父母本与多倍体西瓜着色秕籽的相关性研究

Study on Correlation Between Parents and Colored Aborted Seed of Polyploid Watermelon

以10个二倍体西瓜纯系(6个普通西瓜亚种、1个籽瓜变种、1个饲用西瓜亚种、1个粘籽西瓜亚种、1个野生西瓜Citrullus rehmii种)和6个四倍体普通西瓜纯系(二倍体西瓜纯系中6个普通西瓜诱变加倍获得)为试材,配制60个三倍体杂交组合和36个四倍体组合,研究父母本及父母本亲缘关系远近对多倍体西瓜着色秕籽的影响。结果表明:用平方欧氏距离衡量父母本的遗传距离并聚类,父母本的亲缘关系远近与三倍体西瓜的着色秕籽数无显著的线性相关关系;父母本对三倍体西瓜的着色秕籽影响差异显著,影响最大的分别是S660和TS660;相同亲缘关系的三倍体组合和四倍体组合的单瓜着色秕籽数量极显著相关,相关系数为0.578。

Taking 10 diploid watermelon pure lines（6 Citrullus lanatus subspecies,1edible seed watermelon variety,1stockmelon subspecies,1egusi seed subspecies,1 wild watermelon Citrullus rehmii species）and 6tetraploid watermelon pure lines（they were obtained by mutation and doubling with 10 diploid watermelon pure lines）as test materials,preparing 60 triploid cross combinations and 36 tetraploid combinations,the effects of parent plants and genetic relationship on colored aborted seed number of polyploid watermelon.The results showed that genetic relationship of parent plants which was measured in terms of Squared eulidean diatance was not significant linear correlated with the colored aborted seed number of triploid watermelon;parent plants had significant effects on colored aborted seed number of triploid watermelon,the most influential male plant and female plant were S660 and TS660;colored aborted seed number of tetraploid and triploid combination with same genetic relationship had a very significant correlative relation,correlation coefficient was 0.578.