Sativus. The results demonstrated that the Ogura sterile cytoplasm had positive effect on interspecific crossability between B.

結(jié)果表明黄色视频看看，Ogura不育細(xì)胞質(zhì)對甘藍(lán)型油菜與蘿卜種間可交配性有正效應(yīng)狼友视频无码，可交配性受核-質(zhì)互作控制欧美日韩图自拍图片大全。

In order to understand the effect of Ogura sterile cytoplasm on interspecific crossability between Brassica napus and Raphanus sativus, three radish cytoplasmic male sterilie lines of B. napus and their corresponding maintenance lines were used as female parents to hybridize with R.

用三個甘藍(lán)型油菜蘿卜細(xì)胞質(zhì)雄性不育系及其相應(yīng)的保持系作母本與蘿卜雜交最新无码专区视频在线观看，以了解Ogura不育胞質(zhì)對甘藍(lán)型油菜與蘿卜種間可交配性的影響Carib在线观看。

Firstly, an invasive species must be invasive enough in itself or has some biological distinction, such as quantitative and qualitative differences in the genome, or patterns of recombination. Secondly, to invade successfully, a new environment for an invasive species must be invasible, and this we may call the ecological basis of invasion. An invasive species may need to establish new interactions with other species, especially those mutualistic relations such as animal related pollination, seed dispersal by animals, mycorrhizal fungi, and symbioses between plants and nitrogen fixing bacteria.

首先從其自身來說，需要有足夠的入侵性欧美一级纯片免费观看一区二区，這可以認(rèn)為是入侵種的生物學(xué)基礎(chǔ)殴美性爱网，可能表現(xiàn)為具有多倍性、一定的遺傳變異黄操逼视频网站、雜合性或表型可塑性日韩AA无码视频，以及不同的交配系統(tǒng)等在线看黄片.com；其次一個物種的入侵成功還取決于入侵生境的可入侵性国产最新网址在线观看，這可以認(rèn)為是入侵種的生態(tài)學(xué)基礎(chǔ)，而新的種間關(guān)系的形成国产日韩亚洲精品欧美，尤其是入侵種與其他種類的互惠共生關(guān)系的建成是關(guān)鍵色哟综合啪啪。

Results:weijian obviously shortened the latent period of erection in castrational rats after electric stimulus and the latent period of coitus in castrational mice,increased coitus times in castrational mice,increased the appearance rate of sperm suppository in copulated female mice. the acute toxicity tests showed that the half lethal dose(ld50) of weijian was 901.53 mg/kg and 319.60 mg/kg, the long-term toxicity tests showed that large dose of weijian slightly increased the level of glutamic pyruvic transaminase and decreased the glucose,triglyceride and cholesterol of blood, while had no effects on other biochemical factors.

結(jié)果： 偉劍能明顯縮短去睪丸大鼠的電刺激陰莖勃起潛伏期，明顯縮短去睪丸小鼠的性交潛伏期国语对白视频免费观看，并增加去睪丸小鼠的性交次數(shù)乱子无码伦A∨在线A，增加交配后雌性小鼠的精栓出現(xiàn)率；急性毒性試驗測得偉劍的口服半數(shù)致死量（ld50）為901.53 mg/kg天天色天天射天天干，腹腔注射的ld50為319.60 mg/kg久久亚洲精品午夜观看；長期毒性試驗研究表明該藥在大劑量時可輕度升高谷丙轉(zhuǎn)氨酶，輕度降低血糖日本黄色视频免费网站精品、總膽紅素及膽固醇粗大长av在线，而對其他血液生化指標(biāo)無影響。

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年在江蘇省吳江市好粗好爽、宜興市国产131在线视频免费观看、通州市、高郵市和贛榆縣采集的325個稻瘟病菌單孢分離菌株的可育性和交配型進(jìn)行了測定黄色视频高清免费在线观看视频，結(jié)果表明江蘇省稻瘟病菌菌株的育性較低国产男女另类裸交一级黄片，可交配率為22.77%，可育率僅為7.08%成年人啪啪视频无码。

crossability：可交配性

可過應(yīng)極寬廣或極端的環(huán)境條件的 eurytopic | 可交配性 crossability | 可可粉 cocoa

crossability：(異種的)可交配性

cross-vine | 十字蔓(產(chǎn)于美國東南部) | crossability | (異種的)可交配性 | crossable | (異種)可交配的

tetrapolar heterothallism：四極性異宗配合

異宗配合根據(jù)控制交配型的不親和性因子是一對還是兩對,也可分為兩類:具有一對不親和性因子的二極性異宗配合(bipolar heterothallism)和具有兩對不親和性因子的四極性異宗配合(tetrapolar heterothallism).

cross unfruitfulness：雜交不結(jié)實性

雜交不結(jié)實 cross unfruitful | 雜交不結(jié)實性 cross unfruitfulness | 可交配性 crossability

crossable：(異種)可交配的

crossability | (異種的)可交配性 | crossable | (異種)可交配的 | crossarm brace | 橫臂拉條, 交叉撐

sporophytic self-incompatibility system：孢子體自交不親和系統(tǒng)

配子體自交不親和系統(tǒng) gametophytic self-incompatibility system | 孢子體自交不親和系統(tǒng) sporophytic self-incompatibility system | 可交配性 crossability

estrus：動情期

由雌羚會在動情期(estrus)第一天進(jìn)入交配區(qū)和一只或多只雄羚進(jìn)行交配. 在交配區(qū)中,由居領(lǐng)導(dǎo)權(quán)的雄性主控,但當(dāng)它精疲力盡(losestamina)時,其他雄羚就會取而代之. 在九月至次年的二月雨季時交配. 雌羚一歲半已達(dá)可交配性成熟,