Drought Resistance Analysis in Spring Wheat Varieties

To study the genotypes differences of spring wheat varieties,28 spring wheat varieties were tested in irrigation and drought two treatments,and Jinmai 33 was used as control,drought resistance indexes of drought resistance coefficient and drought resistance were compared and analyzed.The results showed there existed huge genetic difference in drought resistance among spring wheat varieties and a highly significant positive correlation between indexes of drought resistance as well as yield in dry land and drought resistance coefficient(correlation coefficients were 0.93 and 0.85 respectively).This study screened two spring wheat varieties with extremely strong drought resistance of 9693 and 9738 and one varieties with strong drought resistance of 9681,accounting for 10.7% of the total tested varieties;4 varieties with medium drought resistance of 9643,9658,9725 and 9742,accounting for 14.3% of the tested varieties.The results of this study provided reference for drought-resistance breeding in spring wheat.