小麦品种成株期抗条锈性表达生育期的研究

 对5个携带不同成株期抗性的小麦品种在温室和田间成株期抗病性的研究表明，Chuanyu 12在温室条件下表现感病到中度感病，而在田间表现抗病；携带慢锈性抗性的品种Weebill在温室和田间都表现中度抗病；携带Yr18和2~3个微效抗性基因的品种Chpaio, Tukuru 和 Saar，在温室和田间都表现高度抗病。在温室条件下，对在不同生育期5个抗病品种的反应型和潜育期的研究表明，反应型在分蘖期开始降低，而潜育期随着生育期的发展表现延长。虽然田间严重度和温室反应型、潜育期之间有良好的相关性，成株期抗性的鉴定仍最好在田间进行。

Study of the Adult-plant Resistance at Different Growth Stages to Stripe Rust in Wheat

Resistance of five adult-plant resistant (APR) wheat (Triticum aestivum) genotypes at six growth stages and under two temperatures was investigated in greenhouse and in a field trial. Chinese cultivar Chuanyu 12 displayed high to intermediate susceptibility in greenhouse but was highly resistant in the field. 'Weebill' showed an intermediate susceptibility in the greenhouse and also in field. Chapio, Tukuru and Saar, known to carry combinations of Yr18 and 2-3 additional minor genes, displayed highly resistant in both experiments. Greenhouse experiments showed that the lower susceptibility of APR was initiated at tillering, and latent period of APR genotypes was generally longer as the growth stage progressed. It is concluded that APR to stripe rust can be best characterized in field trials although significant correlations are seen between field severity and greenhouse measured susceptibility and latent period.