Use Value of Some Characters Concerning Drought Resistance in Winter Wheat Under Water Stress

doi:10.3321/j.issn:1000-7091.1993.01.001

Abstract

Abstract: Under water stress in pot culture, use value of eight characters concerning drought resistance on fifteen winter wheat varieties (lines) with different drought resistance were studied.The analysis results showed that selection efficiency for grain weight per plant through four physiological characters-the stomatal diffusion resistance and the rates of evaporation of flag leaf in milk stage, two kinds of water use efficiency (calculated by grain weight or dry matter weight) were much lower than that through three agronomical characters-dry matter weight per plant, plant height, total area of upper three leaves.This indicated that they had less use value in breeding for drought resistance.

Key words: Winter wheat, Water stress, Drought-resistant character, Grain weight per plant, Selection efficiency

Chai Shouxi, Wang Dexuan, Chai Shoucheng. Use Value of Some Characters Concerning Drought Resistance in Winter Wheat Under Water Stress[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1993, 8(1): 1-6. doi: 10.3321/j.issn:1000-7091.1993.01.001.

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