(genetics) the tendency of a crossbred organism to have qualities superior to those of either parent
双语例句
It is important to utilize the hybrid vigor and heterozygous advantage in forest breeding and platation. 在云南松林木育种和造林过程中，应重视杂种优势和杂合有利性的利用。
A parabolic correlation between the indica-japonica differentiation of parents and heterosis of hybrid rice was detected by RAPD markers. 结果表明，亲本籼粳差异与产量杂种优势存在抛物线的关系。
