8个西瓜亲本材料主要农艺性状的配合力和遗传力分析
Analysis of Combining Ability and Heritability for Main Traits of 8 Parents in Watermelon

选用4个西瓜品种（‘西农八号’‘花籽京欣’‘新红宝’和‘郑杂五号’）8个亲本，采用不完全双列杂交设计，配制16个杂交组合，对16个杂交组合的8个主要性状进行配合力和遗传力估算与分析。结果表明：配制杂交组合对农艺性状的改变有极显著作用；主蔓长度、果形指数及果实发育期的广义遗传力和狭义遗传力较大，育种中适合早期进行选择。‘西农八号’母本在单果质量、中心可溶性固形物含量和边部可溶性固形物含量3个性状的一般配合力效应值最高，是一个一般配合力高的亲本。根据一般配合力相对效应值大小对亲本优劣进行排序，8个亲本优劣排序为‘西农八号’母本>‘郑杂五号’母本=‘新红宝’父本>‘西农八号’父本>‘花籽京欣’父本>‘新红宝’母本>‘郑杂五号’父本>‘花籽京欣’母本。
16 combinations crossed by 8 parents of 4 varieties(‘Xinong No.8’‘Huazijingxin’‘Xinhongbao’‘Zhengza No.5’) were selected to analyze the combining ability and heritability of 8 main agronomy traits. The results showed that the hybrid combination had extremely significant effect on the change of the agronomy traits. The heritability of 3 traits (main vine length, fruit ratio, fruit growth period) were great, and it was suitable for early selection in breeding. The general combining ability in mass per fruit, soluble solid content at center flesh and soluble solid content near rind flesh of female parent of ‘Xinong No.8’ were the best. The general combining ability sequence of parents was female parent of ‘Xinong No.8’>female parent of ‘Zhengza No.5’=male parent of ‘Xinhongbao’>male parent of ‘Xinong No.8’>male parent of ‘Huazijingxin’>female parent of ‘Xinhongbao’>male parent of ‘Zhengza No.5’>female parent of ‘Huazijingxin’.