杂交水稻2026，Vol.41Issue(4)：35-41,7.DOI:10.16267/j.cnki.1005-3956.20250804.157
2014-2023年长江中下游国家统一试验审定中稻品种概况和相关性状分析
Analysis on General Situation and Related Traits of Middle-season Rice Varieties Approved Through National Unified Trials in the Middle and Lower Reaches of the Yangtze River from 2014 to 2023
杨通洲 1曾雅婷 1王小凤 1杨西华 1曹梦祥 1王凯 1周志智 1王莹芳1
作者信息
- 1. 益阳市农业科学院,湖南 益阳 413046
- 折叠
摘要
Abstract
Taking middle-season rice varieties approved through national unified trials in the middle and lower reaches of the Yangtze River from 2014 to 2023 as research objects,this study analyzed their annual numbers and types,parental applications,yields,yield-related traits,trait correlations,grain quality,and rice blast resistance.The results showed that a total of 174 middle-season rice varieties were approved in the 10-year period,including 149 two-line hybrid rice varieties and 25 three-line hybrid rice varieties.A total of 83 male sterile lines(11 three-line male sterile lines and 72 two-line male sterile lines)and 153 restorer lines were utilized.Among three-line male sterile lines,the number of approved middle-season rice varieties bred with Quan 9311A was the largest,reaching 13.Among two-line male sterile lines,the number of approved middle-season rice varieties bred with Y58S was the largest,reaching 16.Among restorer lines,the number of approved middle-season rice varieties bred with Huazhan was the largest,reaching 4.Over the 10 years,the middle-season rice varieties generally showed an firstly increasing with fluctuations and then stable trend in the yield and a slow shortening trend in growth period.The plant height and panicle length remained relatively stable,while the number of effective panicles and 1 000-grain weight fluctuated to some extent across different years.The number of total spikelets per panicle,number of filled spikelets per panicle,and seed setting rate were improved.The yield had extremely significantly positive correlations with the number of total spikelets per panicle and the number of filled spikelets per panicle.It was positively correlated with the growth period and seed setting rate,and negatively correlated with the plant height,panicle length,number of effective panicles,and 1 000-grain weight.The high-quality number of approved middle-season rice varieties increased to a certain extent,and rice blast resistance was markedly enhanced during the decade.关键词
杂交水稻/长江中下游/中稻品种/产量/品质/抗性Key words
hybrid rice/middle and lower reaches of the Yangtze River/middle-season rice variety/yield/grain quality/resistance分类
农业科技引用本文复制引用
杨通洲,曾雅婷,王小凤,杨西华,曹梦祥,王凯,周志智,王莹芳..2014-2023年长江中下游国家统一试验审定中稻品种概况和相关性状分析[J].杂交水稻,2026,41(4):35-41,7.
