甘蔗亲本间遗传距离的测定及其与杂种后代主要经济性状的关系

• 作 者: 李奇伟
• 机 构: 轻工业部甘蔗糖业科学研究所,
• 出 处: 甘蔗糖业
• 发表日期: 2004年期
• 关键词: 遗传距离 甘蔗 有性世代 茎径 无性世代 主要经济性状 亲本选配 锤度 杂种后代 杂种

在本研究中,测定了7个甘蔗亲本间的两种遗传距离,并研究了这两种遗传距离和杂种主要经济性状的相关,主要结果是:无性世代遗传距离和杂种茎径有显著正相关;有性世代遗传距离和杂种茎径、丛重、丛重×锤度有显著正相关。因此,建议把有性世代遗传距离作为亲本选配的重要指标。

In this study, two genetic distances between seven sugarcane parents were determined and the correlation between these two genetic distances and the major economic traits of hybrids was studied. The main results were: A significant positive correlation was found between the genetic distance of clonal generations and the hybrid stem diameter There was a significant positive correlation between the genetic distance of the sexual generation and the stem diameter, plexus weight and plexus weight. Therefore, it is suggested that the genetic generation of genetic distance as an important indicator of parental matching.