| 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100％，表明利用抗病性组分在苗期进行慢锈性和高温抗锈性鉴定是可行的。 |
| 关键词: 小麦 条锈菌 慢锈性 高温抗锈性 抗病性组分 |
| DOI： |
| 分类号: |
| 基金项目:国家“九五”攻关项目(96-005-01-02)；陕西省科技攻关项目(97K03-G5-01) |
|
| Slow-rusting and high-temperature resistant components of wheat to Puccinia striiformis |
|
|
| Abstract: |
| 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. |
| Key words: wheat Puccinia striiformis slow-rusting high-temperature rust resistance resistant components |
