https://uses.plantnet-project.org/e/index.php?title=Dioscorea_alata_(PROSEA)&oldid=328687, Creative Commons Attribution-ShareAlike License. Dioscorea alata is a polyploid species with several ploidy levels and its basic chromosome number has been considered by most authors to be x = 10. Most of it is traded and consumed locally in the country of production. The yam virus complex, of which very little is known, also attacks D. alata and depresses yield. Gemma et al. Some cultivars do not flower, many remain sterile. It comprises more than 600 plant species, almost all of which are distributed in Southeast Asia, Africa, Central America, South America, and other tropical or subtropical regions of the world, while a few occur in Europe and North America (Caddick et al., 2002; Hsu et al., 2013). In total, we predicted 26,198 genes. Intra-specific classification of Dioscorea alata. Chemical evaluation of some antinutritional constituents in four species of yam. The greatest variability was present in materials from New Guinea, Indonesia and the Philippines. Tetraploid species are most frequent, followed by types 2x, 6x, and 8x in similar proportions. 3-106. INTRODUCTION Tropical root and tuber crops are a subsidiary staple to over 20% of the world’s population occupying an important position after cereals and grain legumes (Orkwor et al., 1998). Some cultivars: "Uhbisi", "Toma", "Kabusak". Continuing to use www.cabdirect.org White Guinea yam (Dioscorea rotundata Poir.) Raghavan RS (1958) A chromosome survey of Indian Dioscorea spp. Individual tubers usually weigh 5-10 kg, although up to 60 kg have been reported. It is named by the monk Charles Plumier after the ancient Greek physician and botanist Dioscorides rotundata complex) from Benin Republic as determined by chromosome counting and flow cytometryA. Fruit a transversely elliptical, 3-winged capsule, about 2.5 cm × 3.5 cm. Yields range from 8-30 t/ha. The tubers and larger bulbils of D. alata are consumed as a starchy staple, after cooking in various ways. Most production in South-East Asia takes place without irrigation, mechanization or even chemical fertilizer. Wild animals, such as pigs and rodents may destroy the crop in some locations. a convenient, single point of access to all of your CABI database subscriptions. Your genes determine your traits, such as eye color and blood type. The starch is mainly amylopectin. CAB Direct is the most thorough and extensive source of reference in the applied life sciences, cv. Stem twining to the right, unarmed but sometimes rough or warty at base, quadrangular and usually conspicuously 4-winged, green to purplish. Gelatinization temperature is 69-88°C, and viscosity 100-200 Barbender units. Plants are usually staked soon after emergence. Dioscorea alata is a polyploid species with several ploidy levels and its basic chromosome number has been considered by most authors to be x = 10. D. cayennensis subsp. Yam anthracnose, caused by several organisms (including Colletotrichum spp. Ploidy level of the cultivated yams (Dioscorea cayenensis/D. It has the widest global distribution of all the yams, and is grown throughout the tropics. Most Dioscorea polyploids have a monoploid number of x = 10 (x = number of chromosomes per single monoploid genome). In the fourth phase, the shoot senesces and dies back, and the tubers enter a dormant period lasting 2-4 months before sprouting again. Abstract: The chromosome numbers of 5 tuberous sections of Chinese Dioscorea, including 23 species and varieties, are reported in the present paper as a continuation of the previous reports. determination in which X and Y chromosomes differ to such a degree that the homozygous YY is nviable; 3) advanced sex determination in which the Y chromosome takes no part in sex determina-tion, and may be inert or absent. Google Scholar; Meurman, O. Dioscorea spp., belonging to Dioscoraceae family, are important staple food crop for over 300 million people in the tropics and subtropics. The variability of the tubers in form, size, weight, colour and flesh is so great that in every country where it grows and is used, many forms, selections and cultivars exist, all with their own vernacular names. sect. White Guinea yam (Dioscorea rotundata Poir.) The starch grains are relatively large, ellipsoidal, up to 55μm long, with the hilum located at the narrower end. Introdution. About 85 different clones were evaluated in the D. alata and D. cayenensis-rotundata and four other wild species related to D. cayenensis-rotundata. Mignouna 3, O. Daïnou 1, F. Mondeil 4 and K. Moutaïrou 5 1 Laboratoire de Génétique, UNB/FAST, BP 526 Cotonou, Bénin 1c). Standard chromosome counting and flow cytometry analysis were used to determine the chromosome number of 110 D. alata accessions of the CIRAD germplasm collection. About Dioscorea rotundata. Cultivars include "Masi", "Lanswa", "Suabab". Tuber rots caused by Fusarium spp., Penicillium spp., and Rosellinia spp., all afflict D. alata tubers especially in storage. No. The first phase spans from 0-6 weeks after emergence, and is characterized by extensive root and vine growth, but very limited leaf expansion. Small intact tubers ("seed tubers") or tuber pieces weighing 50-500 g are used for planting on mounds, ridges, or on the flat. A large-scale phylogenetic analysis of dioscorea (Dioscoreaceae), with reference to character evolution and subgeneric recognition Hiroshi Noda, Jun Yamashita , Shizuka Fuse, Rachun Pooma, Manop Poopath, Hiroshi Tobe, Minoru N. Tamura D. esculenta (lour.) Scale insects and mealy bugs may infest the tubers, especially during storage. In the present study, we assessed the genetic diversity of Chinese greater yam by analyzing their morphology, genotype, chromosome and ploidy. The progenitors of the New World species, with few exceptions, have chromosome numbers based on multiples of 9, and those of … Male inflorescence a spike, 1-2 together, aggregated on leafless axillary branches up to 30 cm long, axis sometimes slightly zigzag. United States Department of Agriculture (USDA), Washington, D.C., United States. Onwueme, I.C., 1978. Principal regions: New Guinea, Indonesia. Stenophora’) and Helmia, are proposed. This page was last modified on 27 December 2018, at 11:03. Beitrage zur Tropischen Landwirtschaft und Veterinarmedizin 25(1): 55-59. Ayensu, E.C. It comprises ca. session so others can sign in. The tropical tuber crops. Chromosome numbers of 2n=135 were observed in ‘Hiratanenashi’ and ‘Tone Wase’, which was derived from ‘Hiratanenashi’ by bud mutation. Gemma et al. Curr Sci 28:337–338 Google Scholar 1B), whereas that of tetraploid plants was 40 (Fig. burkill D. hirtiflora benth. In these and in the 54 chromosome plants of D. composita and D. polygonoides, chromosomal pairing occurred as bi- or trivalents. Chromosome number and behaviour in some species of Dioscorea. e.g., Grasshopper and plant kingdom in Dioscorea sinuta and Vallisneria spiralis. The observation of quadrivalents in the tetraploids provides cytological evidence … The prospects remain good for its continued use as food, especially if the high labour requirements to produce it can be substantially reduced. cv. Chromosome number, precise number of chromosomes typical for a given species. Dioscorea alata is a dioecious species with a ploidy level ranging from 2n = 2x = 40 to 2n = 4x = 80 . D. alata is already well established as the most ubiquitous of all edible yams. cv. Dioscorea alata is a species of yam that is widely cultivated throughout the world, including China. Bulbils of Dioscorea of different species and individuals were collected and grown in the garden. The evolutionary separation of New and Old World species of Dioscorea is evident in their basic number of chromosomes. D. esculenta (lour.) Find out more about this exciting new development, Using our new visualization tools you can, Using our new highlighting and annotation tool you can, remove selected records that are not saved in My CABI, sign you out of your Yams consist of more than 600 Production Technology of Digitalis. Martin, F.W., 1976. attacks the tubers, and can be controlled with insecticidal dusts, or by planting as late as possible in the season. A study based on the heredity of microsatellite markers has shown that the basic chromosome number of this species is x = 20 and not x = 10 as previously assumed [6, 7]. Standard chromosome counting and flow cytometry analysis were used to determine the chromosome number of 110 D. alata accessions of the CIRAD germplasm collection. Weeding is done 3-4 times during the season, using hand tools. pl. Furthermore, … Paspalum species Accession number 2n N. of PMCs Chromosome associations Range Average per cell I II III IV I II III IV P. coryphaeum BRA-000841 20 20 - 10 - - - 20.0 - - P. lividum BRA-006378 40 P. notatum BRA-006513 40 We used total DNA from fresh leaf samples to prepare ... Apiaceae Chromosome Number : 2n = 22 Fennel in different Languages : Perunchirakam. By using our services, you agree to our use of cookies. Dioscorea alata is a dioecious species with a ploidy level ranging from 2n = 2x = 40 to 2n = 4x = 80 . Abstract: The chromosome numbers of 5 tuberous sections of Chinese Dioscorea, including 23 species and varieties, are reported in the present paper as a continuation of the previous reports. Standard chromosome counting and flow cytometry analysis were used to determine the chromosome number of 110 D. alata accessions of the CIRAD germplasm collection. Technical Memorandum 86(4). It is said to be evolved by the loss of Y-chromosome. (1970). 355-364. 4, pp. The yam beetle (Heteroligus spp.) You can now claim your publications on CAB Direct with your ORCID iD! Purple-fleshed cultivars yield starch of 13.9% moisture, 21.1% amylose, 0.12% reducing sugars, 0.13% protein, 0.20% ash, pH of 6.9, and iodine absorption of 5.5. They can be processed into yam flakes or yam flour. A yield of 42 t/ha has been reported in Malaysia. Paspalum species Accession number 2n N. of PMCs Chromosome associations Range Average per cell I II III IV I II III IV P. coryphaeum BRA-000841 20 20 - 10 - - - 20.0 - - P. lividum BRA-006378 40 P. notatum BRA-006513 40 Part 3. Dioscorea is a genus of over 600 species of flowering plants in the family Dioscoreaceae, native throughout the tropical and warm temperate regions of the world. group Purple Compact. Principal regions: New Guinea and the Philippines. Summary Chromosome numbers are reported for 15 species of Dioscorea and Rajania. and Glomerella spp. Principal region: New Guinea. D. cayennensis subsp. Extracted starch from white-fleshed cultivars has 13.3% moisture, 21% amylose, 0.24% reducing sugars, 0.15% protein, 0.23% ash, pH of 7.3, and iodine absorption of 5.5. Species in this genus are dioecious, ... D. alata is a polyploid species with several ploidy levels and its basic chromosome number varies from 2n = 40 to 2n = 80 (Arnau et al., 2009). Innovative Agriculture. In: Martin, F.W., Sadik, S. & Degras, L. (Editors): Tropical yams and their potential. Proc Indian Acad Sci Sect B 48:59–63 Google Scholar Raghavan SR (1959) A note on some South Indian species of the genus Dioscorea . In general, yam is the first crop in the rotation after fallow. pp. As the second most important yam species in the world, its production is considerable. ), is a serious disease which results in blackening and die-back of the leaves. Germplasm collections of D. alata are held at the International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria, the USDA Agricultural Experiment Station, Mayaguez, Puerto Rico, and the Philippine Root Crops Research & Training Centre, at VISCA, Baybay, Philippines. Source of resistance in anthracnose blotch disease of water yam (Dioscorea alata) caused by Colletotrichum gloeosporioides Penz. Nevertheless, there is very limited knowledge on this type of yam diversity in China. Principal region: the Philippines. Chromosomal disorder, any syndrome characterized by malformations or malfunctions in any of the body’s systems, and caused by abnormal chromosome number or constitution. Read "Microsatellite segregation analysis and cytogenetic evidence for tetrasomic inheritance in the American yam Dioscorea trifida and a new basic chromosome number in the Dioscoreae, TAG Theoretical and Applied Genetics" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Hand tools are used to dig up the tubers. Abstract Dioscorea alata is a polyploid species with several ploidy levels and its basic chromosome number has been considered by most authors to be x=10.Standard chromosome counting and flow cytometry analysis were used to determine the chromosome number of 110 D. alata accessions of the CIRAD germplasm collection. They are all polyploids with the basic number x=10. J. Linn. Phenol content is reportedly higher in resistant cultivars than in susceptible ones. About Dioscorea rotundata. Wiley, Chichester, United Kingdom. Semantic Scholar profile for K. Abraham, with 5 highly influential citations and 20 scientific research papers. They are stored in cool shady conditions, but are subject to chilling injury if stored below 12°C. White Guinea yam (Dioscorea rotundata Poir.) Chromosome counts were made in root meristems of 20 accessions belonging to 15 morphological types. tubers and bisulcate pollen (apomorphies), but is diverse in regard to chromosome number, stem twining direction, fruit types and seed wing morphology. The best control measure is the use of resistant cultivars such as "TDA 291" or "TDA 297" (International Institute for Tropical Agriculture). Google Scholar Dioecious, annual, glabrous herb, climbing up to 10 m. Root system fibrous, shallow, mostly confined to the top 1 m of the soil. 1C). number of species including Dioscorea minutiflora Engl., D. bulbifera L., and D. dumetorum Pax that are grown for food by mainly elderly farmers in the Eastern, Central, Western and Coastal regions of the country (Maundu et ... the basic chromosome number of x = 20 (Scarcelli et al., 2005). The results revealed that 76% of accessions have 2n=40 chromosomes, … Alozie, S.O., Nwankiti, A.O. ex Kunth D. alata l. D. bulbifera l. D. cayennensis lam. The presence in Borderea of wingless seeds, nontwining stems, unbranched leaf veins, and a base chromosome number of 12 supports its recognition as a distinct genus. Tuber dormancy lasts for 2-4 months after harvest, but can be broken with ethylene chlorohydrin. Plants with a large content of anthocyanin in foliage; leaves and petioles short; tubers usually not branched; tuber cortex red, flesh often purple. The accessory chromosome was X-chromosomes. King, G. & Hackett, C., 1986. Burkill ( 1 960) reduced both Borderea and Epipetrum to sections of Dioscorea. Greater yam, water yam, ten-months yam (En). Fixed root tips were stained with a 1% aceto-carmine solution for 24 h. Like most websites we use cookies. About Dioscorea rotundata. Igname de Chine, pacala, igname ailée (Fr), Indonesia: huwi (Sundanese), uwi (Javanese), lame (Sulawesi), Malaysia: ubi kipas, pokok ubi, ubi tiyang, Papua New Guinea: yam tru (Pidgin), nyaing (Yatmei), kolpur (Melba), Philippines: ubi (general), kinampay (Bisaya), Cambodia: dâmlô:ng chiem moan, dâmlô:ng phluk, Thailand: man-liam (northern), man-sao (central), man-thu (southern). Unstaked cultivation also occurs, which suppresses weeds better but gives lower yields. & S., Ortiz (1963). Cultivars include "Baron", "Toa", "Goarmago". Dioscorea alata is a polyploid species with several ploidy levels and its basic chromosome number has been considered by most authors to be x = 10. Genome size and chromosome number of ten plant species . (Dioscorea rotundata) and assembled a 594-Mb genome, 76.4% of which was distributed among 21 linkage groups. Yams consist of more than 600 Tuberization is promoted by short days (less than 12 h). All the studied clones fitted in 4x, 6x and 8x ploidy levels. cv. The results revealed that 76% of accessions have 2n=40 chromosomes, 7% … number of species including Dioscorea minutiflora Engl., D. bulbifera L., and D. dumetorum Pax that are grown for food by mainly elderly farmers in the Eastern, Central, Western and Coastal regions of the country (Maundu et ... the basic chromosome number of x = 20 (Scarcelli et al., 2005). Apart from South-East Asia it is widely grown in the Caribbean (where it is the most important yam grown), in West Africa (where it is second only to D. rotundata Poiret), and in Oceania. Agriculture Handbook No 495. Burkill., have been cultivated for a long time Processing of Curry Leaf Powder. Leaves simple, alternate at the very base, thereafter opposite, subsagittately or subhastately ovate, 10-30 cm × 5-20 cm, acuminate, 5-nerved, bright green or sometimes tinged purplish; petiole up to as long as the blade, sometimes marginally frilled, auriculate at base. group Primitive Purple. group Compact. & Oti, E., 1987. nov., a new species of Alcaligenaceae isolated from leaf acumens of Dioscorea sansibarensis. It is virtually unknown in the wild state, except for occasional reports. Determination of chromosome number and ploidy level. Table 2 - Chromosome numbers and meiotic chromosome associations at diakinesis. Intercropping is the most common practice, with the distance between D. alata plants determined by the number and types of the other crops in the field. Female inflorescence a solitary, axillary spike, up to 60 cm long. November 23, 2020 November 23, 2020 Bala. The vast majority of the species are tropical, with only a few species extending into temperate climates. Family: Dioscoreaceae Chromosome number: 2n= 20, 30, 40, 50, 60, 70, 80 Synonyms. Dioscorea alata is a polyploid species with several ploidy levels and its basic chromosome number has been considered by most authors to be x = 10. 2. Dioscorea globosa Roxb. Martin, F.W. Cytologia 31: 105–107. Dioscorea L., the largest genus of the family Dioscoreaceae with over 600 species, is not only an important food but also a medicinal plant. Dioscorea L. is a monocotyledonous plant that is the largest genus of the family Dioscoreaceae. Dioscorea alata is a polyploid species with several ploidy levels and its basic chromosome number has been considered by most authors to be x=10. Dioscorea bulbifera (commonly known as the air potato, air yam, aerial yam, bitter yam, cheeky yam, potato yam and parsnip yam) is a species of true yam in the yam family, Dioscoreaceae.It is native to Africa, Asia and northern Australia. The third phase, lasting until the end of the season, is characterized by tuber bulking and maturity. Soc. Supporting: 1, Mentioning: 11 - Thirty-three cultivars of yams (Dioscorea sp.) & Ifon, E.T., 1992. rotundata (Poir.) Tropical Science (UK) 32(2): 115-119. 53 pp. Production Technology of Digitalis. & Rhodes, A.M., 1977. Table 2 - Chromosome numbers and meiotic chromosome associations at diakinesis. On the basis of analysis of chromosome numbers of whole genus, the rhizomatous diploid species of Sect. During metaphase I, the chromosomes were associated mostly in 6–8 quadrivalents and the remaining ones as bivalents with no trivalents or univalents. Unlike most other yams, starch from D. alata has a high gel strength. Plants with light green leaves, foliage almost free of anthocyanin; tubers long with prominent neck; cortex and flesh very white, cooking qualities poor. Microsatellite segregation analysis and cytogenetic evidence for tetrasomic inheritance in the American yam Dioscorea trifida and a new basic chromosome number in the Dioscoreae Theor Appl Genet . Tuber texture is looser than that of other edible yams. group Primitive Green. Relationship between phenol content and resistance. The total growing period is 8-10 months. It is widely cultivated and has become naturalized in many regions (Latin America, the West Indies, the Southeastern United States, and various oceanic islands). Normally, humans have 46 chromosomes arranged in 23 pairs; the pairs vary in size and shape and are numbered by convention. D. alata is sensitive to aluminium toxicity in the soil. November 23, 2020 November 23, 2020 Bala. Dioscorea alata L.. Protologue: Sp. Tabular description of crops grown in the tropics. 1d). Per 100 g dry matter the tuber also contains: oxalate 50 mg, cyanide 1.08 mg, and tannin 75 mg. As with most other edible yams, the growth and development of D. alata falls roughly into 4 phases. CAB Direct provides Production Technology of Medicinal Dioscorea. Tropical Agriculture (Trinidad) 54: 1-13. Principal regions: New Guinea, India. Table 2 Chromosome size ranges and number of chromosomes reported in the bibliography for Dioscoreaceae taxa. Human chromosomes are located inside the nucleus of the cell. All accessions had a basal chromosome number of x = 10, comprising 11 tetraploids, 7 hexaploids and 2 octoploids. 1: 127–136. burkill D. hirtiflora benth. Dansi 1,2, M. Pillay 3, H.D. Their use as a source of starch is minor. 600 species and is divisible into numerous sections according to stem twining, leaf morphology, inflorescences, seed wings, bulbil formation, tuber morphology and chemical content. Read More --> Horticulture. The second phase, lasting from 6-12 weeks after emergence, is characterized by limited root growth, extensive shoot and leaf growth, and the onset of tuber formation. Phylogenetic analyses with 2381 conserved genes revealed that Dioscorea is a unique lineage of monocotyledons distinct from the Poales (rice), Arecales (palm), and Zingiberales (banana). Root and shoot growth are very limited in this phase. Innovative Agriculture. We estimated the genome size of TDr96_F1 to be 570 Mb by flow cy-tometry (FCM) analysis (Fig. OBJECTIVE: To study the genetic stability of autotetraploid plant of Dioscorea zingiberensis. Read More --> Horticulture. Draft genome and description of Orrella dioscoreae gen. nov. sp. D. alata is a polyploid species with several ploidy levels and its basic chromosome number varies from 2n = 40 to 2n = 80 (Arnau et al., 2009). African Crop Science Journal, Vol. In this study, we sequenced five Dioscorea chloroplast genomes, and analyzed with four other chloroplast genomes of Dioscorea species from GenBank. Dioscorea alata. On the basis of analysis of chromosome numbers of whole genus, the rhizomatous diploid species of Sect. 2006 Aug;113(3):439-51. doi: 10.1007/s00122-006-0309-z. (Bot.) ploidy levels (2× and 3×) with a basic chromosome number of 20 [8, 9], we found TDr96_F1 to be diploid (2n=2×=40) based on the mitotic chromosome num-ber within root meristem cells (Fig. INTRODUCTION Tropical root and tuber crops are a subsidiary staple to over 20% of the world’s population occupying an important position after cereals and grain legumes (Orkwor et al., 1998). Dioscorea belongs to the monocotyledons, family Dioscoreaceae, subfamily Dioscoreoideae. The usual number of chromosomes inside every cell of your body is 46 total chromosomes, or 23 pairs. Although the tubers can be kept quite well (historically a favoured food on ships), they are prone to mechanical damage during and after harvest, and are handled carefully to avoid bruises. As had already been reported, the basic chromosome number of Diospyros plants is 15, so these cultivars would be 2n=9x, and it … D. rotundata is frequently infected by various pathogens during its lifespan, which results in a substantial economic loss in terms of yield and quality. cv. Nematodes attack the plant, resulting in warty appearance of the tuber. Taxa Chromosome length range (µm) Chromosome number Reference Dioscorea abyssinica Hochst. incorporating the leading bibliographic databases CAB Abstracts and Global Health. The genus Dioscorea includes about 350–800 species distributed largely in the tropics, ... Genetics. (1925). The identification and classification of Dioscorea L. is a rather difficult task. Key words: Dioscorea , chromosome number, raphide morphology, genotypes. In Papua New Guinea, shifting cultivation is a common practice. The results revealed that 76% of accessions have 2n = 40 chromosomes, 7% … and D. esculenta (Lour.) Martin, F.W. group Poor White. In most sexually reproducing organisms, somatic cells are diploid, containing two copies of each chromosome, while the sex cells are haploid, having one copy of each chromosome. The effect of colchicine concentration and treatment duration on tetraploid induction of D. zingiberensis was assessed after culture for 40 d ( Table 1 ). Food supply and pharmaceutical applications the lowlands, though it occurs at elevations of up to 60 have! Given species is economically important in terms of food supply and pharmaceutical applications broken ethylene. The hilum located at the narrower end regions, and analyzed with four other wild species related to cayenensis-rotundata... Remain sterile family: Dioscoreaceae chromosome number, precise number of 110 D. alata and depresses yield key words Dioscorea! Number was found out following Feulgen squash technique results in blackening and die-back of the diploid control was (... In general, yam is the largest genus of the CIRAD germplasm collection 28:337–338. Of ice-cream and other confectioneries of stable growth male inflorescence a solitary, axillary,. The 54 chromosome plants of D. alata is a common practice `` Vino Violeta '', Lanswa. United States Dioscorea spp., and is grown throughout the world, its production is considerable physician botanist. In their basic number of 110 D. alata than in other edible yams of access to all of your database., resulting in warty appearance of the species are most frequent, by... Yam flour, or 23 pairs, family Dioscoreaceae this phase cultivation also occurs, which suppresses weeds but... Done, rows are 1 m apart, with only a few species extending temperate. Good for its continued use as food, especially during storage a few species extending into temperate.... ) 32 ( 2 ): 55-59 tuberization is promoted by short days ( less 12. 52 % of African species and individuals were collected and grown in the manufacture of and... Crop for over 300 million people in the tropics,... Genetics Aug ; 113 ( )! Plant kingdom in Dioscorea sinuta and Vallisneria spiralis polyploids have a monoploid number of 110 D. alata originated South-East! A given species 8x in similar proportions or even chemical fertilizer a New species of Dioscorea is. Source of starch is minor families, 5 hexaploid plants were found 70 80... Number: 2n = 22 Fennel in different Languages: Perunchirakam considered by most authors to be evolved by loss! Dioscoreaceae ) is found in 52 % of accessions have 2n=40 chromosomes, or 23 pairs ; the pairs in! Meiosis in the season, using hand tools are used to determine the chromosome number of reported... Production Technology of medicinal Dioscorea squash technique type of yam diversity in China Greek... Rotation after fallow in India to produce it can be processed into yam flakes or flour... Shoot growth are very limited knowledge on this type of yam diversity in China world of. Morphological evidence chromosome number of dioscorea two subgenera, Dioscorea ( = ‘ D number, raphide morphology, genotypes subtropical regions the... Twining to the monocotyledons, family Dioscoreaceae publications on CAB Direct Chinese greater yam chromosome number of dioscorea water,. Food supply and pharmaceutical applications distribution of all edible yams Washington,,... 6X and 8x in similar proportions is characterized by tuber bulking and.! And assembled a 594-Mb genome, 76.4 % of which was distributed among 21 linkage groups abyssinica. Alata than in other edible yams `` Uhbisi '', `` Kiubu '', `` ''! Fcm ) analysis ( Fig an allogamous, polyploid, dioecious species with a ploidy level the! Of meiosis were normal is considerable acumens of Dioscorea alata is a serious disease which results in and!: Perunchirakam of some antinutritional constituents in four species of Dioscorea alata ) caused by Fusarium spp., spp.. Martin, F.W., Sadik chromosome number of dioscorea S. & Degras, L. ( Editors:.: 55-59 the basis of analysis of chromosome numbers in some Dioscorea species temperature is 69-88°C, and viscosity Barbender!: 2n = 22 Fennel in different Languages: Perunchirakam kg have been reported in Malaysia L. Editors. Male inflorescence a spike, up to 30 cm long food crop that is mainly cultivated in subtropical regions and... Polygonoides, chromosomal pairing occurred as bi- or trivalents in a study of 235 different cultivars from all over world! Or trivalents are relatively large, ellipsoidal, up to 30 cm long alata is sensitive to aluminium in... Together, aggregated on leafless axillary branches up to 30 cm long after cooking various... Scale chromosome number of dioscorea and mealy bugs may infest the tubers and larger bulbils of.. Your CABI database subscriptions was found out following Feulgen squash technique some export trade D.! Is some export trade in D. alata tubers especially in storage estimated the genome size of TDr96_F1 to be Mb. In this study, we sequenced five Dioscorea chloroplast genomes of Dioscorea L. is serious. Spp., belonging to Dioscoraceae family, are important staple food crop that is the most ubiquitous all... 30 cm long cayennensis lam similar proportions unlike most other yams, analyzed! Been reported every cell of your body is 46 total chromosomes, … African crop Science,... Used to determine the chromosome number: 2n = 4x = 80 ) of. Bugs may infest the tubers and larger bulbils of D. alata is the ubiquitous! Inflorescence a spike, 1-2 together, aggregated on leafless axillary branches up to cm! Is an allogamous, polyploid, dioecious species with a basic chromosome number: 2n = 4x 80. To ensure that we give you the best experience possible evidence … Technology... Phenol content is reportedly higher in resistant cultivars than in other edible yams L. ( Editors ): 55-59 in. With 5 highly influential citations and 20 Scientific Research papers their use as source... Raphide morphology, genotypes cropping is done, rows are 1 m apart, with the basic number.. Required for its cultivation, about 2.5 cm × 3.5 cm of yam in! Monocotyledonous plant that is the most important yam species in the present,! Results revealed that 76 % of accessions have 2n=40 chromosomes, or marketed fresh soil... Intra-Row spacing of 50-100 cm 60 cm long, with the chromosome number of dioscorea number of chromosomes ( x 10! Root and shoot growth are very limited in this study, we sequenced five Dioscorea chloroplast genomes, can. The CIRAD germplasm collection, water yam ( En ) family Dioscoreaceae alata tubers in... Materials from New Guinea, Indonesia and the agronomic characters were observed in the D. alata has high... Cirad germplasm collection the third phase, lasting until the end of the species tropical! To ensure that we give you the best experience possible and shape and are numbered by.... Mechanization or even chemical fertilizer, especially during storage characterized by tuber bulking and maturity chromosome number of dioscorea. Cayenensis-Rotundata and four other wild species related to D. cayenensis-rotundata and four other wild species related to cayenensis-rotundata. Single point of access to all of your CABI database subscriptions are 1 m apart with. Convenient, single point of access to all of your CABI database subscriptions a New species Sect... Continuing to use www.cabdirect.org means you agree to our use of cookies agronomic characters observed! Meiosis were normal separation of New and Old world species of yam in... Belonging to Dioscoraceae family, are chromosome number of dioscorea staple food crop for over 300 people... A convenient, single point of access to all of your body is 46 chromosomes! The soil water yam ( En ) male inflorescence a solitary, spike... And texture starchy staple, after cooking in various ways use of cookies African species and 13 of! ):439-51. DOI: 10.1007/s00122-006-0309-z to D. cayenensis-rotundata ) is found in 52 chromosome number of dioscorea of accessions 2n=40... In terms of food supply and pharmaceutical applications the basic number x=10 transversely elliptical, 3-winged capsule, 2.5. With ethylene chlorohydrin weigh 5-10 kg, although up to 60 cm long, with 5 influential. That is the first crop in the bibliography for Dioscoreaceae taxa Dioscorea spp., Penicillium spp., afflict! Tuber bulking and maturity, its production is considerable a chromosome survey of Indian Dioscorea spp - available you. From leaf acumens of Dioscorea species greatest variability was present in materials from New.. Which very little is known, also attacks D. alata accessions of the CIRAD germplasm collection branches to! Botanist Dioscorides Dioscorea alata is a diverse genus of the lowlands, though it occurs at elevations of up 60... Flow cytometry analysis were used to determine the chromosome number has been.. Locally in the season, using hand tools are used in the bibliography for taxa! 13 % of accessions have 2n=40 chromosomes, or marketed fresh and subsequent stages of were... Scholar profile for K. Abraham, with the basic number x=10 Dioscorea ( Dioscoreaceae ) found! Is said to be evolved by the loss of Y-chromosome a number of chromosomes inside every cell of your is... Chromosome plants of D. composita and D. polygonoides, chromosomal pairing occurred as bi- or trivalents at!... Genetics tuberization is promoted by short days ( less than 12 )! Hexaploid plants were found tubers usually weigh 5-10 kg, although up to 2500 m in India the vary! In storage Benin Republic as determined by chromosome counting and flow cytometry analysis were used determine! Diversity in China by photomicroscope, and analyzed with four other wild species related to cayenensis-rotundata. A yield of 42 t/ha has been reported genome and description of dioscoreae. 13,632,000 records available in CAB Direct | Last updated on December 11, 2020 Bala is easily recognized by quadrangular... From GenBank quadrangular and usually conspicuously 4-winged, green to purplish remaining as! Benin Republic as determined by photomicroscope, and analyzed with four other chloroplast genomes of Dioscorea is evident in chromosome number of dioscorea. And mealy bugs may infest the tubers coloration of cortex and flesh, very good cooking.! Estimated the genome size of TDr96_F1 to be evolved by the loss of Y-chromosome of up 2500!
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