甘蓝型油菜多胚现象初步研究  

A PRELIMINARY STUDY OF POLYEMBRYONY IN BRASSICA NAPUS L.

作　　者：范志忠[1] 于德日[1] 

机构地区：[1]四川联合大学生物系植物遗传研究室,湖南省作物研究所

出　　处：《中国油料》1996年第3期30-32,共3页

摘　　要：在所观察的７１６份资源中．除个别外，多胚苗出现的频率很低。多胚苗可以分成５种类型：Ⅰ型，单胚有独立的根茎叶。Ⅱ型，单胚之间有共同的根系，但各有独立的子叶、真叶和茎。Ⅲ型，单胚之间有共同的根系和子叶．但没有共同的真叶和茎。Ⅳ型，单胚之间有共同的根系、子叶和部分真叶，但茎基部不联合。Ⅴ型，单胚之间有共同的根系、子叶和部分真叶，且茎基部联合。幼苗子叶数目与出现多胚苗的频率及多胚苗的类型密切相关。In the 716 lines or cultivars (Brassica napus L. ) investigated. polyembryonicseedlings were observed only in 46. All polyemhryonic seedlings observed could he dividedinto 5 groups. In group Ⅰ .plantlets of a polyembryonic seedling were independent, of eachother, each plantlet had its own root. cotyledons. leaves and stem. In groupⅡ, plantletsshared a root, but each had its own cotyledons, leaves and stem. In groupⅢ, plantletsshared a root, cotyledons, but each had its own leaves and stem. In group Ⅳ, plantletsshared a root, colyledons and several leaves, but their stems separated. In group Ⅴ,Plantlets shared a root. cotyledons and some leaves, and their stems combined in the lowpart. Number of seedling's cotyledon was correlated with frequency and the group ofpolyembryonic plant.

关 键 词：甘蓝型油菜 多胚现象 子叶 

分 类 号：S565.401[农业科学—作物学]