中国烟草科学2024，Vol.45Issue(1)：79-86,8.DOI:10.13496/j.issn.1007-5119.2024.01.011
什邡雪茄烟叶黑胫病菌遗传多样性分析及防治药剂筛选
Genetic Diversity Analysis and Fungicides Screening of the Pathogen Causing Cigar Tobacco Black Shank in Shifang
摘要
Abstract
In order to effectively control tobacco black shank of cigars caused by Phytophthora parasitica in Shifang,27 strains of P.parasitica were analyzed for mating type,population genetic diversity and effective fungicides screening.The results showed that 27 strains were A2 mating type indicating no sexual recombination of P.parasitica in Shifang.Corrected Simpson index and genotypic evenness were 0.776 and 0.643,suggesting the genetic diversity for P.parasitica strains was relatively high.Analysis of molecular variance and a principal coordinate analysis showed that the pathogen population in Shifang was different between strains from other areas and the major(92%)of the genetic divergence was within populations.Overal,metalaxyl,dimethomorph and cyazofamid had the best inhibitory effect on 27 strains,and the average EC50 value was 0.491,0.574 and 0.730 mg/L,respectively.The results can provide guidance for the scientific and effective control of tobacco black shank of cigars in Shifang.关键词
雪茄烟叶/黑胫病/交配型/遗传多样性/药剂筛选Key words
cigar tobacco leaves/black shank/mating type/genetic diversity/fungicides screening分类
农业科技引用本文复制引用
王瑢笙,毕馨月,王俊,向欢,兰鑫宇,周士栋,吴元华,陈勇..什邡雪茄烟叶黑胫病菌遗传多样性分析及防治药剂筛选[J].中国烟草科学,2024,45(1):79-86,8.基金项目
中国烟草总公司四川省公司科技项目(SCYC202322、SCYC202011) （SCYC202322、SCYC202011）
