【摘要】 以不同品质类型春玉米为研究材料,研究其灌浆过程中功能叶片蔗糖代谢酶变化与蔗糖的关系及不同品种之间的区别。结果表明:在整个灌浆期功能叶片的蔗糖代谢酶都呈单峰曲线变化,蔗糖合成酶和磷酸蔗糖合成酶都影响着叶片中蔗糖的积累,使功能叶片中的蔗糖含量也呈单峰曲线变化。但不同品种之间又有着一定的差异:东农早甜中的蔗糖合成与磷酸蔗糖合成酶的关系比东农早粘、四单19要密切,而四单19在灌浆期功能叶片中的蔗糖含量与蔗糖合成酶的关系比东农早甜和东农早粘要密切。东农早粘与蔗糖合成酶和磷酸蔗糖合成酶都关系密切。但总体上,磷酸蔗糖合成酶在光合作用中起着主导作用。更多还原

【Abstract】 Using different quality spring maizes,the relation between the change of the sucrose metabolic enzyme of the function leaves at grain filling stage and the sucrose content was studied.The results(indicated):In the grain filling period,the trend of sucrose metabolic enzymes was a single peak curve,sucrose content in leaves was influenced by sucrose synthetase and sucrose phosphate synthetase.The trend of sucrose content also was single peak curve,but there were differences among varieties.The relationship of sucrose synthetose and the sucrose phosphate synthetase in Dongnongzaotian was more closer than that in Dongnongzaonian and Sidan 19,while the relation of Sidan19’s sucrose content of functional leaves at grain filling stage and sucrose synnthetase was closer than Dongnongzaotian and Dongnongzaonian,Generally speaking,scrose phosphate synthetase played a leading part in the photosynthesis.更多还原