农药学学报2011，Vol.13Issue(5)：535-538,4.DOI:10.3969/j.issn.1008-7303.2011.05.17
大黄酚对黄瓜白粉病的生物活性及内吸传导性研究
Research on biological activity and the uptake translocation of chrysophanol against Sphaerotheca fuliginea in cucumber
摘要
Abstract
The biological activity of chrysophanol on the development of Sphaerotheca fuliginea Poll, and the uptake translocation of chrysophanol in cucumber leaves were determined by spraying method. The results showed that chrysophanol has high toxicity against S. Fuliginea, powdery mildew colonies on the infected leaves were brown and dead at 2 days after being treated with 200 mg/L chrysophanol. Morphological investigation by scanning electron microscopy showed that chrysophanol affected fungal survival, caused distortion and malformation of hyphae and conidiophores, and conidia collapsed. The efficacy of chrysophanol in controlling cucumber powdery mildew, remained 84. 83% 20 days after foliages spraying with chrysophanol at 100 mg/L on cucumber cotyledons, which was similar to that of 50% sulfur SC at 500 mg/L. Moreover, chrysophanol showed certain cross-layer and little transverse effect in cucumber plants,but no acropetal and basipetal uptake translocation effect.关键词
大黄酚/黄瓜白粉病菌/生物活性/传导性Key words
chrysophanol/ Sphaerotheca fuliginea/ biological activity/ uptake translocation分类
农业科技引用本文复制引用
任红敏,赵云和,范凡,王树桐,张瑜,曹克强..大黄酚对黄瓜白粉病的生物活性及内吸传导性研究[J].农药学学报,2011,13(5):535-538,4.基金项目
国家科技部国际科研合作项目(2006DFB72260). （2006DFB72260）
