| 摘要: |
| 研究了中国条锈菌主要流行小种条中22，23，25，27，28和29号的相对寄生适合度。常温苗期试验以5个重要栽培品种为试材，测定了诸小种主要寄生适合度属性，主成分分析表明各寄生适合度属性中以产孢能力最重要，其次为侵染能力和孢子生活力，条中26号和29号寄生适合度较高，25号和28号较低。此外，还在低温（10℃）条件下和成株期进行了补充测定。根据研究结果曾预测条中29号将上升为优势小种并得到验证。 |
| 关键词: 寄生适合度，生理小种，小麦条锈病 |
| DOI： |
| 分类号:S435.121.4 |
| 基金项目:高等学校博士点基金资助项目 |
|
| Parasitic Fitness of the Major Epidemic Races of Wheat Stripe Rust in China |
|
Zhang Chuanfei Sbang Hongskeng Li Zhenqi
|
| Abstract: |
| The relative Parasitic fitness of the major epidemic races of wheat striPe
rust(Puccinia striiformis West.),namely CY-22,23,25,26,27,28 and 29 was studied.In
the seedling stage and at normal temperature,5 important wheat cultivars were used as
the testing materials to determine the prineipal parasitic fitness of eaeh race.The results
of principal component an alysis showed that the most important component of parsitic
fitness was the sporulating capacity,the second important component was the infection
ability and the third was spore vitality.CY-26 and CY-29 had the highest relative parasitic fitness,while CY-25 and CY-28 the lowest.In addition,the supplementary determination was carried out in the case of low temperature(10℃)and at the seedling stage.
On the basis of the above results,it was predicted that CY-29 would be come the predominant race and the predietion was also proved to be true. |
| Key words: parasitic fitness ,race,wheat stripe rust |
