Dioscorea villosa is one of the species of yam referred to as ‘wild yam’.. Dioscorea villosa has been claimed to alleviate symptoms of menopause, but there is currently no evidence to support this effect.. Dioscorea species, popularly known as Yam worldwide and as Ban Aalu in Odisha, India, is a prime staple medicinal-food substitute for the majority of rural and local people of the state of India. Animal evidence suggests Dioscorea villosa can increase skin thickness after low-dose supplementation. In many of these areas yams are also culturally important. YAM (Dioscorea spp) Yam belongs to the family Dioscoreacae. The Dioscorea genus contains more than 600 species, 14 of which have edible tubers. Abstract. genes, yam. Insects. germplasm with a-d, and e representing accessions of D. alata, and D rotundata, respectively..... 60 Figure 2.4. This study was done to identify yam species collected from major producing areas of the country. In: Proceedings of the 7th triennial symposium of the international society for tropical root crops- Africa branch, Cotonou, Benin, 11–17 October 1988, pp 637–638 Google Scholar Fax: 1-804 524 5186. yam production occurs in the yam belt of West and Nematodes The yam nematode (Scutellonema bradys) and the root-knot nematode (Meloidogyne spp.) The main control for the yam beetle is to dust yam sets with insecticides, such as Aldrin and Mundane, before planting, rodents can also pose a threat to maturing tubers. is a very important staple crop of tropical and subtropical agriculture, especially in Africa. Identifiers. Phone: 1-804 524 5668. INTRODUCTION Yam (Dioscorea spp.) Two-thirds of the worldwide production is grown in West Africa. Latin Names: Dioscorea bulbifera L., Dioscorea alata L., Dioscorea sansibarensis Pax Common Names: air-potato, potato vine, air yam, white yam Stewardship summary. ), farmers depend on this season’s harvest to supply planting material for the following season. Hidehiko Kikuno, h.kikuno@cgiar.org . The Dioscorea spp examined included Dioscorea rotundata (white yam), D.cayenesis (yellow yam) and D.alata (water yam). Click below on a thumbnail map or name for species profiles. Other terms for yam are true yams, greater yam, tropical ... Yams—Dioscorea spp. YAM (Dioscorea spp.) This means that they must set aside 10 to 30% of their yam harvest for planting material. The "yam belt" in West Africa, including Nigeria, Benin, Togo, Ghana and Côte d'Ivoire, accounts for 92% of 72.6 million tons of global yam produ … ), is widely cultivated in tropical regions and serves as food in Central and South America, in Africa, Asia and in the Pacific Islands. Variation in tuber shape among yam (Dioscorea spp.) The term yam extends to all plants of the genus Dioscorea, a name that refers to the Greek physician and botanist Dioscorides. Variation in flesh colour of central cross section of tuber among yam (Dioscorea E-mail: jmignoun@vsu.edu. Robinson (1987) reported that a diet that meets two-third of the RDA (Recommended Dietary Allowance) values is considered to be adequate for an individual. The origin of D. bulbifera is uncertain. was less than that of earlier studies in the tubers oí Dioscorea spp. Yam (Dioscorea spp.) (Dioscorea spp.) Re-defining the yam (Dioscorea spp.) Yam (Dioscorea spp.) tubers of Nepal Plant Foods Hum Nutr. The genus Dioscorea (true yams) is economically important world-wide as a food crop. Native Introduced Native and Introduced. Chrysomelids: Chrysomelids larvae are shiny, black and covered in mucus, and may reach 1 cm. With the purpose of developing bakery products and determining its acceptability, cake, biscuit, pasta, pancake, bread, and pizza were prepared with 0 … Home Crops How To Plant and Grow Yams (Dioscorea spp.) is one of the most economically important crops serving as a staple food for millions of people in tropical and subtropical countries . Mudiope J, Speijer PR, Maslen NR, Adipala E (2001) Pratylenchus, the dominant genus affecting yam (Dioscorea spp.) yams (Dioscorea spp. The Plants Database includes the following 30 species of Dioscorea . This study revealed the insights on chemical components during tuber development and characteristics of alatanins for future selection and cultivation of purple yam tubers. The taxonomy and phylogeny of the local landraces has not been fully studied. SPECIES OF YAM In the picture: botanical illustration of different plants of the genus Dioscorea. Dioscorea spp. Up to 95% of the world’s yams are produced in West Africa (FAO, 2009). Land Preparation of Yam 1. Native to Africa and Asia, yams vary in size from that of a small potato to a record 130 pounds (as of 1999). When first harvested, the dormant tubers are stored at 15–16 °C and 70% RH. Clean yam tubers from vine cuttings. SILVESTRE] P.S. ... from the Lisbon yam to the yellow yam, the potato yam to the purple yam. A study was carried out on the storage rot of yams Dioscorea spp in Keffi and environs, Nasarawa State. Yam (Dioscorea spp.) is a multi-species, polyploid and vegetatively propagated tuber crop that is cultivated widely in the tropics and subtropics. NUTRITIONAL AND ANTINUTRITIONAL EVALUATION OF WILD YAM (Dioscorea spp.) by David The Good June 5, 2019 June 1, 2019. Yam (Dioscorea species) is one of the most important food crops in West Africa. and Nicotiana benthamiana.In extracts of D. cayenensis leaves infectivity was lost after 10 min at 60 d̀C but not 55 d̀C and after dilution to 10 ‐3 but not 10 ‐2.A purification procedure is described. Dioscorea spp. The major disease affecting Dioscorea cayenensis in the Ivory Coast is caused by a virus which was transmitted by mechanical inoculation to some Dioscorea spp. is a monocotyledonous herbaceous vine cultivated for its starchy underground or aerial tubers in the tropics and subtropics. Summary of Invasiveness Top of page. Crops Yams. Yam (Dioscorea spp. is a multi-species tuber crop providing food and income to millions of people worldwide, particularly in Africa (Price et al., 2016). 28 April 2011 13 April 2011 by klopez. Yams are closely related to lilies and grasses. Yam. Cultivated yams are vegetatively propagated while wild yams are sexually propagated and comprise both diploid and polyploid species. Over 90% of world *Corresponding author. also attack yam. 2005 Sep;60(3):129-35. doi: 10.1007/s11130-005-6841-1. Dioscorea bulbifera. Yam (Dioscorea spp.) Dioscorea caucasica -Caucasus Yam Root. When first harvested, the dormant tubers are stored at 15–16 °C and 70% RH. Dioscorea L. – yam Subordinate Taxa. (Arinathan et al, 2009). The main cultivated species is Dioscorea minutiflora Engl. is a multi‐species tuber crop providing food and income to millions of people worldwide, particularly in Africa (Price et al., 2016). To produce yams for eating or marketing, most farmers in the Pacific plant yam setts that weigh 100 to 600 g or more. The calorific value of all the investigated Dioscorea spp. It is an allogamous and polyploid species that reproduces by both sexual and asexual mechanisms. core collection using morphological traits - Volume 16 Issue 3 - Gezahegn Girma, Ranjana Bhattacharjee, Antonio Lopez-Montes, Badara Gueye, Sam Ofodile, Jorge Franco, Michael Abberton ; Yam moth: Pyralid moth worms attack yam tubers in lofts by mining, especially during the first four months of storage. Defoliating caterpillars: Defoliating caterpillars eat the leaf blade and then attack the stems, sometimes causing severe damage. The … Preparation of the land or soil If you have about one hectare of land, you will have to prepare the soil for planting the yam seeds. ), a traditional crop in Kenya has not undergone improvement and little has been done to understand its genetic background. Each seed piece should weigh 4 to 5 ounces. Dioscorea spp., belonging to Dioscoraceae family, are important staple food crop for over 300 million people in the tropics and subtropics. They are mostly grown for their starchy tubers (both cultivated and wild) and for medicinal properties. Of the 13 Dioscorea species available in SBR, 10 species are known to be bitter in … Yam (Dioscorea spp. The “yam belt” in West Africa, including Nigeria, Benin, Togo, Ghana and Côte d’Ivoire, accounts for 92% of 72.6 million tons of global yam production (FAOSTAT 2018). is a tuberous plant of high energy and nutritional value, with great importance for the industry and as a food because of its composition. Yam is considered as the richest source of energy and a good source of carbohydrate along with certain minerals and vitamins. It is a root and tuber crop popularly grown in West Africa . There are over 600 varieties of … 1 thought on “Wild Yam – Dioscorea villosa,D. Among various species of yams, greater yam (dioscorea alata L.), lesser yam (D. esculenta Lour.Burk), white yam (D. rotundata Poir) and some wild yams are of great importance for their edible tubers and medicinal properties. Introduction. 2 Culture Portions of tubers or whole small tubers are used for seed pieces. Dioscorea cayenensis, one of the cultivated tropical species of Dioscorea, is an important staple in Africa, with 2500 cultivars developed.It is a vine mostly known from cultivation, but also reported as escaped in the Panama Canal Zone. Yam (Dioscorea spp.) However, many of the landrace cultivars, including most of the popular varieties, reproduce exclusively by vegetative propagation (planting the tubers). Yam, the tuber of Dioscorea spp., is a very typical agricultural product in China and also a major food staple in many tropical countries (Chen and Lin, 2007, Hsu et al., 2003). Yam is the common name applied to plants of about 500 species of the genus Dioscorea of the Dioscoreaceae family. It is a major source of carbohydrates and nutrient energy for many people in tropical countries. Shajeela1, V. R. Mohan2*, L. Louis Jesudas3 and P. Tresina Soris2 1PG & Research Department of Botany, St. John’s College, Palayamkottai, Tamil Nadu, India. spp” Pingback: Wild Yam (Dioscorea Villosa) – Lauren Kallmeyer – Kentucky herbalist Comments are closed. There are over 600 species of yam, of which only 12 Yam Tubers Source; www.ghananewsagency.org. Bitterness and toxicity in wild yam (Dioscorea spp.) How To Plant and Grow Yams (Dioscorea spp.) in Uganda. Yams (Dioscorea spp) are a staple tuber crop for many of the poorest in West Africa, South East Asia, the Caribbean andOceania. Production of yam seed tubers using vine cuttings and in vitro micropropagation is quick, cost-effective, and results in clean planting material. [EVALUACIÓN DEL VALOR NUTRICIONAL Y FACTORES ANTINUTRICIONALES DE Dioscorea spp. 1. Yam plant has a major role in Ethiopia particularly in densely populated areas of south, southwestern, and western parts of the country. and it is rich in carbohydrates. Authors Megh Raj Bhandari 1 , Jun Kawabata. It grows in a wide range of soils with an altitude range of 1140 to 2200 masl. Species: Dioscorea alata.

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