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为探索钝吻黄盖鲽与星斑川鲽的杂交潜力,培育具有经济价值的养殖新品种,以钝吻黄盖鲽和星斑川鲽为亲本进行了远缘杂交试验。试验采用人绒毛膜促性腺激素(HCG)催熟亲本,人工挤卵、采精,利用干法授精手段实施杂交。结果显示,当以钝吻黄盖鲽为父本,星斑川鲽为母本进行杂交时,受精率和孵化率均较高,受精率在60%以上,可成功获得受精卵,但其胚胎发育只能进行到原肠早期;当以黄盖鲽为母本,星斑川鲽为父本进行杂交,受精率和孵化率均不是很高,受精率在20%~30%,其胚胎发育阶段比较顺利,但仔鱼2日龄全部死亡,不能进一步发育。研究表明,钝吻黄盖鲽和星斑川鲽正交不能获得杂交后代而反交可获得杂交子一代。
In order to explore the hybridization potential of Brachypodium distichodon and Pleurotus ferulae, a new breed with economic value was cultivated. Human chorionic gonadotropin (HCG) was used in the experiment to inoculate the parents, squeeze the eggs by hand, and collect the seeds by using the method of dry insemination. The results showed that the fertilization rate and hatching rate were higher when the male parent of Brachionus pumila was the male parent and the parent star star crabgrass was crossed. The fertilization rate was above 60%, but the fertilized egg could be successfully obtained, but the embryo Development can only be carried out to the early intestine; when the yellow capuchin as the female parent, star spot Chuanxiong as the male parent, fertilization and hatching rate is not very high, fertilization rate of 20% to 30% of its embryonic development Stage is relatively smooth, but 2-day-old larvae all died, can not be further developed. Studies have shown that the blunt snout yellow capitatum and star spot Chuanxiong orthogonality can not get the hybrid offspring and anti-cross to get the hybrid generation.