稻穗内各粒位粒重及其种子活力研究

Study on the 1000-grain Weight and Seed Vigor at the Different Grain Positions in the Ear of Rice

通过对水稻常规品种中籼 898(Zhongxian898)稻穗内各粒位种子粒重及活力的系统研究 ,发现稻穗内各粒位间种子的粒重及活力具有显著差异 ,顶端优势现象明显 ,大中小三个粒区在稻穗内均呈“Λ”形分布 ,各粒位种子千粒重与种子活力存在正相关性 ,其直线方程为 y=5 .75 x- 72 .

The 1000 grain weight and seed vigor at the different grain positions in the ear of rice were studied .The results showed: there is significant difference in grain weight and seed vigor among the various grain positions, the top superiority is obvious, the big , middle and small grain areas presented 'Λ' arrange . There is positive correlation between the grain weight and the seed vigor, the imitated linear equation is y=5.75x-72.28.