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中文摘要：
在筛选氮素利用高效茄子自交系的基础上,利用G riffing-Ⅱ设计,在两个氮素水平下（450kg/hm2和不施氮）分析了7个茄子自交系氮素利用效率相关性状的配合力。结果表明,两个氮素水平下,氮效率受加性效应和非加性效应的共同控制;氮素吸收总量和氮素利用效率则以加性遗传为主。氮高效育种中,自交系609和749在两个氮素水平下均有较高的氮效率一般配合力。与高氮处理相比,低氮条件下氮素利用效率相关性状的广义遗传力有所增大,而狭义遗传力多为递减趋势。
英文摘要：
Based on the selected eggplant inbred lines with different nitrogen use efficiency（NUE）,the combination ability was analyzed with 7 inbred lines under high nitrogen（450kg/hm2）and low nitrogen（no N）by Griffing-II design.The results showed that at two N levels NUE was controlled by additative and non-additative effect,and total N and N utilization efficiency（NUtE）were controlled mostly by additative effect.609 and 749 inbred lines had higher general combining ability of NUE at two N levels.Under low N stress,the broad-sense heritability of characters on NUE increased while the narrow-sense heritability decreased.
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