加工番茄杂种优势群的划分和杂优模式利用研究

Study on Division of Processing Tomato Heterosis Group and Utilization of Heterosis Models

对番茄12个常用自交系采用不完全双列杂交配制组合66个,对亲本种质杂种优势群和杂交优势利用模式、配合力和性状遗传方式等进行综合分析和评价,根据血缘关系及聚类结果综合考虑,研究了亲本种质改良对育种效果的影响。结果表明:根据中亲优势值将亲本分成直立群、里格尔群、88-10群、K604群和W17群5个群,根据平均杂种优势值提出了88-10群×里格尔群、K604群×直立群、88-10群×W17群3种杂优主要利用模式。

66 mating combinations were prepared using 12 commonly inbred lines of tomatoes, and heterotic groups of parent germplasm and heterosis use model, combining ability and genetic were analyzed and evaluated. The impact of parent germplasm improvement on breeding effect was studied according to the phylogenetic relationship and clustering results. The results showed that parents could be divided into 5 groups： vertical groups, riegel groups, 88-10 groups, K604 groups and W17 groups on the basis of the value of the mid-parent heterosis. 88-10〈 riegel groups, K604〈 vertical groups, 88-10XW17 groups were the main use models of heterosis.