heterosis

n.杂种优势；混种盛势

Kenaf is one of the most important fibre crops, with obvious heterosis. 摘要红麻是一种重要的纤维作物，杂种优势显著。

There were some transgressive progenies in hybrids which exhibited heterosis. 杂种后代存在超亲子代，表现一定的杂种优势。