stable breeding 中文意思是什麼
stable breeding
解釋
圈養-
The paper adopted the common breeding way by series of mutagen treating to the yeast ' s cell and spheroplast. finally, the excellent mutant 75l 3555 was obtained. its nature of the production was determined and it can product ethanol on the condition of 40 and have high fermentative speed and stable production. on the other hand, the test was made that the best fermentative condition was found. in the malt juice, adding 0. 02 % k + or 0. 03 % a13 + can increase the production strikingly and adding some degree concentration trahalose can increase the production too and cut short the time of taming. in the study of using molasses producting ethanol, we can obtain high productivity contained the following composition : nitrogen source 1. 5 % maize and 0. 075 % ( nh4 ) 2so4
本實驗以常規的育種方法，通過對酵母細胞懸液和原生質體進行一系列誘變，經過大量的篩選，最終選育出一株耐高溫高產菌株75l _ （ 3566 ） ，並對其進行了生產性能的測定。 75l _ （ 3566 ）在40條件下，濃度為20 bx的麥芽汁發酵液中，產酒率高達11 . 5 ，而且發酵速度快，發酵周期可縮短12h ，其生產性能穩定，可以適應大部分以澱粉質為原料的生產廠家的需要。同時本實驗對75l _ （ 3566 ）進行了發酵條件優化的初步研究。 -
By stirring water with the impeller, splash water to the air evenly and widely, strengthen the pond water ' s flowing circulation, make pond water dissolve into oxygen and death of fish, shrimp and eel, raise the breeding density, quicken the growth so to achieve high and stable yields
通過葉輪攪水，把水均勻而彌散地潑向空間，加強池水流動循環，使池水溶入氧而稀釋和排出有害物質，增加水中的溶氧量，改善水質，防止魚蝦鰻浮頭死亡，提高養殖密度，加速生長，從而達到高產穩產。 -
These restorer lines showed both stable and uniform agronomical characters and a good restoring ability, and their testcrossing f1 hybrids had a strong heterosis in grain yield, which indicates that the recurrent selection provides an effective way in breeding of three - line japonica restorer lines and makes it possible the commercial production of three - line japonica hybrid rice in north cold rice growing area in china
這些恢復系性狀穩定，恢復度好，測交f1代產量優勢明顯，表明輪回選擇為粳稻恢復系選育提供了一條新的技術途徑，並使三系雜交稻在北方寒冷稻作區的大面積推廣成為可能。 -
The mosquitoes breed mainly in water - logged fields, marshes, ditches and small stable collections of water around cultivated fields. the public is reminded to prevent mosquito breeding by removing stagnant water
發言人表示，日本腦炎由庫蚊傳播，該蚊在積水農田、沼澤、溝渠及耕地四周的積水處滋生，市民應採取措施清除積水，預防蚊子滋生。 -
The spokesman said je is transmitted by culicine mosquitoes. the mosquitoes breed mainly in water - logged fields, marshes, ditches and small stable collections of water around cultivated fields. the public is reminded to take measures to prevent mosquito breeding by removing stagnant water
發言人表示，日本腦炎主要由庫蚊傳播，該蚊在積水農田、沼澤、溝渠及耕地四周的積水處滋生，市民應採取措施清除積水，預防蚊子滋生。 -
Introduced infected by the turnip mosaic virus. there are many useful objective genes can be used in vegetable genetic transformation, but the research work of chinese cabbage genetic transformation is little. the reaserch on transforming chinese cabbage using agrobacterium - med ated method has n ' t been report at home and abroad. ln the test, tumv - cp gene was transferred into chinese cabbage ( brassica campestris l. ssp. pekinensis ) via agrobacterium - mediated method. a high effective regeneration and genetic transformatin system has been established, the detection by the method of molecular biology, has proved that the regenerative plants are transgenic plants and the target genes have been expressed transgenic plants partly. meanwhile transgenic progenies were traced and investigated so that heredity, stability and expression of target gene were researched. the virus resistant, stable plants were expected to obt ain so that theoretical base can be established for chinese cabbage breeding by gene engineering
利用農桿菌介導法轉化大白菜抗病基因的研究工作在國內外未見報道。本課試驗採用農桿菌介導法將tumv - cp基因導入大白菜中，建立了高效的大白菜離體再生、遺傳轉化體系，並對轉基因植株進行分子生物學檢測，證實得到的再生植株為轉基因植株，目的基因已在部分植株上表達。同時，對轉基因植株的後代進行檢測，分析該基因所控制性狀的遺傳穩定性以及基因表達情況，為大白菜基因工程抗病育種提供理論依據。
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