Scientia Agricultura Sinica ›› 2005, Vol. 38 ›› Issue (02): 297-301 .

• PLANT PROTECTION • Previous Articles     Next Articles

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

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  1. 中国农业大学植物遗传育种系
  • Received:2004-05-25 Revised:1900-01-01 Online:2005-02-10 Published:2005-02-10

Abstract: 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.

Key words: Wheat, Puccinia striiformis, Adult-plant resistance

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