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1991—1994年陕西省小麦条锈菌优势生理小种是条中29号、“洛13致病类群”及“洛10致病类群”,在此其间还发现了新的毒性小种条中30、31号,它们对当前生产品种的毒力频率高达80.59%,既感染含Yr9的品种,又可感染含有繁6和水源11血统的品种,对当前我省30多万hm2的绵阳系统、川育系统、川农系统等抗锈良种造成严重威胁。据此,本文还提出了有关抗锈良种选育、多样化抗病性的开拓利用、生产品种布局的调整等建议。
In 1991-1994, the dominant physiological races of wheat stripe rust in Shaanxi province were No.29, No.13 disease group and No. 10 pathogenic group in Shaanxi Province. In the meantime, there were also found new toxic races , 31, their frequency of virulence of the current production varieties as high as 80.59%, both infected with Yr9 varieties, but also infected with breed 6 and water 11 breed varieties, the current my province more than 300000 hm2 Mianyang system , Chuan Yu system, Chuannong system and other anti-rust seeds pose a serious threat. Accordingly, this article also put forward some suggestions on the breeding of anti-rust seeds, the development and utilization of diversified disease resistance and the adjustment of the production variety layout.