After thirty-five generations, the two groups and their offspring were isolated reproductively because of their strong habitat preferences: they mated only within the areas they preferred, and so did not mate with flies that preferred the other areas.

經(jīng)過35代www..com黄色A片免费观看，這兩個(gè)果蠅群出現(xiàn)生殖隔離黄片一级域名，因?yàn)樗鼈冇袕?qiáng)烈的生境偏好：它們只在它們喜歡的區(qū)域交配，因此不與喜歡其它區(qū)域的果蠅交配欧美性爱,亚洲。

Male adult rats were randomly divided into five groups,which were treated via gastric gavage of distilled water(1 mL·kg-1),solution of GTW(10 mg·kg-1) and three doses of water decoction of root of C.cuneata (1.8,5.4,18 g·kg-1)+ GTW(10 mg·kg-1),respectively.8 weeks later,GTW was stopped and the decoction and water continued for another 4 weeks.And then,all the male rats were copulated with adult female rats.

將成年雄性大鼠隨機(jī)分組黄页网站1688www欧洲人妻毛片，分別給予雷公藤多苷片溶液(10 mg.kg-1)，野山楂根水煎劑(1.8三级片在线无码，5.4日韩黄色视频品爱，18 g.kg-1)+雷公藤多苷片溶液(10 mg.kg-1)和蒸餾水(1 mL.kg-1)灌胃，8周后停用雷公藤多苷999A片免费看在线播放，中藥組繼續(xù)行野山楂根灌胃群p网站。4周后各組動(dòng)物與成年雌性大鼠交配，觀察交配雌鼠妊娠率和平均胚胎女生按摩破处视频在线观看、黃體數(shù)日日骚一区二区。

During the copulating course, male stayed on the dorsal shield of female for 3-34 seconds (13.7±2.8) and then moved to the ventral side of female.

結(jié)果表明， a亚洲一区二区无字幕。未交配過的菅原毛綏螨在线免费黄站，在尋找異性交配的過程中，雄螨表現(xiàn)不太活躍和主動(dòng)日韩国产欧美亚洲。

ABSTRACT It is because that the excellent acceptors for maize transgenic engineering are insufficient in our country, especially in the southwest mountain areas of china and hereditary variation regularity for the two characters such as efficiency of embryonic callus induction and number of regenerating plant (these two characters were abbreviated to the nduction efficiency and number of regenerating in the following of the paper, respectively), which hint the maize culturing capacity, is not very clear. Therefore, aiming at picking out superior acceptors, we had made systematic researches on the two characters with combing traditional quantitative-character genetic analyzing methods such as single-factor genetic mating design, diallel crossing genetic design, genetic effect analyzing method and the modern molecular locating method such as QTLs'. The main results are followed.(1) 50 superior inbred lines and about 30 crosses in our country, especially in the southwest of China were used for identifying and selecting the superior genotypes in the above two investigated characters under the same culturing condition in 2000 and 2001. There was very significant difference among the genotypes in the both characters. But the two characters were not certainly related. Some genotypes such as 18-599 and 18-599 were very good in them. For some ones such as zong 31, induction was higher than 18-599 and 18-599 in the efficiency, but it was only 1/3 to the later in regenerating number. In some genotypes such as S37, R08, R15, P138, A318, induction efficiency was just about 3% and scarcely any regenerating plants were got. On the whole, hybrids acted better than inbreeds in the both characters.(2) Two kind of inbreeds were selected as parents of the Griffing's method 1. 18-599 and 18-599 and the inbred line zong 31 are one kind because they are not only superior in the characters of maize cross breeding, such as CA, resistance to disease and the important agricultural characters, but also excellent in transformation characters as the induction and regeneration.

針對我國午夜理论在线、特別是西南山地所需玉米轉(zhuǎn)基因工程育種優(yōu)良受體極為匱乏和反應(yīng)玉米幼胚培養(yǎng)能力的2個(gè)主要性狀，即玉米幼胚胚性愈傷組織誘導(dǎo)率和胚性愈傷組織綠苗發(fā)生數(shù)的遺傳變異規(guī)律十分不清楚的實(shí)際情況乱中年熟女伦av一区，本研究從篩選玉米轉(zhuǎn)基因工程所需要的優(yōu)良受體入手一级黄色一级，采用單因素遺傳交配設(shè)計(jì)、雙列雜交遺傳交配設(shè)計(jì)欧美曰人人操人人干、世代基因效應(yīng)等傳統(tǒng)數(shù)量性狀分析方法亚洲无码熟妇黄色视频，以及現(xiàn)代分子標(biāo)記定位主效QTL分析方法，對玉米幼胚胚性愈傷組織誘導(dǎo)率和胚性愈傷組織綠苗發(fā)生數(shù)等2個(gè)性狀進(jìn)行了較為系統(tǒng)的分析研究国产av福利第一精品，取得以下主要研究結(jié)果：(1)于2000年和2001年通過對我國手机在线视频日韩一区、特別是西南地區(qū)近50份優(yōu)良自交系和近30個(gè)雜交組合，在相同培養(yǎng)條件下，對幼胚培養(yǎng)胚性愈傷組織誘導(dǎo)率和胚性愈傷組織綠苗發(fā)生數(shù)等2個(gè)幼胚培養(yǎng)能力性狀進(jìn)行了篩選與鑒定5060午夜全黄一级A，發(fā)現(xiàn)玉米不同基因型具有完全不同的幼胚培養(yǎng)胚性愈傷組織誘導(dǎo)率和胚性愈傷組織綠苗發(fā)生數(shù)人人摸人人操人人搞不卡不断，但幼胚培養(yǎng)胚性愈傷組織誘導(dǎo)率與胚性愈傷組織綠苗發(fā)生數(shù)并不具有必然的相關(guān)關(guān)系，有的基因型久久免费视频精神品，如自交系18-599和18-599在胚性愈傷組織誘導(dǎo)率和愈傷組織綠苗發(fā)生數(shù)等2個(gè)性狀都表現(xiàn)相當(dāng)優(yōu)異久久久久精品香蕉免费看；有的基因型，如自交系綜31超级大潮喷加勒比无码，僅幼胚培養(yǎng)胚性愈傷組織誘導(dǎo)率性狀表現(xiàn)高于19-599和18-599人妻少妇一级大黄片视频在线无码免费看，但在胚性愈傷組織綠苗發(fā)生數(shù)這一性狀則與它們有相當(dāng)大的差距女人內射色人人在线，僅為19-599和18-599的1/3左右亚洲欧美日韩AⅤ中文三区；有的基因型，如S37一区二区美女脱黑色丝袜视频、R08原创国产、R15、P138日韩特黄Av毛片免费播放、A318等玉米自交系不僅幼胚培養(yǎng)胚性愈傷組織誘導(dǎo)率很低色惰日本人哺乳奶水视频网1，平均僅在3％左右，而且胚性愈傷組織綠苗發(fā)生數(shù)表現(xiàn)也很差国产女人A片免费视频，基本上沒有分化成苗欧美成电影网。

While dark-eyed juncos are monogamous during the main breeding season, they are known to entertain an off-season affair now and then.

雖然黑眼燈芯草雀在交配季節(jié)是一夫一妻的，但在非交配季節(jié)美女操逼特级黄片，時(shí)而會發(fā)生婚外情免费黄色三级性交。

Three hundred and twenty-five isolates of Magnaporthe grisea collected from rice plants in Wujiang, Yixing, Tongzhou, Gaoyou and Ganyu of Jiangsu province from 1997~1999 were tested for mating type and fertility with standard tester strains. Seventy-four tested isolates produced perithecia after mated with tester strains, in which, 48 were MAT1-1 and 26 were MAT1-2 mating type.

用標(biāo)準(zhǔn)菌株對1997~1999年在江蘇省吳江市、宜興市高清无码巨乳人妻、通州市美欧三级、高郵市和贛榆縣采集的325個(gè)稻瘟病菌單孢分離菌株的可育性和交配型進(jìn)行了測定，結(jié)果表明江蘇省稻瘟病菌菌株的育性較低呦呦资源在线，可交配率為22.77%欧美日韩国产在线va，可育率僅為7.08%。

In the mating test, mycelial protoplast pairs between single spore isolates of different strains formed colonies with clamp connection, while mycelial protoplast pairs between the same single spore isolates formed colonies without clamp connection, suggesting that the two nuclei of the spores possessed identical mating type factors.

在交配試驗(yàn)中午夜淫荡，源于不同菌株單孢分離物的菌絲原生質(zhì)體的配對形成具鎖狀聯(lián)合的菌落6080三级午夜理论，而源于同一單孢分離物的菌絲原生質(zhì)體的配對則形成無鎖狀聯(lián)合的菌落，暗示擔(dān)孢子中的兩個(gè)核具有相同的交配型黄片a片在线免费看。

In contrast,ZHJ2 males interfered more successfully with courtships initiated by males of the same biotype than those initiated by B males.B males could guard females post copulation,and more effectively inhibited courtships from a ZHJ2 male than from a B male during guarding.

這些求偶互作行為使得ZHJ2型雄蟲的存在提高了B型雌雄之間的交配次數(shù)国内偷拍高清精品免费视频，相反，B型雄蟲的存在使得ZHJ2型雌雄之間的交配次數(shù)減少色先锋玖玖av资源部每次更新。

I assessed if mating common eastern froglets Crinia signifera exhibited size-related patterns. I compared the snout-urostyle lengths and body condition of amplexing males with that of non-amplexing males to determine if successful males were larger or in better condition. I assessed if there was a linear relationship between the body length of the female and the successful male and the relative condition of the male (measured by body mass versus length).

通過比較抱對和非抱對普通東方小蛙的吻-尾干骨長和檢測個(gè)體較大或狀態(tài)較好的雄體是否為成功繁殖個(gè)體最新国产乱伦视频，檢測雌蛙體長與交配成功的雄蛙的體長和相對狀態(tài)之間是否存在線形關(guān)系，評估交配與個(gè)體大小之間的關(guān)系。

I assessed if mating common eastern froglets Crinia signifera exhibited size-related patterns. I compared the snout-urostyle lengths and body condition of amplexing males with that of non-amplexing males to determine if successful males were larger or in better condition. I assessed if there was a linear relationship between the body length of the female and the successful male and the relative condition of the male (measured by body mass versus length).

通過比較抱對和非抱對普通東方小蛙的吻尾干骨長和檢測個(gè)體較大或狀態(tài)較好的雄體是否為成功繁殖個(gè)體8050午夜级毛片一级，檢測雌蛙體長與交配成功的雄蛙的體長和相對狀態(tài)之間是否存在線形關(guān)系激情中文字幕图片区小说区，評估交配與個(gè)體大小之間的關(guān)系。