first filial generation

基本解释

F1 The first filial generation; i. e. the first generation that results from a particular cross.
子一代（杂种一代）：杂交第一代，也就是一个特定杂交产生的第一代。
The crossing from two different geographical wild populations in-creased the genetic diversity of the first filial generation.
不同地理种群间杂交能够增加子代的遗传多态性。
Nevertheless, only the first filial generation (F1) of the hybrid Bt transgenic was available. The F2 generation was not suggested to extension because of its segregation of character.
杂交抗虫棉只有其F1代种有较高的使用价值，F2代性状分离严重，不宜在生产上推广使用。