糖甜菜多倍体类型细胞遗传学的研究——第一章 糖甜菜四倍体植株的细胞学特性和结实率

• 作 者: B.E.Бopмoтoв 李山源 郭德栋
• 出 处: 甜菜糖业
• 发表日期: 1984年S1期
• 关键词: 甜菜种子 四倍体植株 细胞学特性 花粉粒 同源四倍体 减数分裂 单价体 四价体 同源多倍体 非整倍体

实验获得多倍体的主要缺点,是种子结实率下降,严重限制了其在改良栽培植物中的利用。除营养繁殖类型之外,同源多倍体的这个特性,也是其在育种研究中的严重障碍。甚至栽培植物不是专门为种子用,而只为了利用其营养器官(块根、饲料牧草)时,这种状况也

The main disadvantage of obtaining polyploidy from experiments is the reduction of seed setting rate, which severely limits its utilization in improved cultivated plants. In addition to the types of vegetative propagation, this feature of homologous polypodies is a serious obstacle in breeding research. Even the cultivated plants are not exclusively for seeds but only for the utilization of their vegetative organs (tuber, forage grasses)