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- Title
基于结构方程模型的油菜性状和产量关系研究.
- Authors
毛鑫; 杨建利; 周翔; 王乃江; 姬祥祥; 冯浩; 何建强
- 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.
- Publication
Chinese Journal of Oil Crop Sciences, 2019, Vol 41, Issue 1, p33
- ISSN
1007-9084
- Publication type
Academic Journal
- DOI
10.7505/j.issn.1007-9084.2019.01.005