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dioscorea spp yam

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

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