浙江农业学报2025，Vol.37Issue(12)：2449-2457,9.DOI:10.3969/j.issn.1004-1524.20240672
浙江省2014-2023年区域试验中水稻品种的稻瘟病抗性分析
Analysis of rice blast resistance in rice varieties from regional trials in Zhejiang Province of China from 2014 to 2023
摘要
Abstract
From 2014 to 2023,a total of 1498 new rice varieties from the regional trials in Zhejiang Province were e-valuated for resistance to rice blast(including rice leaf and panicle blast),to analyze the resistance levels of new rice varieties in Zhejiang and compare the differences among different types of rice varieties.Rice leaf blast resist-ance was assessed by artificial inoculation,while panicle blast resistance was evaluated through natural infection in field.The results showed that,except for the disease grade of panicle blast incidence,the average values of disease grade of leaf blast,disease grade of panicle blast loss rate,composite index of rice blast,and the highest disease grade of panicle blast loss rate all indicated a moderate resistance level.The varieties tested in 2018 and 2020 exhib-ited the best overall blast resistance,while those from 2023 showed the poorest rice leaf blast resistance,and the va-rieties from 2016 performed the worst in both panicle blast resistance and comprehensive resistance.Among the test-ed varieties,the moderately resistant type accounted for the largest proportion,followed by the moderately susceptible type.Based on the composite index of rice blast,the compliance rate of the varieties was 94.9%,and the disease resistance rate(including highly resistant,resistant,and moderately resistant varieties)was 57.1%.Based on the highest disease grade of panicle blast loss rate,the compliance rate was 92.9%,and the disease resistance rate was 67.4%.According to the composite index of rice blast,the resistance levels of different types of rice varieties de-creased as follows:single-season hybrid indica-japonica rice＞early indica rice＞single-season hybrid indica rice＞continuous cropping hybrid late indica rice＞single-season late japonica rice＞continuous cropping late japonica rice.关键词
水稻品种/稻瘟病/抗性/浙江省/区域试验Key words
rice variety/rice blast/resistance/Zhejiang Province/regional trial分类
农业科技引用本文复制引用
郝中娜,邱海萍,柴荣耀,韩展誉,张震,王艳丽,王教瑜,刘鑫..浙江省2014-2023年区域试验中水稻品种的稻瘟病抗性分析[J].浙江农业学报,2025,37(12):2449-2457,9.基金项目
浙江省农业农村现代化先行资金项目(2014-2023年) （2014-2023年）
浙江省"十四五"水稻新品种选育重大科技专项(2021C02063-3) （2021C02063-3）
