西瓜一对质量性状纯合技术研究

Study on Purification Technology about a Pair of Qualitative Characters in Watermelon

以西瓜杂交后代的F_3代系选材料为试材,研究西瓜1对质量性状的纯合技术。结果表明:按照1对质量性状的分离规律确定系内种植单瓜份数和每份单瓜的群体大小,在当代鉴定筛选出质量性状的纯合系;改变传统的"边优选边纯合"西瓜自交系选育理念为"边纯合边优选"新的自交系选育理念,可减少选育世代,加速自交系选育进程。

Hybrid progeny F3 generation of watermelon used was test materials,the homozygous technology of a pair qualitative character of watermelon were studied.The results showed that,according to segregation law of qualitative character,the amount and population size of single fruit within the lines can be determined to identify and screen homozygous line in a generation.The traditional idea of watermelon inbred line breeding Optimizing and Purifying'was changed into the new one'Purifying and Optimizing',and the traditional hybrid progeny selection mainly based on breeding experience was turned into the new method,which was mostly based on difference of qualitative characters between parents in procedure.Those can reduce breeding generations and accelerate inbred line breeding.