Abstract
To study the possibility of adopting root system properties as a selective function for drought tolerance of different mays genotypes. This study included 18 genotypes, planted by using plastic columns, 120 cm height and 50 cm diameter, under two levels of plant available water consumption and use Randomized Complete Block Design (RCBD) with three replicates, the main plots were for water stress, 25% and 75% plant water available consumption, while the subplots were for genotypes in both field experiments. In addition, G10 gave higher root length of 131.33 and 134 cm in spring and autumn, respectively. G15 gave a higher root dry weight at Yp and Ys treatments, while G13 gave a higher dry weight at Ys and Yp treatments autumn seasons. Through experimental results shows no significant correlation between some recipes root and guide stress tolerance Index (STI) recipe dry weight has been marked by the roots of a high correlation between indicators of drought tolerance and both seasons. So can plant breeders use recipes dry weight of the root and the vertical angle electoral evidence to withstand dry.
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