甘蓝型油菜品质性状的配合力分析及低硫甙种质新开发的理论探讨  

Combining Ability Analysis for Quality Characters of Brassica napus and Possible Approaches of Obtaining New Germplasms of Low Glucosinolate Content

作　　者：胡中立[1] 刘后利[2] 

机构地区：[1]武汉大学生物系 [2]华中农业大学作物遗传育种研究所

出　　处：《作物学报》1989年第3期221-229,共9页Acta Agronomica Sinica

摘　　要：本研究以5个有代表性的甘蓝型油菜品种(系)进行双列杂交设计,采用 Griffing 方法1和2分别对其主要的品质性状含油量、硫甙总量和蛋白质含量进行了配合力分析,同时对这些性状的杂种优势和劣势问题进行了一些讨论。结果表明,含油量有少量的杂种优势可供利用,蛋白质含量表现为完全的杂种劣势,而控制硫甙总量的基因系统的显性效应较小,既无真正的杂种优势、亦无真正的杂种劣势出现。进一步,利用硫甙总量的双列杂交数据,将此性状视为质量性状进行了相应的遗传分析,据此,讨论了利用新的遗传种质资源,避免现有低硫种质同其它性状间的不良连锁与相关,从而达到由高硫甙品种选育低硫甙品种的可能性。The materials of the present study consisted of 5 typical breeding cultivars and com-plete and incomplete diallel crosses were undertaken.The combining ability of the impor-tant quality characters,viz.oil total glucosinolate and protein contents in seeds of rape(Brassica napus L.)were analysed according to the procedureⅠandⅡdiscribed byGriffing.The results indicated that there exists little positive heterosis for oil content,nega-tive heterosis for the protein content and no heterosis for the total glucosinolate content.The diallel data of the glucosinolate content used as a qualitative character were analysedas well.Finally,the possible approaches of obtaining the new genetical germplasms oflow glucosinolate by overcoming the linkage between the glucosinolate content and otherbad agronomic characters were also discussed,new lines with low glucosinolate contentwould probably be bred from the high glucosinolate content.

关 键 词：甘蓝型 油菜 品质性状 配合力 

分 类 号：S565.403.2[农业科学—作物学]