摘要
0引言香榧(Torreya grandis cv.Merrillii)为我国特有的珍稀经济干果与重要木本油料作物[1],主要分布于浙江省诸暨、绍兴、临安等地[2],香榧产业发展迅速,已成为当地农业支柱产业和农民增收的主要来源[3]。近年来,多地香榧林出现根腐病且为害日益严重,成为影响香榧产业可持续发展的重要障碍之一。因此香榧根腐病病原菌鉴定与防治技术研发迫在眉睫。
To effectively control root rot of Torreya grandis,pathogenic fungi were obtained from the diseased roots of T.grandis by tissue isolation and single spore culture.Through pathogenicity detection,morphological observation and sequence analysis of ITS1,RPB1,RPB2 and TEF1,it was identified as Fusarium solani,which is the first reported pathogen of T.grandis root rot at home and abroad.Seven kinds of green fungicides were screened in the laboratory,among which 50%fludioxonil suspension,50%azoxystrobin suspension emulsion,3%mefenoxam aqueous solution and 10%jinggangmycin aqueous solution had strong fungicidal action against F.solani.The EC_(50)of them were 0.0949,0.1676 mg,0.6014 and 1.2587 mg·L^(-1),respectively.The results of field efficacy tests showed that the control effect of 3%mefenoxam against root rot of Torreya grandis is 55.75%,the highest among the four fungicides.
作者
张思琦
沈黄莹
庾金武
苏秀
周水根
周旭东
林海萍
ZHANG Siqi;SHEN Huangying;YU Jinwu;SU Xiu;ZHOU Shuigen;ZHOU Xudong;LIN Haiping(Zhejiang A&F University State Key Laboratory of Subtropical Silviculture,Hangzhou 311300,China;Suichang Bureau of Natural Resources and Planning,Suichang 323300,China;Hangzhou Professional Cooperative of LüDing Bamboo Shoot,Hangzhou 311123,China)
出处
《植物病理学报》
CAS
CSCD
北大核心
2022年第3期499-503,共5页
Acta Phytopathologica Sinica
基金
杭州市临安区科技项目(2020A008)
浙江省重点研发项目(2019C02024)。
