子二代

zǐ èr dài
  • second filial generation
子二代子二代
  1. 文昌鱼的实验室繁育及子二代获得

    Laboratory Culturing and Acquirement of the Second Filial Generation of Amphioxus

  2. 中国大鲵子二代适应能力及生长优势的研究

    Research on Chinese Giant Salamander F_2 Adaptability and Growth Advantages

  3. 中国大鲵子二代规模化人工孵化技术的研究

    Research on Technology of Chinese Giant Salamander F_2 Artificial Incubation

  4. 提高大鲵子二代苗种成活率技术初报

    A primary report of the improvement of survive rate of F_2 giant salamanders

  5. 研究结果如下:(1)久效磷改变了细小色矛线虫子一代和子二代的种群动态。

    Results showed : ( 1 ) The population dynamics of the first and second offspring of C. germanica were changed by monocrotophos .

  6. 子二代鸟在生长速度方面与子一代鸟比较,表现为平均日增重曲线峰值前移和达90公斤体重的饲养月龄提前一个月。

    Ln compar is on to the first filial generation , the second filial generation grew faster and the curve for daily weight gain put forward .

  7. 系统研究了影响大鲵子二代孵化率的环境因子(包括水质、水温、孵化密度)、硬件设施和软件管理技术。

    The study systematically researched on the effect of environment factors such as water quality , water temperature , incubation density as well as incubation facilities and management technique to the hatching rate of the Chinese giant salamander .

  8. 通过统计子一代及子二代的性比,初步认为稀有鮈鲫性别决定机制复杂,其常染色体上的因子可能参与了性别决定。

    Based on the results from scoring sex ratios in the F1 and F2 progenies , a complex mechanism of sex determination in rare minnow was proposed , and factors on autosomal chromosomes might have influenced on its sex in this study .