无籽西瓜主要农艺性状配合力及遗传力分析

Combining Ability and Heritability Analysis of Main Agronomic Traits in Seedless Watermelon

选用12个西瓜高世代自交系进行6×6不完全双列杂交试验,分析了后代产量及品质等性状的配合力和遗传力。结果表明:除主蔓长度、果皮厚度外,其余11个性状从育种角度,适宜采用优势育种。根据各个亲本的综合评价,6个父本一般配合力优劣顺序为:华欣(A1)>大明京欣2号(A2)>丰园W-1(A6)>早抗丽佳(A5)>玉玲珑(A4)>京欣2号(A3);6个母本一般配合力优劣顺序为:甜霸(M5)>8424(M4)>鲁青7号(M6)>甜欣2号(M2)>国豫2号(M1)、春一(M3)。其中,自交系M5与A1在提高杂交一代果实产量和营养品质方面是表现良好的母本和父本。

Twelve watermelon inbreds were used to create triploid hybrids with 6 × 6 incomplete diallel mating design and to study combining ability and heritability of yield and quality in seedless watermelon.Heterosis was observed on 11 traits（except main shoot length and rind thickness）among 13 traits evaluated.The general combining ability of the 6 male parental lines was Huaxin（A1〉）Damingjingxinerhao（A2）〉Fengyuan W-1（A6）〉Zaokanglijia（A5）〉Yulinglong（A4）〉Jingxinerhao（A3）.The general combining ability of the 6 female parental lines was Tianba（M5）〉8424（M4）〉Luqingqihao（M6）〉Tianxinerhao（M2）〉Guoyuerhao（M1）and Chunyi（M3）.Inbred lines M5 and A1 are the best parental lines for improving hybrid yield and nutritional quality.