DIOSCOREA DUMETORUM PDF

Fulltext – Functional Properties of Bitter Yam (Dioscorea dumetorum) as Influenced by Soaking Prior to Oven-drying. The plant is often purposely grown at spare points on the land as an insurance against famine years, and is also encouraged in hedgerows around a farm and. Notes. BRIEF DESCRIPTION A climbing vine with robust, spiny stems reaching up to m in length. The leaves are trifoliate with ovate leaflets, cm long.

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Trifoliate yam Dioscorea dumetorum is a high yielding but under exploited yam species. This material has been tested in a number of Caribbean islands and has given approximately double the yield obtained when conventional dumettorum yams are planted, and the operation is now commercial.

The skins are thick and dark and the flesh may be white, pink or purplish. The origins and domestication of yams in Africa. Production and trade The major part of the total African production of yams 19 million t is of the D. In the Caribbean, planting in ridges cm high is the usual practice, the seed tubers being placed cm deep, by hand or by machine.

Search Titles Subjects Organizations. Botany The cumetorum of these yams is confused.

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Bitter yam (Dioscorea dumetorum)

Los Ba Laguna, Philippines: Araneta Journal of Agriculture, 14, Introducing the ‘Chinese’ yam. Dioscorra Abstracts, 73, U. Changes in nutrient content with age.

Where the rainy season is less than 8 months it has been found that early planting, up to 3 months before the rains, can give a 30 per cent increase in yield. Table 1 is taken from FAO statistics however, the last year for which FAO published separate figures for yams was The Chinese yam as a commercial proposition.

Annals of Applied Biology, 72, Tropical Agriculture, Trinidad, 42, Prolongation of dormancy by chemical methods is not normally successful but recent experiments have achieved a degree of success using gamma irradiation of sound tubers at a dosage of Handbook of tropical foods Chan, H.

Significant differences is indicated by different letters within the same rom.

Potentials of Trifoliate Yam (Dioscorea dumetorum) in Noodles Production | OMICS International

The genus Dioscorea is divided into a number of taxonomic sections; the important food yams are grouped in the following: The tubers may be single or form a cluster.

Tropical Root and Tuber Crops Tomorrow: Experimental Agriculture, 8, ; Studies on white yam Dioscorea rotundata. Unlike most other yam species, starch from Ddioscorea.

It is claimed that uninjured tubers can be stored for 4 months or longer in well-ventilated conditions under ambient temperatures in the tropics; larger tubers store better than small ones.

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Research Article Open Access. Rico ; me amarillo Sp.

All types of vegetative planting material other than vine cuttings are commonly referred to as setts. Yam flakes-have been prepared in the Caribbean from D. Noodles preparation by supplementations of wheat flour with other food materials have been documented; cassava [ 9 ], matured green banana diioscorea oat beta glucan [ 10 ], green banana [ 11 ], unripe plantain [ 12 ].

The tubers may be single or usually produced in clusters: There were subjected to one-way analysis of cioscorea ANOVAmeans were separated using Duncan multiple range test at 0. Longman Group Ltd, pp.

Dioscorea dumetorum

Bulbils are formed in the leaf axils. The flesh is floury to succulent, crisp, with little fibre and a characteristic bland but rather sweet flavour. Tubers-the fresh weight composition of the tubers has been given as: The Crown Agents for the Colonies, pp. Basic ingredients and combinations were presented in Table 2. Bulk density is a measure of heaviness of a flour sample.

Le Dioscorea esculenta Burkill, en Cd’Ivoire. When cultivation is practiced propagation is often by planting pieces of tuber in prepared mounds see Yam.