Relationship between soluble sugar contents and starch accumulation in grain during grain-filling stage in spring maize
2006
Wang Yanfang, Zhang Lijun, Fan Jinjuan
Chinese. 以田间种植的高淀粉(郑单19)、高油(通油1号)和普通型(吉单209)春玉米为材料,探讨不同类型玉米杂交种之间可溶性糖含量变化与淀粉积累的关系。从授粉后第7天开始,每隔7d选取果穗测定子粒的蔗糖、葡萄糖、果糖和淀粉含量。郑单19的淀粉含量在子粒灌浆的前期和后期都高于通油1号和吉单209;郑单19的蔗糖含量在前期较低,在后期较高,吉单209和通油1号的蔗糖含量变化趋势相似;在前期郑单19的葡萄糖含量高于其它两个杂交种,果糖含量显著高于蔗糖和葡萄糖含量;在前期和中期郑单19的果糖含量低于其它两个杂交种。结果表明,在子粒灌浆前期果糖的转化是淀粉积累的主要限制因素。
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