杂交

Therefore, in order to achieve a fundamental improvement of grain quality of indica hybrid rice.

利用米质性状的遗传规律，加强优质A、R系的选育，才能从根本上解决杂交稻米质差的问题。

An enriched PCR fragments with less complexity were obtained and mainly expressed in the denervated hippoampus After cloning into the plasmid vector, 46 clones were initially screened and subjected to autosequencing By comparison with the EMBO gene databases, 21 gene fragments of different types were obtained with 11 similar to genes of known function and 10 similar to ones of unknown function It is inferable that the altered gene expressions of hippocampus following the entorhinally denervation may underlie the specfic reinnervation and the formation of synapses by transplanted entorhinal neurons with host neuropil within the denervated target areas.

初步挑选出的46个转化后的阳性克隆，经点杂交筛选和基因序列分析，与Gene Database同源性比较后，得到21种基因片段，其中功能已知的有11种，功能未知的有10种。结果表明海马在去内嗅皮层后某些基因表达的改变，这可能是移植胚胎内嗅皮层神经细胞轴突特异支配去神经靶区和重建突触联系有关。

Ljcyc5 expressed in the base of second inflorescence, which is different with any other TCP domain genes.

原位杂交表明，Ljcyc5在次级花序（Ⅰ2）的基部表达，这与任何已知的TCP dmain基因的表达模式都不同。

The results as follow:(1) The resistance,which had a great inheritability,was controlled by both additive heredity and non-additive heredity,but the former was more important than the later.(2) Restorer's GCA was more important than CMS line's,but the later had significant effect on the resistance of its crosses.(3) K42A、K40A,Duohui No.1 and Chenghui 149 had better GCA of resistance to leaf blast than the other tested parents.

结果表明，杂交水稻苗瘟抗性遗传力高，受加性和非加性基因效应共同控制，但以加性效应为主；恢复系的苗瘟抗性一般配合力效应明显相对重要于不育系，不育系苗瘟抗性一般配合力效应对Fi代的抗性有显著的影响；14个供试亲本中，多恢1号、成恢149、H42A、K40A具有较好的苗瘟抗性一般配合力效应。

It was identified that male sterility of Tagetes erecta was Nucleo-Cytoplasmic interaction type with the characteristics of environment insensitiveness and stable inheritance, and was qualitatively controlled by a recessive gene in nucleus.

对雄性不育遗传规律进行了研究，对不同杂交组合亲本和子代的性状进行了分析，找到了一个重要的育性形态标记，即无花瓣型不育类型。

It enables scientists to transfer genes between different species that would not interbreed in nature .

它使科学家之间的转移基因的不同物种，不会杂交的性质。

Some species can interbreed with other related species, but the hybrids are often wholly or partially sterile.

还有一些相关物种之间可以杂交，但杂种是完全或相对不育。

Little is known about the reproductive habits; may interbreed with L. oculatus in the Apalachicola River drainage.

小繁殖的习惯而闻名，可能会与在阿巴拉契柯拉河道排水· oculatus 杂交。

The difference in mate preference could eventually lead to two distinct species, as in Costa Rica, with yellow and white butterflies that no longer interbreed.

交配取向的不同最终会使它们成为两个物种，就像在哥斯达黎加，黄色和白色的的蝴蝶已不再杂交。

The reproductive species concept focuses on the idea that species exist and maintain their genetic integrity and distinctness because they do not interbreed.

繁殖种的概念，集中在如下思想：物种延续并保持其遗传的完整性和独特性是因为不进行异种杂交。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！