上海农业学报2017，Vol.33Issue(6)：33-37,5.DOI:10.15955/j.issn1000-3924.2017.06.07
梨盘多毛孢褐斑病菌生物学特性及药剂毒力测定
The biological characteristics of Pestalotia guepini Desm.and toxicity test of fungicides to it
摘要
Abstract
In order to study biological characteristics of P.guepini Desm.and select fungicides against the pathogen,both colony growth and spore production were tested.The results indicated that both PDA and PSA media were the most suitable for the colony growth and there was the maximum spore output on dextrose peptone agar medium.The suitable temperature for the mycelial growth was 5-30 ℃ and the optimum was 25 ℃.At pH 4 or so the spore output was the maximum.The lethal temperature of the pathogen was 54 ℃.Full dark or full light was favorable for the colony growth and under full light the spore output was the maximum.The tests for carbon sources indicated that amylum and dextrose were favorable for the mycelial growth,and fructose was the most favorable for the spore production.The tests for nitrogen sources indicated that yeast extract,peptone and beef extract were favorable for the mycelial growth,and peptone was the most favorable for the spore production.The toxicity tests of 12 fungicides to P.guepini showed that pyraclostrobin,hexaconazole,carbendazim,prochloraz-manganese chloride complex had a higher toxicity and were ideal fungicides.The above results laid a foundation for efficiently culturing P.guepini under experimental conditions and controlling the disease caused by P.guepini in production.关键词
梨盘多毛孢褐斑病菌/生物学特性/产孢量/杀菌剂/毒力测定Key words
Pestalotia guepini Desm./Biological characteristic/Spore output/Fungicide/Toxicity test分类
农业科技引用本文复制引用
赵杰,戴富明..梨盘多毛孢褐斑病菌生物学特性及药剂毒力测定[J].上海农业学报,2017,33(6):33-37,5.基金项目
上海市浦东新区科技发展基金项目“梨树病虫害防控技术集成与示范”(PKJ2016-N02) （PKJ2016-N02）
