【摘要】 运用灰色系统理论中的关联度分析法 ,对 6个菜心杂交一代品种的 8个主要性状与单株产量的关联度进行了分析。结果表明 ,菜心杂交一代品种产量与主要性状的关联度为 :株高 0 .6 776、叶柄及叶长 0 .72 5 1、最大叶宽 0 .6 0 6 9、茎粗 0 .71 6 2、根重0 .5 72 5、叶柄及叶重 0 .72 0 0、茎薹重 0 .41 94、叶片数 0 .6 896 ;关联序为 :叶柄及叶长 >叶柄及叶重 >茎粗 >叶片数 >株高 >最大叶宽 >根重 >茎薹重 ;各性状的灰色权重为W1 ∶W2 ∶W3∶W4∶W5∶W6∶W7∶W8=0 .1 32∶0 .1 41∶0 .1 1 8∶0 .1 40∶0 .1 1 2∶0 .1 40∶0 .0 82∶0 .1 34。更多还原

【Abstract】 Based on the theory of gray relational system, the analysis was made between the eight main characters and six （hybrids） of flowering-Chinese cabbage. The results showed that the relational grade between the yield and each character was as （follows）: plant height 0.6776, petiole and leaves’ length 0.7251, width of the biggest leaves 0.6069, thickness of stem 0.7162, weight of root 0.5725, petiole and leaves’ weight 0.7200, weight of stem 0.4194, the number of leaves 0.6896, the relational order is: petiole and leaves’ length>petiole and leaves’ weight >thickness of stem >the number of leaves>plant height>width of the biggest leaves>weight of root>weight of stem; the gray relational weight of each character is: W₁∶W₂∶W₃∶W₄∶W₅∶W₆∶W₇∶W₈=0.132∶0.141∶0.118∶0.140∶0.112∶0.140∶0.082∶0.134.更多还原