2 edition of Dioscorea rotundata Poir found in the catalog.
Dioscorea rotundata Poir
Sheila Frances Mathias
Thesis (M.Sc.) - University of Birmingham, Dept of Plant Biology.
Yams and sweet potatoes are two entirely different vegetables belonging to different botanical families. The morphology of each pathogenic fungus was compared with that of the original culture. Except from one work showing an increase of D. Relation between yield and some yield related characters was observed among the genotypes tested. The yam belt of West Africa spans from the humid forest where yam is cultivated for food security to the northern Guinean savanna where yam is also cultivated as a cash crop Ndabalishye, ; Asiedu and Sartie,
Naqvi, S. The results obtained suggests that the presence of carbohydrate, protein and fat is of primary importance for the survival and successful establishment of the pathogens within the tissue of yam. Jr ed New York: Marcel Dekker. Yam cultivation is constrained by many factors.
The yam discs were replaced and inoculation sites smeared with petroleum jelly. Fewer publications analyzed nutrient uptake and distribution during the entire plant growth Irizarry and Rivera, ; Irizarry et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. This book aims to fill the gap by pooling existing knowledge on the subject. The fungi were re-isolated from the inoculated diseased yam tubers and cultured on PDA plates.
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Total carbohydrate content of tubers of D. Also, copper contributes to maintaining healthy hair and eyes and helps regulate thyroid function. Lack of positive Dioscorea rotundata Poir book significant correlation between fresh tuber yield and number of leaves per plant in this study showed that number of leaves per plant should not be considered as a direct indicator or yield component of tuber yield in yam.
A prerequisite to understanding the relationships between soil properties and yam yield will be to install field trials on different soils with different Dioscorea rotundata Poir book of nutrient addition using identical crop management techniques together with sufficient information on weather.
Genome sequencing of the staple food crop white Guinea yam enables the development of a molecular marker for sex determination. Also see the benefits of sweet potatoes.
It aids in ascertaining if improvement in one character would simultaneously result in changes in other characters among yam genotypes in a given environment.
Manganese promotes bone growth and Dioscorea rotundata Poir book bone loss. Fiber adds bulk to stools which encourages bowel movements, relieving constipation and managing hemorrhoids symptoms. The importance of soil fertility for yam was illustrated by Diby et al.
Mycopathologia 2 : — Higher yields of more than This low recovery rate suggests high rates of nutrient losses which need to be quantified. Ravinduram, G. Except in the work done by Kassi et al. Besides being a staple consumed by million people, yam is grown as a cash crop and a medicinal plant Lebot, ; Sangakkara and Frossard, and has a high cultural value for some of the groups growing it Coursey, The decrease in protein and fat contents of the samples is in agreement with the findings of Amusa who reported that the percentage crude protein and fat of freshly processed yam chips were significantly higher than those of the stored ones.
Image credit: Tamiru et al, doi: Improvement of food yam has been possible due to the collaborative efforts of the National Root Crops Institute, Umudike, with the International Institute of Tropical Agriculture, Ibadan both in Nigeria in areas of interspecific hybridization and production of hybrid yam varieties for commercial production [ 20 ].
Official methods of analysis 14th ed. Yield of about Storage and market diseases of yam tubers in South-Western Nigeria. Yams boast a good antioxidant value thanks to their copper and manganese content. Mohammed, S. ISFM is based on the combined use of organic and mineral nutrient sources in conjunction with appropriate crop varieties and adaptations to the local context Vanlauwe et al.
Oladeebo, J. This genus contains approximately species which are primarily distributed in tropical and subtropical regions worldwide. These call for some remarks. The most important species of Dioscorea include Dioscorea rotundata guinea white yamDioscorea cayenensis guinea yellow yamDioscorea dumetorum three leaved yamDioscorea esculenta lesser yam or Chinese yamDioscorea bulbifera aerial yam and Dioscorea alata water yam or greater yam [ ].
Booth, R.Note: this study found evidence for the probable origin of Dioscorea rotundata "through the direct domestication of either one or several wild species" of sect. Enantiophyllum; it also proposed the application of this name to include cultivars currently recognized in D.
cayenensis, and the latter be a variety or subspecies of D. rotundata as "D. Jan 13, · The antimicrobial activities of Xylopia aethiopica and Dioscorea rotundata Poir book aromaticum extracts on fungi associated with rotting white and water yam was investigated.
Diseased and healthy yam species of Dioscorea spp. were obtained from some markets. Fungal isolation was done from the samples Dioscorea rotundata Poir book standard procedures. Leaves and fruits of X. aethiopica and S. aromaticum were obtained from the Author: T. C. Okpogba, A. A. Sobowale, I. T.
Gbadamosi. The most important species of Dioscorea include Dioscorea rotundata (guinea white yam), Dioscorea cayenensis (guinea yellow yam), Dioscorea dumetorum (three leaved yam), Dioscorea esculenta (lesser yam or Chinese yam), Dioscorea bulbifera (aerial yam) and Dioscorea alata (water yam or greater yam).
Yam is the second most important tuber crop.Healthy and diseased white pdf tubers (Dioscorea rotundata) pdf collected from three different open markets in Lagos tjarrodbonta.com were isolated from the yam twice monthly for three months.
The fungi isolated were identified as Aspergillus niger, Aspergillus flavus, Mucor racemosa, Botryodiplodia thoebromae and Macrophomina phaseolina.A. niger and A. flavus were found to be the most prevalent Author: Adeogun O.
Oluwagbenga, Adekunle A. Adedotun, Samuel O. Temitope, Ebabhi A. Margaret.Download pdf study was conducted at the Experimental Farm of the Cross River Basin Development Authority, Oku-Iboku, Itu in Akwa Ibom State in and cropping seasons.
The aim was to evaluate seven genotypes of guinea white yam (Dioscorea rotundata Poir.) accessions at the last stage of uniform yield trial (UYT) for yield and yield components. The.Iwuoha CI () Comparative evaluation ebook physico-chemical characteristics of flours from steeped tubers of white yam (Dioscorea rotundata Poir), water yam (Dioscorea alata L.) and yellow yam (Dioscorea cayenensis Lam).
Tropicultura 22(2)–63 Google Scholar.