论文部分内容阅读
The multiple traits of size,amount,DNA content of chloroplast were analyzed with 7 triploid populus tomentasa clones and 3 diploid populus tomentasa clones from different hybrid parents.This study revealed that the most triploid Populus clones are not marked different from their parents on chloroplast size,while their chloroplast number clearly increase with chromosome doubling.For the more,the triploid populus tomentasa clones from female gamete doubling reach the most significant level.