中国油料作物学报2019，Vol.41Issue(1)：33-39,7.DOI:10.7505/j.issn.1007-9084.2019.01.005
基于结构方程模型的油菜性状和产量关系研究
Relationships between traits and yields of rapeseed based on the structural equation modeling
摘要
Abstract
To quantitively describe and analyze the influences of adjustment of planting structure and change of main traits on the yield of rapeseed (Brassica napus L.), we studied and analyzed the data of a variety selection experiment, which included 168 sets of data of yields and other traits in 10 continuous years (2007-2016), with the structure equation model (SEM). A significance analysis was also conducted on the relative traits and yields of rapeseed under different densities investigated in this study. The result showed that yield per plant reduced significantly with the increase of planting density. Yield per plant was mainly influenced by the number of effective pods per plant. However, the total yield increased with the increase of planting density. The traits investigated in this study showed different levels of total effects on yield per plant as: effective pods per plant＞ branches＞ 1000-kernel dry weight＞ effective pods of main inflorescence＞ effective length of main inflorescence＞ seeds per pod. Thus, in order to increase the total yield of rapeseed, we should cultivate cultivars that are more density tolerant and suitable for their environmental suitable. At the same time, rapeseed cultivars with more effective pods and branches per plant should be bred to stabilize the total yield.关键词
油菜/产量/性状/种植密度/结构方程模型/单株有效角果数Key words
rapeseed/yield/traits/planting density/structural equation model/effective pod per plant分类
农业科技引用本文复制引用
毛鑫,杨建利,周翔,王乃江,姬祥祥,冯浩,何建强..基于结构方程模型的油菜性状和产量关系研究[J].中国油料作物学报,2019,41(1):33-39,7.基金项目
黄土高原土壤侵蚀与旱地农业国家重点实验室开放基金 (A314021402-1611) （A314021402-1611）
陕西省重点研发计划:陕南油菜全程机械化生产技术集成与示范 (2017-ZDXM-NY-007) （2017-ZDXM-NY-007）
陕西省科技统筹创新工程计划项目 (2016KTZDNY03-06) （2016KTZDNY03-06）
高等学校学科创新引智计划 (No.B12007) （No.B12007）
国家重点研发计划专项 (2016YFCO501703) （2016YFCO501703）
