安徽农业大学学报2024，Vol.51Issue(3)：411-418,8.DOI:10.13610/j.cnki.1672-352x.20240710.018
四川省4个主栽核桃品种对炭疽病的生理生化响应
Physiological and biochemical responses to anthracnose disease of four main walnut cultivars in Sichuan Province
摘要
Abstract
In this study,taken four varieties with relatively large cultivation areas in Sichuan Province,i.e.,'Wanghe 2','Chuanhe 66','Yanyuanzao',and'Shuoxing'as the research objects,an artificial infection with an-thracnose was carried out,the leaf disease characteristics and related physiological and biochemical indicators were measured after infection,and the resistance to anthracnose was comprehensively evaluated.The results showed that:as the infection time of anthrax prolonged,the leaf incidence rate,disease spot area,expansion ratio of new disease spots and disease index of the four varieties showed a trend of increasing first and then decreasing,among them,the largest incidence and disease spot area were'Wanghe 2'and'Shuoxing',and the smallest was'Yanyuanzao';the chlorophyll content and CAT activity showed a continuous decreasing trend,while the MDA content,POD activity and SOD activity showed an increasing or decreasing trend.The results of correlation anal-ysis and grey correlation degree showed that the POD activities in the four varieties were significantly positively correlated with the disease spot area,the expansion ratio of new disease spot area and disease index(P<0.01),while their chlorophyll contents were significantly negatively correlated with the disease spot area,the incidence rate,the expansion ratio of new disease spot area and disease index(P<0.01);the comprehensive correlation order of various disease resistance indicators in the four walnut varieties was POD activity>MDA content>SOD activi-ty>CAT activity>chlorophyll content.关键词
核桃炭疽病/抗性评价/生理生化/病情指数Key words
walnut anthracnose/resistance evaluation/physiology and biochemistry/disease index分类
农业科技引用本文复制引用
李润,董茂坤,吴雨桦,刘华,李丕军,邢文曦,冯春..四川省4个主栽核桃品种对炭疽病的生理生化响应[J].安徽农业大学学报,2024,51(3):411-418,8.基金项目
四川省科技厅重点研发项目"突破性林木育种材料和方法创新及新品种选育"子专题(2021YFYZ0032)和四川省基本科研项目(2021JBKY07)共同资助. （2021YFYZ0032）
