杀菌剂对毛壳核腔菌的抑制效果  

Inhibition of Fungicides to Pyrenophora chaetomioides

作　　者：何苏琴[1,2] 刘永刚 李广阔[3,4] 李风庆 HE Suqin;LIU Yonggong;LI Guangkuo;LI Fengqing(Institute of Plant Protection,Gansu Academy of Agricultural Sciences,Lanzhou Gansu 730070,China;Scientific Observing and Experimental Station of Crop Pests in Tianshui,Ministry of Agriculture and Rural Affairs of P.R.China,Gangu Gansu 741200,China;Institute of Plant Protection,Xinjiang Academy of Agricultural Sciences,Xinjiang Uygur Autonomous Region,Urumqi Xinjiang 830091,China;Key Laboratory of Integrated Pest Management on Crops in Northwestern Oasis,Ministry of Agriculture and Rural Affairs of P.R.China,Urumqi Xinjiang 830091,China;Institute of Agricultural Sciences of Gannan Area,Hezuo Gansu 747000,China)

机构地区：[1]甘肃省农业科学院植物保护研究所,甘肃兰州730070 [2]农业农村部天水作物有害生物科学观测实验站,甘肃甘谷741200 [3]新疆农业科学院植物保护研究所,新疆乌鲁木齐830091 [4]农业农村部西北荒漠绿洲作物有害生物综合治理重点实验室,新疆乌鲁木齐830091 [5]甘南州农业科学研究所,甘肃合作747000

出　　处：《甘肃农业科技》2021年第12期56-59,共4页Gansu Agricultural Science and Technology

基　　金：农业农村部西北荒漠绿洲作物有害生物综合治理重点实验室开放基金(KFJJ202106);甘肃省农业科学院农业科技创新专项(2021GAAS21)。

摘　　要：毛壳核腔菌[Pyrenophora chaetomioides(synonym:Drechslera avenae)]是一种广泛分布于世界各燕麦产区的病原真菌,可为害燕麦的叶片和小穗,降低燕麦产量和饲草品质。采用含药平板法测定了8种杀菌剂(15%三唑酮可湿性粉剂、75%百菌清可湿性粉剂、50%多菌灵可湿性粉剂、70%代森锰锌可湿性粉剂、50%速克灵可湿性粉剂、10%苯醚甲环唑水分散粒剂、430 g/L戊唑醇悬浮剂和400 g/L氟硅唑乳油)对毛壳核腔菌(菌株ASA-11和ASA-13)的抑菌效果。结果表明,在试验浓度下,8种供试杀菌剂对毛壳核腔菌菌丝生长均具有不同程度的抑制效果,其中70%代森锰锌可湿性粉剂500倍液,10%苯醚甲环唑水分散粒剂1000倍液、5000倍液和400 g/L氟硅唑乳油5000倍液、10000倍液的抑菌效果最好,均达100%;50%多菌灵可湿性粉剂500倍液的抑菌效果最差,仅为40.77%。Pyrenophora chaetomioides(synonym:Drechslera avenae)is a cosmopolitan pathogen of Avena spp.,and infects leaves and spikelets,reducing grain yield and forage quality.Fungicide sensitivity of P.chaetomioides isolates(ASA-11 and ASA-13)was assessed by amendment plate method:autoclaved PDA media were amended prior to pouring with 8 different fungicides(triadimefon 15%WP,chlorothalonil 75%WP,carbendazim 50%WP,mancozeb 70%WP,procymidone 50%WP,difenoconazole 10%WDG,tebuconazole 430 g/L SC and flusilazole 400 g/L EC).The results showed that under test concentrations,all eight fungicides could inhibit the mycelial growth of P.chaetomioides,of which mancozeb 70%WP(500 times),difenoconazole 10%WDG(1000 times,5000 times)and flusilazole 400 g/L EC(5000 times,10000 times),inhibitory effects were up to 100%;carbendazim 50%WP(500 times)exhibited the worst inhibitory effect,only to 40.77%.

关 键 词：毛壳核腔菌 杀菌剂 燕麦 

分 类 号：S512.6[农业科学—作物学]