关键词: 小麦育种, 黑麦, 条锈病, 慢锈性

Abstract: Thousands of wheat adv anced lines originated from hybrids between wheat(Triticum aes-tivum L.) and rye(Secale cereale L.) different varieties wereinvestigatedfor stripe rust resistance in 2003 and 2004.The results show that many lines were immune or high-resistant to stripe rust,and ex-hibit excellent agronomic characters.Some lines which were immune or high-resistant to stripe rust in 2003 lost their resistancein 2004,while otheri mmune-,high- or medium-resistant lines exhibited last-ing resistance to stripe rust.The results suggest that the resistance to stripe rust originated from rye can behave with a diversity of vertical and horizontal resistance as well as slow-rusting as those resistant genes from wheat.In addition,it is found that there also exists segregation of resistance in F₇ and even later generations.For this reason it is necessary to continuously select in the advanced generation in wheat breeding for resistance to stripe rust.

Key words: wheat breeding, rye, wheat stripe rust, slow-rusting