摘要： 不同生态区、不同播期及不同海拔高度处理,子粒的各种生化指标存在差异。不同生态区的绿叶持续期差异较大,新疆的绿叶面积较山东长812d,且成熟期绿叶数也比山东多出56片。叶绿体色素总量随海拔高度增加而增加。不同播期处理,果穗叶硝酸还原酶活性表现为较早播期处理高于较晚播期,不同品种具有相同的变化规律。不同品种间,YD22>HO115>Sc704。子粒中各种与活性氧代谢有关物质含量也存在差异,随播期推迟和海拔高度增加,SOD、MDA活性逐渐增加,CAT活性逐渐降低,而POD活性随着播期推迟而降低,随海拔高度升高而升高。

关键词: 生态因素, 玉米, 子粒品质

Abstract: Seed physiology and chemistry indexes have discrepancy in different ecological districts, in differ- ent planting times, and in different altitudes. The green leaves lasting days have different in different ecological districts, Xinjiang is longer 8-12 days than Shandong, and the green leaf number is more 5-6 pieces than Shandong. The total chlorophyll is increasing with the altitude raising. The ear leaf NR activity is stronger in early planting than in later, different varieties have the same change, the showing is YD22> HO115> Sc704. The enzyme relation to active oxygen metabolism in seed has discrepancy. With the planting time delaying and the height ascending, SOD and MDA activity is increasing, CAT activity is decreasing, POD activity is higher in early planting time and higher height.

Key words: Ecological factors, Maize ( Zea mays L), Seed quality

中图分类号: 

• S513