maternal quality 中文意思是什麼
maternal quality
解釋
母性的才能-
The scientists found no significant links between maternal consumption of other types of food ( pork, lamb, eal, chicken, soya and egetables ) and sperm quality
科學家們也沒有發現母親進食其他種類食物（如：豬肉、羊肉、乳牛肉、雞肉、大豆和蔬菜）與精子質量之間有聯系。 -
Article 21 physicians and midwives shall strictly observe re - levant operational procedures, improve the skills of midwifery and the quality of services so as to prevent or reduce maternal injuries
第二十一條醫師和助產人員應當嚴格遵守有關操作規程，提高助產技術和服務質量，預防和減少產傷。 -
Twenty f1 combinations crossed among 5 varieties and strains different in fiber properties according to complete diallel crossing design were used to evaluate the heterosis and gene action of boll weight and lint percentage in high quality fiber property varieties in upland cotton in 1998 1999 for two year successively at nanjing. it was indicated that there existed small interactions with the environmental factors without maternal effects and the additive gene effect was in chief, attaining to 51. 2 % and 65. 4 % respectively for boll weight and lint percentage. the dominant effect was also in higher rate, 32. 6 % and 16. 8 % respectively. the population mean heterosis of boll weight and lint percentage over the mid - parental mean were relatively prominent 13. 3 % and 3. 5 % respectively in extreme significance. however, boll weight showed no significantly surpassing parental f1 heterosis over the better parent based on population mean ( 2. 0 % ) ; while the lint percentage expressed significant negative heterosis value ( - 2. 1 % ). the gene actions were in conformity with the heterosis expression. it was shown clearly that the f1 combinations crossed between parents with similar performances had relatively high dominant effects and significant positive f1 surpassing parental heterosis ( f1 heterosis over the better parent ) ; while no f1 combination crossed between the parents with prominent mutual difference surpassed the higher parent in yield components, which indicated that among those parents with less difference and close relationships, there still existed sufficient genetic variation or certain mechanism for creating variation and achieving greater advances in breeding. correlation analyses also indicated that there still existed severely undesirable negative correlation between yield and fiber properties as well as the difficulties for their simultaneous improvements
利用5個具有不同纖維品質性狀的品種（系）配製完全雙列雜交組合20個，通過親本和f1的2年隨機區組試驗發現產量性狀的鈴重和衣分與環境的互作效應小，不存在母體效應，並以加性遺傳效應為主，分別占表型方差的51 . 2 %和65 . 4 % ;顯性遺傳效應所佔的比率也較高，分別為32 . 6 %和16 . 8 % .鈴重和衣分的群體平均優勢較大，分別為13 . 3 %和3 . 5 % ，達到了極顯著;鈴重的超親優勢為2 . 0 % ，不顯著;衣分為顯著的負值（ - 2 . 1 % ） .遺傳分析與雜種優勢結果一致.具體表現在產量性狀上，親本相當配製的組合雜合顯性較高，其超親優勢正向顯著，而極值親本（差異較大）所配組合沒有超過高親的.這表明親本差異小、親源關系較近的親本中仍然存在足夠的遺傳變異或某種機制以創造變異使育種取得更大的進展.相關分析表明了仍然存在嚴重的品質與產量的負相關，遺傳改良的難度較大 -
Various sand - entraining fermentation tests suggested that sand - entraining ( 20 % of the amount of quality maternal fermented grains ) could increase top - grade product rate by about 5 %
經過各種夾沙發酵試驗表明，按投糧數20 %的優質母糟夾沙，可以提高優級品率5 %左右。 -
Using km mouse as a animal model for studies on the maternal age effec t, we compared quantity, quality and in vitro developmental competence of oocytes from different age groups of mice to elucidate the possible mechanism of the decline in ageing - associated fertility
本實驗以昆明白小鼠作為研究母體年齡效應的動物模型，比較了不同年齡段小鼠卵母細胞的數量、質量及體外發育能力等，以探討與衰老相關生育力下降的機制。
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