玉米苗期抗旱性评价方法研究  

Evaluation method of drought-resistance of maize in seedling period

作　　者：毛建昌[1] 李向拓[1] 李发民[1] 杨金慧[1] 朱玉正 

机构地区：[1]西北农林科技大学农学院玉米研究所,陕西杨凌712100 [2]甘肃省永昌种子公司,甘肃永昌737200

出　　处：《干旱地区农业研究》2005年第4期155-158,共4页Agricultural Research in the Arid Areas

基　　金：农业部"引进国际先进农业科学技术"948项目(2003-Q03)

摘　　要：选用12个玉米自交系,采用NC设计组配32个杂交组合,在大田严重干旱条件下,调查了顶部展开叶片的卷曲宽度,提出了玉米苗期叶片卷曲度的计算公式和用叶片卷曲度评价玉米自交系和杂交种的方法,同时分析了12个自交系在苗期的抗旱性,自交系与杂交种抗旱性的相关系数为0.776,达到显著正相关。The experiment was conducted with 12 inbred lines and 32 hybrid crosses with NCII design to study the evaluation method of drought-resistance of maize in seedling period. Under the severe drought condition in the field, the rolling degree of the top extended leaf was investigated and the formula of leaf rolling degree was set up to evaluate the drought-resistance of inbred lines and hybrids. There was a significant positive relationship (r=0.776) between the drought-resistance of inbred lines and that of hybrids.

关 键 词：玉米 苗期 抗旱性 评价方法 

分 类 号：S513[农业科学—作物学]