摘薹对“油蔬两用”油菜经济性状与产量的影响

Effects of Stalk Picking on Economic Characteristics and Yield of Oilseed and Vegetable Rape

为探究“油蔬两用”油菜在摘薹后各经济性状及产量的变化规律和相关性,采用灰色关联度分析法对21个油菜品系的16个经济性状进行比较分析。结果表明,摘薹后油菜产量与经济性状之间的关联度表现为每角粒数>角果长>根长>角果层PAR截获率>有效分枝高度>千粒重>二次分枝角果数>角果宽>单株角果数>果皮厚>一次分枝角果数>一次有效分枝数>二次有效分枝数>茎粗>分枝层PAR截获率>株高。因此,在“油蔬两用”油菜地方品种选育中,应综合考虑各性状,注重选择每角粒数较多、角果较长、根系较长且角果层PAR截获率较高的品种。

In order to explore the change rule and correlation of economic characteristics and yield of rape for oilseed and vegetable after stalk picking,16 economic characteristics of 21 rapeseed lines were compared and analyzed by grey correlation degree analysis.The results showed that the correlation degree between rapeseed yield and economic characteristics were seeds per pod>pod length>root length>PAR interception rate of pod layer>effective branch height>1000-seed weight>2nd effective branches per plant>pod width>pods per plant>pericarp thickness>siliques of 1st branch>1st effective branches per plant>2nd effective branches per plant>stem diameter>PAR interception rate of branch layer>plant height.Therefore,in the selection process of local rape varieties for oilseed and vegetable rape,it was necessary to comprehensively consider each characteristic,and the selection of varieties with more seeds per pod,longer pod,longer root and higher PAR interception rate of pod layer.