Disease resistance evaluation and molecular detection of resistance genes of 83 Xinong wheat varieties(lines)
In order to promote the new wheat varieties(lines)developed by Northwest A&F University to a large area in the Huanghuai wheat-growing region,83 newly developed wheat varieties(lines)of Northwest A&F University were evaluated for resistance to stripe rust and powdery mildew at the seed-ling stage,and resistant to stripe rust,powdery mildew,leaf rust,and Fusarium head blight(FHB),at the adult plant stage in this research;and their resistance was evaluated and molecular detection of re-lated resistance genes was performed in the field.The results indicated that 63,29 and 16 wheat variet-ies(lines)tested showed resistance to stripe rust physiological races CYR32,CYR33 and CYR34,re-spectively,and nine wheat varieties(lines)showed resistance to all three in the seedling with artificial inoculation;ten,three and 0 wheat varieties(lines)showed resistance to powdery mildew physiological races E15,E09 and A13,respectively.In the evaluation with artificial inoculation at the adult plant stage,23,15,28 and 62 wheat varieties(lines)showed resistance to stripe rust,powdery mildew,leaf rust and FHB,respectively.Six out of the 83 wheat varieties(lines)showed resistance to wheat stripe rust at both seedling and adult plant stages.In field disease evaluation,57,six,65 and 40 out of 83 wheat varieties(lines)showed to stripe rust,powdery mildew,head blight and leaf rust,respectively.Of the 83 wheat varieties(lines)tested,three contained the Yr5 gene,22 contained the Yr9 gene,three con-tained the Yr17 gene,two contained the Pm24 gene,and 14 contained the Lr1 gene,with proportions of 3.6％,26.5％,3.6％,2.4％,and 16.8％,respectively.
万方数据
维普
