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

結(jié)果表明在线日韩素人自拍网站免费观看视频，Ogura不育細(xì)胞質(zhì)對(duì)甘藍(lán)型油菜與蘿卜種間可交配性有正效應(yīng)，可交配性受核-質(zhì)互作控制。

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(gè)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，以了解Ogura不育胞質(zhì)對(duì)甘藍(lán)型油菜與蘿卜種間可交配性的影響wwwcom亚洲97。

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(lái)說(shuō)视频一区在线观看，需要有足夠的入侵性经典自拍视频欧美日韩在线观看，這可以認(rèn)為是入侵種的生物學(xué)基礎(chǔ)，可能表現(xiàn)為具有多倍性香港一级婬片A片在线播放、一定的遺傳變異精品国产福利在线观看、雜合性或表型可塑性，以及不同的交配系統(tǒng)等亚洲欧美国产日韩综合久久；其次一個(gè)物種的入侵成功還取決于入侵生境的可入侵性欧美色色影院，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)系的形成国产一级毛片黑白配，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)鍵欧美日韩一级在线观看。

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www.mjjscg.com，并增加去睪丸小鼠的性交次數(shù)黄色网站看一级，增加交配后雌性小鼠的精栓出現(xiàn)率；急性毒性試驗(yàn)測(cè)得偉劍的口服半數(shù)致死量（ld50）為901.53 mg/kg日日干夜夜操av，腹腔注射的ld50為319.60 mg/kg女同性毛片网站；長(zhǎng)期毒性試驗(yàn)研究表明該藥在大劑量時(shí)可輕度升高谷丙轉(zhuǎn)氨酶，輕度降低血糖黄色精品网、總膽紅素及膽固醇AⅤ在线免费看，而對(duì)其他血液生化指標(biāo)無(wú)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(duì)1997~1999年在江蘇省吳江市黄片久久久、宜興市城诗诗的一级黄色网站、通州市、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(cè)定国产91网站在线，結(jié)果表明江蘇省稻瘟病菌菌株的育性較低秋霞电影网理论电影在线观看，可交配率為22.77%，可育率僅為7.08%人人干人人操女的。