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《Journal of Agricultural University of Hebei》 1991-02
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On Morphological and Physiological Characters for Drought Resistance in Rainfed Wheat

Zhang Rongzhi Lu Jianxiang (Dept.of Agron.Hebei Agri. Univ., Baoding. China)  
Drought resistanceis a very complicate multigenic characters. The results presented that it was among a series of physiological and morphological changes and significantly negatively related to water content in leaves during growing, especilly during the stem pushing period. The varieties with different drought resistance differed signicantly in water content in leaves.Varieties with higher drought resistance had higher water retaining capacity.The varieties with different drought resistance in plant height,seedling height in the stem pushing period, longth of top internode and relative degree of head sprouting and positive correlation was observed. These characters could be used as reliable morphological indicators in idontifying drought resistance of wheat varieties. According to decreasing index from drought,the number of heads per plant responded most senstively to drough, followed by plant height and seeding height at the stem pushing stage.Therefore, gelecting drought resistance varieties lay in the number of heads per plant,plant height and other characters,which were less sensitive to drought.
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