小麦慢锈性和高温抗锈性组分分析  

Slow-rusting and high-temperature resistant components of wheat to Puccinia striiformis

作　　者：马青[1] 王美楠[1] 商鸿生[1] 李振岐[1] 强磊[1] 孙辉[1] 

机构地区：[1]西北农林科技大学植物保护学院,陕西杨陵712100

出　　处：《西北农林科技大学学报（自然科学版）》2002年第4期51-54,共4页Journal of Northwest A&F University(Natural Science Edition)

基　　金：国家"九五"攻关项目 (96-0 0 5 -0 1-0 2 ) ;陕西省科技攻关项目 (97K0 3 -G5 -0 1)

摘　　要：在苗期控温条件下 ,对具有慢锈性和高温抗锈性的 15个小麦品种接种条锈菌后的潜伏期、产孢强度、孢子堆密度和孢子堆长度等 4个抗病性组分进行了测定。结果表明 ,慢锈品种和高温抗锈性品种在抗病性组分方面与感病品种不同。通过聚类分析 ,将其划分为 6类 :近免疫抗病、高温抗锈性、高度慢锈性、中度慢锈性、耐病性和感病性。根据聚类结果 ,分别建立了 6个判别函数 ,其经验品种回判符合率为 10 0 %。At seedling stage under controlled temperatures,four resistant components of latent period,sporulation capacity,uredinial density and uredinial length were measured in fifteen wheat cultivars with slow rusting and high temperature resistance.The results show that the slow rusting and high temperature resistant cultivars differ from susceptible cultivars in their resistant components.Based on cluster analysis,the fifteen wheat cultivars can be divided into six resistant types,i.e.near immune,high temperature resistant,high slow rusting,intermediate slow rusting,tolerant,and susceptible cultivars.From the cluster results,six discriminate functions are established with their fit rates as 100%,showing that identifying slow rusting and high temperature resistance at seedling stage is feasible.

关 键 词：小麦 慢锈性 高温抗锈性 条锈菌 抗病性组分 

分 类 号：S435.121.4[农业科学—农业昆虫与害虫防治]