基本解释n.测交(一种使杂种子一代与隐性类型交配以测定杂种子一代遗传型的方法)同根派生 英汉例句用作名词 (n.)From the testcross performance data, selections, based on an index, were made for intermating of each of the four groups.根据测交种数据，利用指数方法进行选择，方法是对每个杂种优势群进行相互交配。