论文部分内容阅读
对82份小麦品种(系)进行大田成株期慢锈性鉴定,并通过潜育期、病情指数和千粒重损失率等3个抗性组分的相关分析和品种聚类分析,将供试品种划分为5大类,即高度慢锈性品种、中度慢锈性品种、耐锈性品种、中度快锈性品种和高度快锈性品种。划分结果与前人的经验划分结果符合率达92.68％,分别建立了5个判别函数。对3个抗性组分的相关分析结果表明,潜育期与病情指数、千粒重损失率呈极显著负相关,且病情指数对千粒重损失率的影响大于潜育期。
Eighty-two wheat cultivars (lines) were identified for their slow-rusting in the field and in the field. The correlation analysis and cluster analysis of three resistant components, including the incubation period, disease index and the loss of 1000-grain weight, Divided into five categories, namely, a high degree of slow-rusting varieties, moderately slow-rusting varieties, rust-resistant varieties, moderately fast rusting varieties and highly rusty varieties. According to the results of previous research, the coincidence rate is 92.68%, and five discriminant functions are established respectively. Correlation analysis of the three resistant components showed that there was a significant negative correlation between the latent period and the disease index and 1000-grain weight loss rate, and the disease index had a greater impact on the 1000-grain weight loss rate than the latent period.