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以正常胞质的湘农甜玉2号和不育胞质的C型湘农甜玉2号为研究对象,探讨不同胞质效应的甜玉米子粒在授粉后不同天数可溶性糖积累规律及其与淀粉含量等的变化关系。结果表明,不同胞质类型的甜玉米子粒在授粉后30 d时可溶性糖含量均达最大值,且不育胞质C型湘农甜玉2号的子粒糖含量比正常胞质湘农甜玉2号高1个百分点;湘农甜玉2号子粒可溶性蛋白含量高于C型湘农甜玉2号子粒0.2 mg/g;不育胞质的甜玉米子粒总淀粉含量比正常胞质的子粒淀粉含量高2%。两种类型的甜玉米子粒可溶性糖、可溶性蛋白、可溶性固形物与子粒总淀粉含量在授粉第30 d时呈显著负相关和极显著负相关。
Using the normal cytoplasm of Xiangnongtianyu 2 and sterile cytoplasm C Xiangnongtianyu 2 as the object of study, the accumulation of soluble sugar in sweet maize seeds with different cytoplasmic effects at different days after pollination Starch content and other changes in the relationship. The results showed that the content of soluble sugar reached the maximum at 30 days after pollination in sweet maize kernels with different cytoplasm types, and the content of cotyledons sugar of CMS type C Xiangnongtianyu 2 was higher than that of normal cytoplasm Xiangnong sweet jade 2 and 1% higher than that of the normal cytoplasm. The content of soluble protein of Xiangnong Tianyu 2 grain was higher than that of the C Xiangnong Tianyu 2 grain 0.2mg / g. The content of total starch of the sweet maize kernels was higher than that of the normal cytoplasm Starch content of 2%. The contents of soluble sugar, soluble protein, soluble solids and total starch of two types of sweet corn were negatively and significantly negatively correlated at the 30th day of pollination.