繁殖的

Result The results showed that the cutting survival rate and propagation coefficient were higher in interlayer scale, the difference of which was not obvious between outside and inside scales. Compared with integrated scale, cross cutting and score cutting scale all could reduce scale propagation coefficient Treating scale with 0.1% HgCl2 could prevent scale rot effectively and increase propagation coefficient Integrated scale without segmentation was good for lily bud scale cutting.

结果］结果表明：中层鳞片的扦插成活率较高，繁殖系数也较高，外层与内层鳞片之间的差异不明显；与完整鳞片相比，横切鳞片和纵切鳞片都会降低鳞片繁殖系数；用0.1% HgCl2处理鳞片，可有效防止磷片腐烂，提高繁殖系数。

The prolactin gene was studied as a candidate gene for the prolificacy of Small Tail Han sheep. Single nucleotide polymorphisms of exon 1 to exon 5 of PRL gene were detected in high fecundity breeds and low fecundity breeds (Dorset, Texel and Corriedale sheep) with five pairs of primers by PCR-SSCP.

设计5对引物，采用PCR-SSCP技术检测催乳素（prolactin，PRL）基因外显子1至外显子5在高繁殖力绵羊品种和低繁殖力绵羊品种（多赛特、特克塞尔和考力代）中的单核苷酸多态性，同时研究该基因对小尾寒羊高繁殖力的影响。

The gonadotropin releasing hormone receptor gene was studied as a candidate gene for the prolificacy of Small Tail Han sheep. Eight pairs of primers were designed to detect single nucleotide polymorphisms of exon 1, exon 2 and exon 3 of GnRHR gene in both high fecundity breeds and low fecundity breeds (South African Mutton Merino, Corriedale and Chinese Merino sheep) by PCR-SSCP. Only the products amplified by primers P4 and P7 displayed polymorphisms.

设计8对引物，应用聚合酶链式反应-单链构象多态性技术检测促性腺激素释放激素受体（gonadotropin releasing hormone receptor， GnRHR）基因外显子1、外显子2和外显子3在高繁殖力品种和低繁殖力品种（南非肉用美利奴、考力代和中国美利奴绵羊）中的单核苷酸多态性，同时研究该基因对小尾寒羊高繁殖力的影响。

The inhibin a gene、 the bone morphogenetic protein 4 (BMP4) gene and the bone morphogenetic protein 7 (BMP7) gene were studied as candidate genes on the prolificacy of Small Tail Han sheep. Single nucleotide polymorphisms of 5 ' regulatory region、 exon 1 of INHA gene;exon 2、 exon 3 and exon 4 of BMP4 gene and exon 2、 exon 3 of BMP7 were detected in high fecundity breed and low fecundity breeds (Chinese Merino sheep, Corriedale sheep and South African Mutton Merino sheep) by PCR-SSCP. The results indicated that there was a mutation (316C→T) in 5' region of INHA gene in Small Tail Han sheep, Chinese Merino sheep and Corriedale sheep, the same mutation did not exist in South African Mutton Merino sheep.

采用PCR-SSCP技术检测抑制素α(inhibin α，INHA)基因5'调控区、外显子1，骨形态发生蛋白4(bone morphogenetic protein 4，BMP4)基因外显子2、外显子3和外显子4以及骨形态发生蛋白7(bone morphogenetic protein 7，BMP7)基因外显子2和外显子3在高繁殖力绵羊品种以及低繁殖力绵羊品种(中国美利奴绵羊、考力代绵羊、南非肉用美利奴绵羊)中的单核苷酸多态性，同时研究这三个基因对小尾寒羊高繁殖力的影响。

Reproduction is a key process, which highly influences the economic efficiency of pig production. Traditional quantitative genetics plays a very important role in animal breeding. Selection for increased number of piglets born has been employed in pigs with only limited success because of the low heritability, the late expression in life and the sex-limited nature of reproductive traits.

中文题名猪ESR和FSH-β位点对猪繁殖性状的调控及其调控机理的研究副题名外文题名 Regulations of reproductive traits by ESR and FSH-β loci and the mechanisms involved 论文作者李凤娥导师熊远著院士学科专业动物遗传育种与繁殖研究领域\研究方向猪的分子遗传育种学位级别博士学位授予单位华中农业大学学位授予日期2002 论文页码总数115页关键词猪繁殖性状馆藏号BSLW /2003 /S828 /2 繁殖是养猪生产过程中的关键一环，该环节成功与否直接影响整个养猪业的经济效益。

We proposed, therefore, using adequate numbers of spawner obtai ned from various localities in artificial propagation and inoculating genetic ma terials from natural populations periodically are probably an effective measure to maintain or to increase the genetic variability in an artificially propagated fish stock.

我们认为生产上采用数量大、来源广的亲鱼进行人工繁殖，并定期用天然种群更换或补充繁殖用亲鱼很可能是保持或增加鱼类人工繁殖种群遗传变异性的一种有一效手段。关键词同工酶座位，电泳，遗传变异性，天然种群，草鱼

The results showed that there was no remarkable difference of reproductive hormone between the idiophase and non-idiophase, which established the theory foundation for the reproductive endocrinology and the artifical breeding of Andrias davidianus, was made.

实验结果表明，雌雄性中国大鲵在繁殖期间与非繁殖期间的6项生殖激素检测结果没有明显的差异，对中国大鲵血清中的生殖激素与繁殖期的相关性进行了初步探讨，为中国大鲵生殖内分泌学的研究和人工繁殖积累了资料。

Corylus heterophylla vegetative propagation was relatively difficult, layering method was mainly used at present, but low coefficient of propagation limited mass production of its seedlings.

榛子是一种无性繁殖相对困难的树种，目前主要采用压条法进行繁殖，繁殖系数低，这限制了榛子苗的大量生产。

It is seen from grafting Aphid test that green peach aphid can feed on green cabbage,spinach and lettuce,and reproduce on them,furthermore,it shows the different viability between on the tested hosts.

通过接种试验看出，桃蚜接种在青菜、菠菜、莴苣等蔬菜上均能取食繁殖，而且相互间可以接种，桃蚜接种在青菜上繁殖生长最快，萝卜蚜和桃蚜接种在番茄上则不能生活，青菜上的萝卜蚜和桃蚜接种在烟草上，其结果萝卜蚜不能生活，而桃蚜经过短期适应取食后，仍可生长、繁殖，为害烟草。

Clutch size effects the whole reproductive phase and efficacy, and it is the main factor of affecting the reproductive success of Great Tit.

本次研究表明，大山雀的窝卵数与繁殖成功之间的关系是非常显著的，窝卵数影响大山雀的整个繁殖过程和繁殖功效，是影响大山雀繁殖成功的重要因子。

Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

I am coming just now,' and went on perfuming himself with Hunut, then he came and sat.

我来只是现在，'歼灭战perfuming自己与胡努特，那麼，他来到和SAT 。