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首页> 外文期刊>Asian Journal of Plant Sciences >Root Characteristics of Drought Tolerant Bread Wheat ( Triticum aestivum ) Genotypes at Seedling Stage
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Root Characteristics of Drought Tolerant Bread Wheat ( Triticum aestivum ) Genotypes at Seedling Stage

机译：耐旱面包小麦基因型苗期根系特征。

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摘要

A study was carried out between March 1999 and April 2000 at the National Plant Breeding Research Station Njoro. The aim of the study was to describe the root characteristics of drought tolerant, moderately tolerant, and susceptible bread wheat genotypes at seedling stage (49 days). Three commercial wheat varieties Duma, Kenya mbweha and Mbuni which are tolerant, moderately tolerant and susceptible, respectively were screened together with three lines R830, R831 and R748 which have also been identified to show drought tolerance characters. The six genotypes were planted in boxes measuring 0.03x1x0.3m after being determined as the best box sizes for screening the roots of wheat seedlings. The rooting patterns were studied. Results showed that drought tolerant genotypes had significantly (p<0.05) more roots in the crown region with the nodal and seminal roots concentrated closer to the soil surface while the susceptible genotypes had fewer roots in the crown region with most of the roots concentrated away from the soil surface.
机译：在1999年3月至2000年4月之间，在国家植物育种研究站Njoro进行了一项研究。本研究的目的是描述幼苗阶段（49天）耐旱，中度耐旱和易感的面包小麦基因型的根系特征。分别筛选了三个耐性，中度耐性和易感性的商业小麦品种杜马，肯尼亚mbweha和姆布尼，并鉴定了三个具有耐旱性的品系R830，R831和R748。在确定这是筛选小麦幼苗根部的最佳盒子大小后，将这六个基因型种植在尺寸为0.03x1x0.3m的盒子中。研究了生根模式。结果表明，耐旱基因型在冠部区域的根系显着较多（p <0.05），而节根和精浆的根系更靠近土壤表面，而易感基因型在冠部区域的根系较少，大部分根系远离土壤土壤表面。

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