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选取 8个甘蔗基因型研究苗期一些生理性状与蔗汁糖分和产量关系 .结果表明 ,苗期的相对生长率 (RGR)与净同化率 (NAR)间呈显著正相关 (0 .96 ) ,RGR、NAR与蔗汁糖分均呈负相关 ,与蔗茎产量均呈正相关 .通径分析结果表明NAR对蔗汁糖分和蔗茎产量均为直接正向贡献 .研究结果认为 ,甘蔗苗期有较高的NAR、叶面积比率 (LAR)和叶绿素a/b值 ,可作为苗期进行高产高糖性状间接选择的指标
The results showed that there was a significant positive correlation between relative growth rate (RGR) and net assimilation rate (NAR) at the seedling stage (0.96) RGR and NAR were negatively correlated with sugar content of cane juice and positive correlation with cane yield.The results of path analysis showed that NAR had a direct and direct contribution to sugar cane yield and sugar cane yield.The results showed that sugar cane High NAR, leaf area ratio (LAR) and chlorophyll a / b can be used as indicators of indirect selection of high-yield and high-sugar traits at seedling stage