释义 n.[遗] 杂种优势复数heteroses 实用短语heterosis or hybrid vigor杂种优势negative heterosis负优势,负上风,负杂种优势positive heterosis正优势heterosis index杂种优势指数standard heterosis标准优势two gene heterosis二基因杂种优势mid-parent heterosis中亲优势,超中优势over-parent heterosis超亲优势maternal heterosis母本杂种优势