Clonal evaluation of yam tubers raised from yam true seed
نویسندگان
چکیده
منابع مشابه
Comparative Evaluation of 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)
The study examined Yam Tuber Species (YTS), Tuber Steeping Duration (TSD) and Flour Particle Size (FPS) as factors of flour. Data were collected using white yam, water yam and yellow yam steeped in water (30 ± 2 °C, pH 6.78) and withdrawn, and the flour classified, and analyzed for each parameter. Results obtained showed that all the test parameters, Water Retention Capacity (WRC), Swelling Ind...
متن کاملPhases of dormancy in Yam tubers (Dioscorea rotundata).
BACKGROUND AND AIMS The control of dormancy in yam (Disocorea spp.) tubers is poorly understood and attempts to shorten the long dormant period (i.e. cause tubers to sprout or germinate much earlier) have been unsuccessful. The aim of this study was to identify and define the phases of dormancy in Dioscorea rotundata tubers, and to produce a framework within which dormancy can be more effective...
متن کاملRetention of iron and zinc in yam flour and boiled yam processed from white yam (D. rotundata) varieties
This study investigated the impact of processing on retention of iron and zinc in D. rotundata. Fresh tubers were processed into boiled yam and yam flour and analyzed for zinc, iron, and physicochemical properties. Percent true retention (%TR) was assessed using paired samples and a formula that compensated for loss or gain of moisture and soluble solids. The retention of iron ranged from 55.5%...
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White yam tissues naturally and artificially infected with root-knot nematodes were fixed, sectioned, and examined with a microscope. Infective second-stage juveniles of Meloidogyne incognita penetrated and moved intercellularly within the tuber. Feeding sites were always in the ground tissue layer where the vascular tissues are distributed in the tubers. Giant cells were always associated with...
متن کاملGranular Nematicides for Control of the Yam Nematode, Scutellonema bradys, and Relevant Residues in Raw Tubers.
Four granular nentaticides were evaluated for control of the yam nematode, Scutellonema bradys (Steiner &LeHew) Andrassy, on Guinea yam, Dioscorea rotundata Poir, under field conditions prevelant in the tropics. A single application of nematicides (sidedressing) at the rate of 2 kg ai/ha as postplanting treatment at the onset of the rainy season depressed numbers of S. bradys attacking yams dur...
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ژورنال
عنوان ژورنال: Agro-Science
سال: 2000
ISSN: 1119-7455
DOI: 10.4314/as.v1i2.1456