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本文应用灰色关联度分析方法 ,对热带亚热带玉米与温带玉米杂交F1代 15个主要性状对单株产量的影响进行了分析。结果表明 :单株产量与各性状关联度大小依次为单株穗重r2 >百粒重r3>粒行数r5>行粒数r4 >穗粗r7>穗位叶叶绿素含量r15>穗长r6>株高r8>播种—散粉期天数r13>穗位高r9>播种—抽丝期天数r12 >穗位叶丙二醛含量r16>单株叶面积r10 >茎秆韧皮强度r11>散粉—抽丝期间隔天数r14 。与产量形成有密切关系的性状是 :穗位叶叶绿素含量、株高、播种—散粉期天数、播种—抽丝期天数、穗位高和单株叶面积。
In this paper, the gray relational analysis method was used to analyze the effects of 15 main characters of F1 hybrid between tropical and subtropical maize and temperate maize on per plant yield. The results showed that the correlations between yield per plant and each trait were as follows: ear weight per plant r2> grain weight r3> grain number r5> grain number r4> ear diameter r7> leaf chlorophyll content r15> ear length r6> Plant height r8> Sowing - sowing days r13> ear height r9> sowing - sowing days r12> leaf position leaf malondialdehyde content r16> leaf area per plant r10> stalk bark strength r11> loose powder - spinning Days after interval r14. The traits closely related to the yield formation were chlorophyll content, plant height, days of sowing - sowing, sowing - sowing days, ear height and leaf area per plant.