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中文摘要：
作者评估了在强调干旱、浇得好的条件下面为干旱忍耐在西南中国传播的玉米混血儿的 57 父母近交系。在谷物的容忍的系数每植物产出的干旱之间的多重回归分析并且 15 词法并且从 12 的一个子集测量的生理性状选择了线，识别特点 1 和 5，它为干旱忍耐是重要的，在幼苗和生殖生长期分别地。这些特点的基因效果，联合能力，和可遗传性用产生平均数和 diallel 方法被估计。优势效果比为植物高度，开花期丝绸间隔(ASI ) ，根重量，和谷物的加性效果每植物让步是更重要的，而，他们关于为出叶速度的平等者。能力(SCA ) 在附近是的特殊联合的变化每植物为植物高度， ASI 和谷物产量加倍一般联合能力(GCA ) 的，尽管他们关于为出叶速度和根重量的平等者。为生殖生长期的五个特点的狭窄的感觉可遗传性不高(12.8 29.6%) 尽管女人为植物高度， ASI，和谷物察觉到可遗传性，产量高象一样 70 85% 。由 183 F2 组成的一张分离人口从生气 N87 1 种(干旱容忍) × 9526 (易受影响) ，是在 103 SSR loci 的 genotyped， F2:4 家庭在二水政体下面被评估。12 量的特点 loci (QTL )( 二为植物高度，五为 ASI，四为为谷物的根生物资源，和生物资源让步) 被识别其大多数在显性基因行动上有。一些 chromosomal 区域例如连接到标记 umc1051 (箱 4.08 ) 的那些， umc2881 (箱 4.03 ) ，和 phi034 (箱 7.02 ) ，重叠有 QTL。
英文摘要：
The authors evaluated 57 parental inbred lines of maize hybrids disseminated in Southwest China for drought tolerance under drought-stressed and well-watered conditions. Multiple regression analyses between drought tolerant coefficients of the grain yield per plant and 15 morphological and physiological traits measured from a subset of 12 selected lines, identified traits 1 and 5, which were important for drought tolerance, at the seedling and reproductive stages respectively. Gene effects, combining abilities, and heritabilities of these traits were estimated using generation mean and diallel cross methods. Dominance effect was more important than additive effect for the plant height, anthesis-silking interval （ASI）, root weight, and the grain yield per plant, whereas, they were about equal for the leaf emergence rate. The variances of special combining ability （SCA） were about double that of the general combining ability （GCA） for plant height, ASI and grain yield per plant, although they were about equal for leaf emergence rate and root weight. Narrow sense heritabilities of the five traits for the reproductive stage were not high （12.8-29.6%）, although broad sense heritabilities for plant height, ASI, and grain yield were as high as 70-85%. A segregating population consisting of 183 F2 plants from the cross N87-1 （drought tolerant） × 9526 （susceptible）, was genotyped at 103 SSR loci and the F2：4 families were evaluated under two water regimes. Twelve quantitative trait loci （QTLs） （two for plant height, five for ASI, four for root biomass, and one for grain yield） were identified, most of which had overdominant gene action. Some chromosomal regions, such as those linked to markers umcl051 （bin 4.08）, umc2881 （bin 4.03）, and phi034 （bin 7.02）, had overlapping QTLs.
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