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首页> 外文期刊>Range Management & Agroforestry >Uncontrolled variations in multilocational breedings trials in rainfed forage cowpea (Vigna unguiculata L. Walp)
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Uncontrolled variations in multilocational breedings trials in rainfed forage cowpea (Vigna unguiculata L. Walp)

机译：雨养饲用cow豆（Vigna unguiculata L. Walp）多地点育种试验的不受控制的变异

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摘要

Cowpea (Vigna unguiculata L. Walp.), is grown by and large as a fodder crop in intercropping or mixed cropping systems with Sorghum or bajra in northern region of the country. Its sustainability in a range of rainfed evasion ranging from 500 to 2000mm rainfall and adaptability in normal to acidic soils makes it suitable for including in different cropping systems, rotations, situations and agro-environments. In All India Co-ordinated breeding trials, genetic potential of the elite lines, however,is assessed as a sole crop in different zones of the country separately and also on all India basis. The uncontrolled variation plays a significant role in the expression of a genotype and genotype X environment interaction. A deadline of 20 per cent coefficient of variation is adopted arbitrarily as a tolerable limit for uncontrolled variation beyond which selection procedure is treated null and void as the high order of experimental error reduces the precisions in comparison (Fisher, 1944; Panse and Sukhatme, 1967 and Griffith Davies, 1931). High magnitude of coefficient of variation leads the intervarietal comparisons insensitive and minute differences between the treatments may not be detected (Smith, 1938 and Khan et. al., 1993).
机译：pea豆（Vigna unguiculata L. Walp。）在该国北部地区与高粱或or麦作套种或混作系统，通常作为饲料作物种植。它在500至2000mm降雨范围内的雨养逃逸性上具有可持续性，并且在普通土壤到酸性土壤中均具有适应性，使其适合于包括在不同的耕作系统，轮作，环境和农业环境中使用。在所有印度统筹的育种试验中，精英系的遗传潜力被分别评估为该国不同地区的唯一作物，并且也被评估为整个印度的基础。不受控制的变异在基因型和基因型X环境相互作用的表达中起重要作用。任意采用20％变异系数的最后期限作为不受控制的变异的可容忍极限，超过此选择过程将视为无效，因为较高的实验误差降低了比较的精度（Fisher，1944; Panse和Sukhatme，1967年和格里菲斯·戴维斯（1931）。高的变异系数导致品种间的比较不敏感，并且处理之间的细微差异可能无法检测到（Smith，1938; Khan等，1993）。

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