| Abstract:Excellent tomato inbred lines are the basis of variety breeding,the important indexes of evaluating the breeding value of inbred lines are combining ability and heredity.In this study,56 combinations of 18 cherry tomato inbred lines were adopted by NC Ⅱ incomplete bi-serial hybridization,combining ability and heredity of 9 quantitative traits,such as the single inflorescence number,single fruit mass,vertical diameter,transverse diameter,fruit shape index,size of corky area around pedicel scar,hardness,soluble solids mass fraction,flesh thickness were analyzed.The results showed that the female parents 60021,60803,60805 and the male parents 60450 and 60849 were higher general combining ability,the combinations of 60283×60447 and 60803×60450 had the highest relative effect value of the special combining ability.All nine quantitative traits were controlled by additive gene effect,which could be passed on steadily to offspring.The single fruit mass,vertical diameter,size of corky area around pedicel scar and the flesh thickness had higher heredity,and less affected by the environment,and early selection will be effective.This study provides reference for the parents’ selection,dominant hybrid combinations preparation and varieties breeding of cherry tomato in Ningxia province. |
