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.

Author: Nalkis Mazulkree
Country: South Sudan
Language: English (Spanish)
Genre: Business
Published (Last): 21 December 2015
Pages: 199
PDF File Size: 8.81 Mb
ePub File Size: 2.62 Mb
ISBN: 755-2-79034-220-9
Downloads: 1544
Price: Free* [*Free Regsitration Required]
Uploader: Faurn

Basic ingredients and combinations were presented in Table 2. Most yams are grown on land after it has been cleared from bush; fallow mulching is often practiced and FYM at the fioscorea of The bulk density value of the sample soaked for 6 h did not differ from that of the control but increased in the sample soaked for 12 h and remained constant thereafter Fig. Yam Virus Project Bulletin, No.

The first named is the most destructive as, after initially feeding on the leaves, the larvae attack the stems, often causing them to break off. Philippine Abstracts, 6 3 Introducing the ‘Chinese’ yam.

The flavour is reported to be inferior to that of most common yams and some are bitter. I A-HPP. The Chinese yam as a commercial proposition.

rumetorum The tubers are the swollen ends of stolons arising from the crown of the plant; each stolon bears only one tuber. Modificaciones qucas durante la conservacie ras y tubulos. Harvesting and handling Harvesting is normally done manually by forking, though owing to the size and irregular shape of the tubers of many cultivars damage is often high, in the order of per cent of the tubers.


Potentials of Trifoliate Yam (Dioscorea dumetorum) in Noodles Production

Select your language of interest to view the total content in your interested language. Meloidogyne incognita and Pratylenchus coffeae have been implicated. The dikscorea is likely a product of the Maillard reaction between reducing sugars and proteins [ 38 ]. Some varieties gave high yields of both bulbils and tubers, eg Damaged tubers could result in loss of nutrients Adeyeye and Otokiti, It is important to use scale-free planting material; this, together with the dusting recommended above, should provide adequate control.

A mosaic disease of the yam Dioscorea rotundata in Puerto Rico. Comparative quality assessment of flour from sun-dried and heated air-dried green banana Musa sapientum and plantain Musa paradisiacal. In recent years it has received intensive study in Guadeloupe. Rica ; Negro yam W. It has already been noted that many species may be stored by leaving them unharvested during part, at least, of the dry season. Nitrogen appears to be especially important in Ghana 67 kg nitrogen applied after tuber reserves were exhausted gave a 22 per cent increase in yield; phosphorus gave a small response but potassium nonebut fertiliser requirements vary from place to place.


There are some 60 species that have been used for food, but most are of little importance; the above with the exception of D.

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

The tubers may be single or form a cluster. Tropical Agriculture, Trinidad, 54, African bitter or cluster yam. Botanical name Dioscorea spp. Incidence of virus symptoms in yam Dioscorea sp.

Pests and diseases The yam nematode, Scutellonema bradys, and the root knot nematode, Meloidogyne sp. Termite damage and crop loss studies in Nigeria-Pre-harvest dumteorum to yams due to termites and other soil pests.

Cultivation conditions A warm tropical climate is required, but while D. Rainfall-although generally considered drought resistant, yams require adequate moisture throughout their growing period and there is a positive correlation between high and regular rainfall, vine growth and tuber yield.

Dioscorea dumetorum

Journal of Agriculture of the University of Puerto Rico, 50, Correlations among greater yam Dioscorea alata cultivars. The suspension was stirred just sufficiently and uniformly avoiding excessive speed since it might cause fragmentation of the starch granules. Soil-good drainage is essential and for optimum yields a deep well-drained sandy loam is required.

In addition, several Dioscorea spp.