首页|期刊导航|中国农业科学（英文版）|Study on the Resistance Induced by Salicylic Acid Against Phytophthora capsici in Pepper (Capsicum annuum)
中国农业科学（英文版）2005，Vol.4Issue(3)：192-198,7.
Study on the Resistance Induced by Salicylic Acid Against Phytophthora capsici in Pepper (Capsicum annuum)
Study on the Resistance Induced by Salicylic Acid Against Phytophthora capsici in Pepper (Capsicum annuum)
摘要
Abstract
Pepper Phytophthora blight caused by Phytophthora capsici L. is the most destructive disease for reducing pepper yields in the world. Building up varietal resistance and induced resistance to the disease are of agricultural importance. In this paper, the disease resistance induced by salicylic acid (SA) against P. capsici were studied by using four hot pepper lines with different resistant abilities and one P. capsici strain with middle pathogenicity. Results show that SA could induce significantly the resistance of pepper seedlings to P. capsici, but CaC12, KH2PO4 and VAM couldn't. SA at a relative low concentration from 0.15 to 0.3 g L-1 had no antifungal activity in vitro against P. capsici. That means the disease resistant enhancement of the plants treated with SA is due to the induction effect, but not the antifungal effect of SA. About 1 to 5 days internal between SA-treatment and challenge inoculation was sufficient to induce the disease resistance of hot pepper. The resistance could remain more than 20 days after treatment with SA.关键词
Pepper/Phytophthora capsici/Salicylic acid(SA)/Induced resistanceKey words
Pepper/Phytophthora capsici/Salicylic acid(SA)/Induced resistance引用本文复制引用
MAO Ai-jun,WANG Yong-jian,FENG Lan-xiang,GENG San-sheng,XU Yong..Study on the Resistance Induced by Salicylic Acid Against Phytophthora capsici in Pepper (Capsicum annuum)[J].中国农业科学（英文版）,2005,4(3):192-198,7.基金项目
This research was supported by the National 863 Program of China (2002AA244021) and Science and Technology Commission of B eijing (HO 12010110113 ), China. （2002AA244021）
