中国农业科技导报2025，Vol.27Issue(10)：42-50,9.DOI:10.13304/j.nykjdb.2024.0276
短生育期油菜农艺性状分析及品种选育
Analysis of Agronomic Traits and Variety Breeding of Rapeseed with Short Duration
摘要
Abstract
To breed short growth period rapeseed varieties,taking the early maturing and excellent breeding germplasm of Brassica napus L.as the research materials,11 main agronomic traits of 48 materials were analyzed and evaluated through methods including genetic diversity analysis,correlation analysis,regression analysis and principal component analysis under late sowing.The results showed that the genetic diversity index and coefficient of variation range of the 11 quantitative traits were relatively large,indicating that these materials had rich genetic information.Correlation analysis showed that the vegetative growth period,the pod growth period,the pods number per plant,the seeds number per pod,1 000 seeds weight and flowering duration were closely related to yield per plant.The regression equation for yield per plant was mainly significantly influenced by the pods number per plant,the seeds number per pod and 1 000 seeds weight,with a coefficient of determination of 0.852.The first two principal components extracted by principal component analysis had a cumulative contribution rate of 51.46%,representing most of agronomic traits.Principal component analysis divided 48 germplasm into 4 quadrants,and the first quadrant(Ⅰ)showed that materials with shorter flowering duration,longer vegetative growth period,and longer pod growth period could be used to breed early maturing,short growth period and high-yielding varieties.Above results provided a theoretical basis for the selection of parents and hybrid combinations of early maturing rapeseed with short growth period in the middle reaches of the Yangtze River.关键词
甘蓝型油菜/育种/生育期/早熟Key words
Brassica napus L./breeding/growth period/early maturity分类
农业科技引用本文复制引用
丁戈,李书宇,熊洁,宋来强,郑潇潇,张炳超,王雨文,陈伦林..短生育期油菜农艺性状分析及品种选育[J].中国农业科技导报,2025,27(10):42-50,9.基金项目
江西省农业科学院基础研究与人才培养项目(JXSNKYJCRC202410) （JXSNKYJCRC202410）
国家重点研发计划项目(2023YFD1201400) （2023YFD1201400）
国家油菜产业技术体系建设项目(CRAS-12) （CRAS-12）
油料作物遗传改良江西省重点实验室项目(2024SSY04031) （2024SSY04031）
江西现代农业科研协同创新专项(JXXTKYTJTS202501). （JXXTKYTJTS202501）
