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以高茎糖玉米自交系7801、25098、7208,25074、W08作为试验材料,测定玉米自交系授粉后不同时期茎秆汁液的糖锤度、茎秆总含糖量、叶片光合速率及对应的子粒经济产量,分析其相互之间的关系及变化规律。结果表明,对茎秆含糖量起决定作用的主要为锤度和产量2个性状,其中,锤度与茎秆含糖量相关性达极显著水平,产量与茎秆含糖量呈负相关关系。偏相关分析表明,单株粒重与锤度呈正相关关系,说明茎秆含糖量的提高对玉米产量有促进作用。
The high stems and sugar corn inbred lines 7801, 25098, 7208, 25074 and W08 were used as test materials to measure the saccharomyces, the total sugar content of stems, photosynthetic rate Of the economic output of grain, analyze the relationship between them and changes in law. The results showed that there were two characters of stem diameter and yield, which were the decisive factors affecting the sugar content of stem. Among them, the correlation between brix and stem sugar content was extremely significant, and the yield was negatively correlated with the sugar content of stem relationship. Partial correlation analysis showed that there was a positive correlation between grain weight per unit weight and brix, indicating that the increase of sugar content in stem could promote corn yield.