摘要
采用灰色系统理论关联度法对贵州大学油料所的14份双低油菜种质资源主要经济性状进行灰色关联度分析。结果表明,不同的双低油菜材料同一经济性状与产量的关联度不同;同一材料内的不同经济性状与产量的关联度也不同。其关联度顺序为:每角粒数(γ=0.709 8)>千粒重(γ=0.684 1)>角果长(γ=0.647 7)>株高(γ=0.645 7)>单株角果数(γ=0.641 9)>二次分枝数(γ=0.637 0)>分枝高度(γ=0.636 7)>一次分枝数(γ=0.623 9)。因而,在双低油菜的选育过程中,应加强对每角粒数、千粒重和角果长的选择,同时考虑株高适度及单株角果数。
By using the way of grey correlation degree the main economic characters of 14 double-low rape were analysed. The results showed that there was different correlation degree between different economic characters and yields in the same combinations. The correlation degree order was seeds/pod（ γ= 0. 709 8） 〉 1 000 - GW （γ= 0. 684 1 ） 〉 length of pod（ γ= 0. 647 7 ） 〉 plant height （ γ= 0. 645 7 ） 〉 pods/plant （ γ= 0. 641 9 ） 〉 available primary branthes （ γ= 0. 637 0） 〉 position of branch（ γ=0. 636 7） 〉 available secondary branches（ γ=0. 623 9）. Selecting the combination of double-low rape, more seeds/pod, heavier 1 000 -GW,longer length of pod, the proper plant height and more pods/plant were noticed.
出处
《山地农业生物学报》
2007年第3期189-192,共4页
Journal of Mountain Agriculture and Biology
关键词
双低油菜
灰色系统
灰色关联度
经济性状
产量
double-low rape
grey systems
grey related degree
economic characters
yield
