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以2份白菜型油菜为对照,用SRAP标记研究了57份甘蓝型油菜黄籽高油育种资源的遗传关系。在遗传相似系数0.682处,可将59份材料分为3类:两份白菜型油菜聚为一类;甘蓝型油菜除选系Y58单独聚为一类外,其他所有选系归为另一类,显示黄籽高油育种资源遗传基础较窄。在遗传相似性系数0.738处,又可将57份甘蓝型油菜分为6个亚类,其中53份材料归为两个大的亚类,系谱或亲缘关系较近的材料一般聚在同一亚类,且按系谱关系比地理来源划分明显,提示地理来源配制强优势黄籽高油杂交组合可靠性可能不如按系谱来源。
The genetic relationship of 57 high - yielding breeding resources of Brassica napus L. was studied by using SRAP markers with 2 Chinese cabbage rape as control. At genetic similarity coefficient of 0.682, 59 materials could be divided into three categories: two cabbage rape clustered into one group; the Brassica napus except the selected line Y58 clustered into one group, while the other selected lines belong to the other category , Showing that the genetic basis of breeding resources of yellow-seed high oil is narrow. At the genetic similarity coefficient of 0.738, 57 rapeseed (Brassica napus) cultivars could be divided into six subtypes, of which 53 were grouped into two major subgroups and the pedigree or relatives were generally clustered in the same subgroup , Which was obviously divided by geographical origin than that by pedigree, suggesting that the reliability of the combination of strong yellowing and high-oil potential derived from geographical sources may not be as reliable as that of pedigree.