Preliminary Effects of 4 Resistance Inducers on Tomato Resistance to Late Blight
LI Shao-bo1，2，SHI Yan-xia2*，LIU Jun-li1，XIE Xue-wen2，LI Bao-ju2*
1Shenyang Agricultural University， Shenyang 110866， Liaoning， China； 2Institute of Vegetables and Flowers，Chinese Academy of Agricultural Sciences， Beijing 100081， China
Abstract：In order to identify the resistance of tomato to late blight（ Phytophthora infestans）induced by benzothiadiazole，lentinan，chitosan and amino-oligosaccharin，this study determined the bacteriostatic activity of the above 4 elicitors．The results showed that these 4 elicitors had no significant bactericidal activity，and their inhibitory effects were generally less than 30%. The results of pot experiment indicated that the effects of induced resistance of these 4 elicitors with different concentrations against tomato in seedling stage were good．Among them，2% chitosan（ AS） at concentration of 500 mg·L-1 was 90.06%，which has the best control efficiency．The results of field experiment indicated that the effects of induced resistance of these 4 elicitors with different concentrations against tomato late blight in adult-plant stage were over 70%（ except the treatment of 2% chitosan AS at concentration of 125 mg·L-1）．The better treatments were 1% benzothiadiazole（ EW）at concentration of 50 mg·L-1 and 3% amino-oligosaccharin AS at concentration of 100 mg·L-1．Their control efficiencies were 94.71% and 95.89%，respectively．
李少波, 石延霞, 刘君丽, 谢学文, 李宝聚. 4 种诱抗剂诱导番茄抗晚疫病的初步效果[J]. 中国蔬菜, 2013, 1(12): 49-54.
LI Shao-Bo, SHI Yan-Xia, LIU Jun-Li, XIE Xue-Wen, LI Bao-Ju. Preliminary Effects of 4 Resistance Inducers on Tomato Resistance to Late Blight. , 2013, 1(12): 49-54.
