摘要： 在同一年份区试中,玉米杂种间两种稳产性参数有相当大的差异;在不同年份区试中,有的杂交种两种稳产性参数无明显差异,有的则差异很大,说明这些杂交种在不同年份、气候和环境条件下有不同的稳产性和适应性.杂交种通过连续三年区试之后,才能更好的评价其稳产性.杂交种的平均产量与其稳产性参数间的相关系数不显著(r(?)=0.0612,r(?)=-0.2933).杂交种稳产性与主要农艺性状特别是果穗性状变化相关联.在作物品种区域化试验中,这一分析方法似乎是育种工作者研究品种产量稳定性和适应性的一个有效工具.

关键词: 春播, 玉米杂交种

Abstract: This study was carried out in Shanxi province from 1983 till 1985. The results are summarized as follow:The values of two yield stability parameters among some hybrids of maize were considerably different in the regional test of the same year; those of the two yield stability parameters of the other hybrids were either significantly or not significantly different in the regional tests for different years, showing that in different years, under different climate and environmental conditions, these hybrids have different yield stabilities and adaptabilities. The experiment proves that only after the regional test, for three consecutive years can the yield stability of new hybrids be more precisely evaluated.This experiment suggests that the correlation coefficients between mean, yields and stability parameters were nonsignificant (rx-·b = 0.0612, r-x ·r2 = -0.2933) . The hybrid yield stability was found associated with the changes of the major agronomic characteristics, especially of the ear characterestics. Among these hybrids, Tai Dan Zao N0.3 was found in the three-year regional test to be a high-yield, stable, and widely adaptable species.This analysis method seems to be an effective tool for breeders to use in studying varietal yield stability and adaptability in the crop variety regional test

Key words: Spring—seeding, Maize hybrids