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研究了７ 个 Ｃ Ｉ Ｍ Ｍ Ｙ Ｔ玉米种质群体在四川生态环境下主要农艺性状的遗传变异和光周期敏感性。结果表明，参试的７ 个 Ｃ Ｉ Ｍ Ｍ Ｙ Ｔ玉米种质的主要农艺性状在群体间存在极显著的差异，在群体内存在极为丰富的遗传变异；墨白９６１、墨白９６２和墨白９６３ 属光周期敏感型种质。墨白９６８ 属中度光周期敏感型种质， 墨白９６４ 和墨白９６６ 较适合于四川生态条件， 墨白９６７ 虽然抽丝、成熟均最早且无明显的光周期反应， 但由于其综合性状表现不佳， 没有利用价值。
The genetic variation and photoperiod sensitivity of the main agronomic traits of seven C I M M Y T maize germplasms in Sichuan ecological environment were studied. The results showed that the main agronomic traits of the seven C I M M Y T maize germplasms tested showed extremely significant differences among the populations, and there were extremely rich genetic variations in the populations. Moai 961, Mo Bai 962 and Mo Bai 963 photoperiod sensitive germplasm. Mohs 968 were moderately photoperiod-sensitive germplasms. Mohs 964 and Mohs 966 were more suitable for ecological conditions in Sichuan Province. Mohs 967 was the earliest and had no obvious photoperiodic response. However, due to its general characteristics Poor performance, no use of value.