中熟玉米新品种产量稳定性分析

STABILITY ANALYSIS FOR YIELDS OF MIDDLE MATURING HYBRIDS IN MAIZE

本文对中熟玉米新品种区域试验产量结果进行了联合方差分析,并在此基础上,按指定的效应模型,对诸品种的品种主效,地点主效品种×地点互作效应进行了多重复比较和系统的分析。结果认为,各试验地点的自然环境条件和生产水平存在显著差异;各参试品种遗传型与不同的环境存在互作效应大小;参试品种间不但丰产性不同,而且在与地点的互作方面还存在真实差异。

The yielas of hybrids in regional tests over environments were compited for the combined analysis of variance. Then the major effects of hybrids. locals and interactions of hybrids and locals were compared in test of signifn cance for differences and analysed systemally by given madel. The experimetal results suggested that there were significant differences over all test locals in netural environments, production, conditions and productive levels. Interactions of the genetypes and the envirorments existed and those of hybrids V_8(465×1653)、V_9(430×903) and V_6(2233-5×1588) were note important, while others seemed to be important. The differeces existed in yield traits among the hybrids and intcractions of hybrids and locals sigrificantly were different. Yields of V_7 (Ji818×1544) and V_8 surpassed significantly those of control and others. Hybrid V_7 had high yielding traits but stability for yield was nos as good as V_8、V_9 and V_6, bacause its interaction Variance and coefficent of Varation were large. Yield traits of V_7 was not as good as V_8. Hybrid V_8 was the best in the tesfs. For yield it had good traits and its major effect was large, and its interaction Variance and coefficent of Variation was small. so V_8 would suit more environments with high and stable yield.