南繁玉米自交系性状的变化规律探讨

Approach on the Changeable Pattern of Maize Inbred Line Planted in Hainan Island

分析了玉米自交系在海南三亚及黑龙江齐齐哈尔两个不同生态条件下,某些性状的变化规律。结果表明,子粒类型、穗行数两个性状稳定,不随环境的变化而改变。穗长、行粒数虽然发生变化,但变化幅度较小。生育期、株高、穗位、雄穗分枝数、植株叶片数等性状在南方的变化与北方呈显著正相关。相关系数在0.804～0.913之间,均达到0.01水平显著。

In this article, the changeable pattern about some characters of maize inbred line was analyzed which planted in both different ecological environment regions of Sanya and Qiqihar. The result showed that the characters of grain type and row number per ear were not change with the change of environment. The characters of ear length and grain number per row have a little changed. The variation about characters of growth duration, plant height, ear height, branch number per tassel,leaf blade number per plant and so on had significant positive correlation, the correlation coefficient was between 0. 804 and 0. 913, and it reached to the significant level (p<0. 01).