小麦对条锈病水平抗性育种方法研究──准水平抗性材料的搜集和筛选

Studies on Breeding for Horizontal Resistance Against Wheat Stripe Rust─Collection of and Screening for Materials That Might Possess Horizontal Resistance

根据前人思路及经验，从量的概念出发，搜集到准水抗材料170份。抗性鉴定结果表明，其中59份表现高抗及良好水平特性。33份表现p，s／O型反应，水平特性较好。17份表现垂直特性。9份表现苗期高感。并对各种类型的准水抗材料的应用前景进行了讨论。

Based on the idea and experience of previous authors, as well as the concept of quantitative resistance, 170 candidate entries of wheat that might possess horizontal resistance against stripe rust (Puccinia striiformis) were collected and tested with different races of the pathogen. Results of seedling and adult plant (some entries) tests for resistance indicated that 59 entries were highly resistant, with no or little race specificity, 33entries gave p,s/O type reaction, showing horizontal tendency. 17 entries showed vertical resistance., and 9 entries were highly susceptible during the seedling stage. The prospect of the utilization of different types of candidate horizontally resistant materlals was also discussed.