Genetic relationship of rapeseed yield-related traits revealed by elite lines under multiple environments  

作　　者：Hui WANG Qiong HU Jun WANG Yunchang LI Li FU Jia LIU Zhongfen WEI Wenxiang WANG Desheng MEI 

机构地区：[1]Oil Crops Research Institute of Chinese Academy of Agricultural Sciences / Key Laboratory for Biological Sciences and Genetic Improvement of Oil Crops, Ministry of Agriculture, Wuhan 430062, P. R. China [2]Oil Crops Research Institute of Guizhou Province, Guiyang 550006, P. R. China [3]Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, P. R. China

出　　处：《Oil Crop Science》2016年第2期26-34,共9页中国油料作物学报(英文版）

基　　金：This research was supported by the National Basic Research Program of China （ 973 Program, 2011CB109302）；the National High - Tech R＆D Pro-gram of China （863 Program, 2011AA10A104, 2012AA101107） ； Natural Science Foundation of Hu-bei Province （2015CFA103） ； Hubei Agricultural Science and Technology Innovation Center.

摘　　要：To provide a theoretical basis for further improvement of Brassica napus yield, additive dominance with additive - by - additive epistatic effects （ ADAA） genetic model and a 6 X 8 partial dial- lel cross design were used to analyze the genetic effects and correlations of five yield related traits of 14 excellent Brassica napus parental lines and their 46 and F2 populations. The results showed that silique density （SD） , siliques per plant （SPP） , seeds per silique （SPS） and thousand - seed weight （TSW） exhibited not only additive and dominant effects, but also significant epistatic effects. The dominant effects of all five yield - related traits were obviously greater than their additive effects and epistatic effects. Yield per plant （YPP） showed significant genetic correlation with SD, SPP and SPS, and the main component of the genetic correlation was the dominance correlation. SPP and SPS both showed a significant negative correlation with TSW. The SD of rapeseed was genetically correlated with all three components of yield to a certain extent, and there were different components of genetic effects positively correlated with the three yield components, indicating that SD is a potential trait to reconcile the conflict between TSW and SPP as well as SPS.

关 键 词：Brassica napus L. yield related traits correlation analysis genetic effects additive - dominance - epistatic genetic model interaction with environment 

分 类 号：S565.4[农业科学—作物学]