cold sperm 中文意思是什麼
cold sperm
解釋
精冷-
Now it has been one of the most important aquatic products in the freshwater cultivation. however, this prawn ca n ' t survive at a water temperature lower than 14c, which has seriously limited its cultivation expanding. in order to obta in a new breed of this prawn with increased cold - resistance, we investigated the cloning of a synthetic gene ( sbwafp ) based on the primary sequence of the mature spruce budworm ( choristoneura fumiferana ) antifreeze protein ( sbwafp ) and the integration of sbwafp into the embryo genomes of giant freshwater prawn by spermatophore - microinjection ( smi ), a sperm - mediated gene transfer technique
本研究的特色和創新之處在於，針對羅氏沼蝦不耐低溫，但體型相對較大，精莢明顯的特點，首次將目前已知具有最強抗凍活性的雲杉卷葉蛾（ sprucebudworm ， choristoneurafumiferana ）抗凍蛋白（ sbwafp ）基因（ sbwafp ） ，通過精子介導的轉基因技術整合到羅氏沼蝦的胚胎中，以期培育出耐低溫的羅氏沼蝦新品系。 -
With the cold shock, the diploid eggs also developed to diploid gynogens after the activation of the uv - irradiated sperm, no tetraploid gynogens being found, suggesting that it is difficult to double the chromosome from the diploid to tetraploid by means of cold shock treatment
沒有檢測到雌核發育四倍體。這表明通過冷休克讓二倍體卵子加倍成四倍體比較困難，但是經冷休克處理獲得的雌核發育魚的孵化率高於沒有進行冷休克處理的。
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