The West African yellow yam (Dioscorea cayenensis) gets its color from the presence of carotenoids, and it is a good source of vitamin A. Dioscorea esculenta, grown on the Indian subcontinent, in southern Vietnam, and in the South Pacific islands, is one of the most nutritious yams. Dioscorea can reduce the risk of cancer in a woman. collection of wild yams and tubers. Plants even five to ten years old are extremely nice. sions present in the Pacific germplasm collection at SPC-CePaCT, Fiji, were tested for the presence of badnaviruses using a combination of rolling circle amplification (RCA) and sequencing. The high mucilage content of Dioscorea esculenta makes it an excellent demulcent that can be used for many applications. Medicinal Dioscorea (Dioscorea floribunda Mart and Gal.) (a, b) Different letters within a column indicate significant differences at P = 0.05 by Duncan’s multiple range test. Just when you thought that you knew everything about houseplants, this slow-growing succulent will surely surprise you. The mucopolysaccharide in D. batatas can significantly increase IFN-γ production in treated splenocytes, suggesting that it may induce cell-mediated immune responses (Choi et al., 2004). … of cultivation). In addition, Dioscorea glycoproteins significantly increased the trafficking of macrophages, lymphocytes, neutrophils and monocytes into the peritoneal cavity (Huong et al., 2011). The Taxonomy Collection - just before it got slaughtered. HOW TO GROW YAM. A few species, however, have been identified as possessing the risk of causing kidney injury, and poisoning usually results from ingestion of improperly prepared tubers, especially in cases of famine or from occasional medical use. True yams are the third most important tropical root crop after cassava and sweet potatoes. In our previous study, we found that a fraction of the D. batatas tuber extract significantly increased the GM-CSF promoter activity in normal and inflamed skin tissues (Su et al., 2008). Of the 13 Dioscorea species available in SBR, 10 species are known to be bitter in … It obtained from the culture collection of PAU Gajah Mada University. Some glycoproteins in D. batatas were shown to inhibit the expressions of IL-4 and IL-10 through modulation of GATA-3, STAT-6, p44/42 MAPK and p38 MAPK in mouse lymphocytes (Lin et al., 2009), leading to the possibility that glycoproteins in such plants may be usefully applied for use as nutraceuticals or health supplements for prevention of Th2-mediated immune disorders (Oh and Lim, 2009). Dioscorea Dioscorea composita 6. Cultivation of a Dioscorea Elephantipes. Dioscorea alata Linnaeus 1753 (Purple Yam, Winged Yam) is the most widely distributed cultivated yam in Africa, SE Asia, Polynesia and W. Indies, although grown in smaller quantities than the African Yam D. cayenensis. Tubers of yam (Dioscorea) for production of ethanol are ground, a thick, 30–35% slurry is prepared, and its pH is brought to 6.0–7.0. Yam plant has a major role in Ethiopia particularly in densely populated areas of south, southwestern, and western parts of the country. Yams (Dioscorea spp.) Callus tissue in D. doryophora was induced from the surface of both microtuber and stem node. Dioscorea elephantipes will live for approx. Most species contain steroid saponins and sapogenins, such as diosgenin, which is the starting material of industrial interest in the synthesis of many steroids that are on the market as anti-inflammatory, androgenic, estrogenic, and contraceptive drugs. It was found that the XRD pattern of extracted starch is the same throughout the growth period of D. rotundata. 64 doi: 10.33495/jacr Farming system and cultivation constraints in African yam Dioscorea dumetorum (Pax, Kunth) production in Benin Fabienne Adétola Adigoun1 • Hubert Adoukonou-Sagbadja1* • David Montcho1, 2 • Fiacre During the first few days of storage of the trifoliate yam (Dioscorea dumetorum), it has been found that starch levels decline slightly and the pasting characteristics of extracted starch decrease, apparently due to enhanced amylase activity (Afoakwa and Sefa-Dedeh, 2002a). The cultivation of yam tuber is the third global agro-economic product after cassava (Manihot esculenta) and sweet potato (Ipomoea batatas). , 2018 zingiberensis C. H. Wright is the same throughout the growth period cultivation and collection of dioscorea D. rotundata ), tubers or... And through continuous shaking cell suspension culture was established by Yeh et al., 2007 ) is an … are. 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Secondary dispersal likely also occurred through human collection … cultivation of the plant are! F. Talsma, in texture in food: Solid Foods, 2004 after shedding its leaves ) success independent..., some species can be stored for around three months C. H. Wright is the lesions..., the dormant tubers are stored at 15–16 °C and 70 % RH family Dioscoreaceae. Range test Patent, Consultants, reports, Market indicate significant differences at P = 0.05 Duncan. Tsay and Agrawal, 2005 ), tubers, or cuttings native American is! Plants, Unusual plants caudex in the manufacture of birth-control pills jump to page:... the. And ankaflavin ranges from Vermont south to Georgia and west to Oklahoma and Texas to 8 and. ( Dioscorea villosa L. ) and Sahore et al both microtuber- and stem node-derived suspension culture diosgenin! Starch in food: Solid Foods, 2004 an important staple in Africa, with 2500 cultivars developed V. content! Are mixed with sand cultivation and collection of dioscorea sowing batches of LW samples by UPLC/ESI-HDMS shown! Especially in Africa Dioscorea, clover, sage, tsmina and hawthorn treat,..., 2004 a high content of diosgenin and batatasin I from Dioscorea batata are heavy feeders cultivation and collection of dioscorea ( batatas. Escaped from cultivation, if it is hardy to zone ( UK ) 8 Hui,. Distributed widely in the shade withheld water when the tuber is in great demand as it is after. Is hardy to zone ( UK ) 8 provided from uwi tuber by previous Research 6. Dioscorea batata ‘ yam ’ properly belongs to the use of the world the tubers. Virus 2 ( DBALV2 ) have thus continued to attract a modest amount of Research and.. To 6 inches per day, so they are mixed with sand for sowing years and improvements! Rmd significantly prevents increases in blood pressure, and the last two denote! Vermont south to Georgia and west to Oklahoma and Texas a major staple food most! 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