Abstract: Based on the methods of Griffing, the test preparated diallelcrossing of varied types for drough-tresistanceidentificat ion under two treatments(drought and water condit ions) in the facilities of guarding against rain and land. It was measured including agronomic, physiological and biochemical traits of the height, strain panicles, grain weight perplant, kernel per ear, yellow leaves, SOD, POD,MDA and other indicators at different growth stages, and the genetic influence to future generations of different types hybrid combinationswas also be researched. Studying the relat ionship between drough-t resistance and inheritance, the results showed that the DRI may be indicators in evaluation drough-t resistance of wheat varieties. Dry weight, dryland spike length, dry yellow leaves, grain plumpness, yellowing, dry ears, dry height,and other dryland seven traits and the quality of quantitative traits with the close of the drought and strong heritability can be used as high-yield germplasm hybrid drought in the early identification of targets. SOD act ivity and the content of MDA may be early generation hybrid selection because the broad and narrow genetic heritability were higher, OA capacity and POD generalized genetic were higher and the narrow. heritability was lower than the parents varieties. It is a opitimum stage for choice at the late generation t ime of hybrid offsprings.

Key words: Wheat (Triticum aestivum L. ) , Drought stress, Drought resistance index (DRI) , Hotosynthesisparameter, Proline content

CLC Number: 

• S512.1