| In order to clarify the utilization of stripe rust resistance level and resistance genes of 90 wheat varieties(lines) in Yili River Valley, stripe rust physiological races CYR23, CYR29, CYR31, CYR32, CYR33 and CYR34 were used to identify stripe rust resistance in these wheat materials at seedling stage, combined with seven previously reported molecular markers closely linked to stripe rust resistance genes Yr5, Yr9, Yr10, Yr15, Yr18, Yr26, and Yr80 for detecting the genotype of the test materials. The results showed that 27 materials were resistant to stripe rust at seedling stage, 19 of which were immune or near-immune. There were 11, 7, 8, 8, 1, and 34 materials carrying resistance genes Yr9, Yr10, Yr15, Yr18, Yr26, and Yr80, respectively. Eleven materials carry two resistance genes, and only one material carries 3 resistance genes. Yr5 was not detected from the test materials. All the above resistance genes were not detected in 21 germplasms, 5 of which showed high resistance to stripe rust at seedling stage. The selected varieties(lines)(Xindong 21, Ningchun 26, Kuidong 4, Kuihua 1, 2016-138-2 and 2016-119-12) aggregated multiple resistance genes and had great resistance at seedling stage, which have great application potential in wheat rust resistance breeding and safe production. |
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