雌性不育 的英文怎麼說
中文拼音 [cíxìngbùyù]
雌性不育
英文
female sterile-
On the basis of foreign documents, the dissertation firstly describes the morphology, taxonomy, and biological characters of cochineal insects. then, by using artificial climate cases in the lab, according to orthogonal design, 8 lands of combinations of temperature, humidity and light is set, while the temperature has four levels : 15, 20, 25 and 30, and the relative humidity has two levels : 60 % and 80 %, while the light also has two levels : 980 lux and 60 lux. through observations and analysis of hatching percentage, survival percentage of the first instar and during from the second instar to the adult, the population tendency index, generation life cycle, size and eggs of female adult, the development of the cochineal under different conditions is studied
在收集、整理國外對胭脂蟲的研究資料基礎上，首先從胭脂蟲的形態學、分類學、生物學特性入手，進而在實驗室內利用人工氣候箱，應用正交設計方法，設計了4種溫度、 2種濕度、 2種光照梯度的不同組合，通過測定胭脂蟲的孵化率、 1齡若蟲的存活率、 2齡若蟲至成蟲期存活率、種群趨勢指數、世代歷期、雌成蟲的大小、懷卵量等生物學指標，深入研究胭脂蟲在這些組合下的生長發育狀況，應用數理統計方法，分析出溫度、濕度和光照對各項生物學指標的影響，找出胭脂蟲適宜的室內培育條件，並為野外胭脂蟲的培育提供一定的理論依據。Using the hprt gene as a positive control, our result suggested that both the testis tissue and the male embryos from which sry transcription can be detected failed to yield any positive results of xist. female embryos at the pronucleus stage and 2 - cell failed to produce any positive result of sry and xist too. while since the 4 - cells period, xist is constantly transcribed until blastocyst stages
然後利用實驗一確定的pcr條件，以hprt為陽性對照，用巢式rt - pcr對小鼠早期胚胎進行xist基因的轉錄分析，結果發現，轉錄sry基因的睪丸組織以及雄性胚胎，從受精卵發育到囊胚的過程中，基本上不轉錄xist基因；不轉錄sry基因的雌性卵母細胞和雌性胚胎，從出現原核開始，到發育至2 -細胞期的過程中， xist基因一直不轉錄，但是，從4 -細胞期開始，一直到孵化前囊胚階段，雌性胚胎都轉錄xist基因。This modification includes : ( 1 ) selecting two important molecules as candidates, ( 2 ) choosing a promiscuous t - cell epitope, and two b - cell epitopes or conserved amino acid sequences from the two important molecules, ( 3 ) connecting them adequately through analysis by the molecule designing software. therefore, the synthetic new antigen may interfere with the process of fertilization by multiple ways and its contraceptive effects may be enhancing. based on the molecule designing methods, the b - lymphocyte cell epitope of sperm / testis specific protein sp17 and cyritestin which interfere with fertilization in mouse, as well as the promiscuous th cell epitope of the ribonuclease ( rnase ) in bovine were selected
本研究以蛋白質分子設計的理論和方法研究避孕疫苗，將sp17和cyritestin關鍵表位和牛核糖核酸酶非選擇性th細胞表位合理組合，獲得新抗原- 35肽序列；並在合成、純化後分別與弗氏佐劑、免疫刺激復合物（ iscoms ）混合后免疫不同遺傳背景的雌性小鼠，觀察血清和生殖道內的特異性抗體滴度的動態變化、生育力的改變以及免疫后小鼠重要臟器的組織病理學改變：以及在ivf下，新抗原的特異性抗血清對精卵相互作用的影響及抗原在精子表面的特異性定位。Females of this small hammerhead shark species were thought to mate with several males and store their sperm for later use, so scientists assumed the resulting litter of baby sharks would have several different fathers
窄頭雙髻鯊科學家曾認為，雌性窄頭雙髻鯊有不同的性伴侶並將不同的雄鯊精子儲存在體內供今後孕育幼鯊，於是雌性窄頭雙髻鯊產下的每胎小鯊魚都可能有若干個父親。Location of the sterile gene for female sterile wheat by microsatellite marker
小麥雌性不育基因的微衛星標記定位The objective of this study was whether the reconstituted embryo with the second polar body ( pb2 ) can develop. firstly, female mouse was superovulated with pmsg + hcg and keep in the same cage with male mouse, the pronuclear embryo was obtained at the different time after hcg injection with different motheds to investigate the existing time of pronuclear embryo. then pronuclear embryo was cultured with three different mediums to select the best to culture in vitro
母鼠在注射hcg后與公鼠同籠交配，並在注射hcg后不同時間（從18h到26h ） 、不同方法（體內法和體外法）獲取胚胎，研究獲取原核胚的最佳時間；在此基礎上獲得具有第二極體原核胚，然後對原核胚進行顯微操作，去除雌原核並注入第二極體，探討第二極體內遺傳物質支持胚胎發育的潛力；同時利用dna特異性染料h33342對原核胚進行染色，顯示並比較原核和第二極體內的dna遺傳物質。The statistic result indicated that the dry weight of buds and stamens of male sterile lines in b. napus l. are much smaller than the control group while the pistils are much larger
結果表明，干物質重量雄性不育系花蕾和雄蕊顯著小於保持系，而雌蕊則明顯大於保持系。But in differentiation of testi s, estrogens are hardly synthesized from androgens, the increase of mitochondria and smooth endoplasmic reticulum is mainly used in the growth of gonad, so their quantities are less than that in ovary
在精巢的分化中基本上不把雄性激素合成為雌激素，線粒體和光面內質網的增多主要是用於性腺的發育生長，所以數目不及卵巢中的多。Official holiday begins to get early, menopause evening, do not bear the child or big the estrogen level of birth female is average relatively the ordinary person wants tall
例假開始得早、絕經期晚、不生育孩子或大齡生育的女性的雌激素水平一般都較常人要高。分享友人