不同小麦品种组合条件下条锈病流行的时间动态

Studies on temporal dynamic of epidemic of wheat stripe rust in different cultivars mixture

为了明确条锈病在小麦混合群体中的发展规律,采用人工接种方法研究了不同抗性小麦品种混播条件下条锈病的流行动态。结果表明,混播群体中条锈病的病情和流行速率降低;在2-4个抗性小麦品种组合中,其混合效应随混合群体中小麦品种组合数目的增多而增强,当组分数目增加到5个时,混合效应不再继续增加;在小麦品种搭配上,以抗感搭配效果显著。

Temporal dynamics was studied for exploring epidemicity of wheat stripe rust in cultivars mixture through inoculating artificially,the results indicated that disease index and infection rate decreased in group;mixture effects intensified with the increase of group numbers in 2-4 cultivars mixture and stopped at the number of 5.R-S mixture were affected significantly in different cultivars.