f2 generation中文什么意思

第一代杂种

• generation:    n. 1.代〔约30年〕，世代，时代 ...
• second filial (f2) generation:    第二子代
• f2:    第二子代

例句与用法

1. If the characteristic is governed by simple mendelian genes , the typical monohybrid and dihybrid ratios become apparent in the f2 generation
   如果其特征取决于单一孟德尔基因，那么典型的单基因杂种和和双基因杂种的遗传比率将在子二代呈现。
2. Yield , quality , blast resistance and cold endurance were evaluated from f2 generation , and at the same time , yield , adaptability , quality , blast resistance and cold endurance were studied
   选育过程中从集团单株选拔开始，每年都对高产性、品质、稻瘟病抗性、耐寒性进行同步鉴定，作为选拔的科学依据。