油菜“两优586”产量构成因素与产量的通径分析

The Correlation and Path Analysis on Yield Compositions and the Yield of Rapeseed "Liangyou 586

相关分析和通径分析结果表明 ,“两优 5 86”油菜的产量构成因素中 ,单位面积有效角果数对产量的作用最大 ,每角粒数对产量的作用次之 ,千粒重对产量的作用最小。单位面积有效角果数、每角粒数、千粒重决定产量变异的 97.79%。“两优5 86”丰产 (2 0 17.79～ 2 2 73 .40kg/hm2 )的产量结构为 :单位面积有效角果数 493 7.86万 /hm2 ± 85 8.0 6万 /hm2 ,每角粒数 2 0 .5 0粒± 0 .2 2粒 ,千粒重 4.0 9g± 0 .0 2g。

The correlation and path analysis showed that number of pods had the greatest effect on the yield of 'Liangyou 586',seeds per pod was second,1 000-seeds weight was little effect on the yield.The yield composition such as number of pods,seeds per pod and 1000-seeds weight decided the variation of 97.79% yield.For high yield (2 017.79～2 273.40kg/hm 2),number of pods,seeds per pod and 1 000-seeds weight of 'Liangyou 586' should be (2 017.79～2 273.40 kg/hm 2):4 937.86±858.06 kg/hm 2,20.50±0.22 and 4.09±0.02 g respectively.