麦类作物多胚的研究　Ⅲ.高原602双胚苗的细胞学类型  

Study on polyembryony in triticeae Ⅲ.Cytological types in biembryonic seedling of plateau 602

作　　者：冯海生[1] 陈集贤[1] 张怀刚[1] 李毅[1] 陈志国[1] 

机构地区：[1]中国科学院西北高原生物研究所,西宁810001

出　　处：《西北植物学报》1999年第4期669-672,共4页Acta Botanica Boreali-Occidentalia Sinica

摘　　要：对高原602双胚苗的细胞学进行了研究，有3种类型：2n－2n、2n－3n和2n－n，出现频率分别为0．16％、0．02％和0．02％。在2n－2n型里，又发现了形态上的差异，即2n（顶芒）－2n（长芒）。对单倍体育种和三倍体的起源进行了讨论。Cytological studies in biembryonic seedling of Plateau 602 were carried out.There were three types of cytology: 2n－2n, 2n－3n and 2n－n. Respective1y, their frequencies were 0.16%,0.02% and 0.02%. We found morphological difference in 2n－2n types,2n (top awn)－2n (long awn). The haploid breeding and the origin of triplont are discussed.

关 键 词：双胚苗 细胞学类型 麦类 单倍体育种 多倍体育种 

分 类 号：S512.035.1[农业科学—作物学]