基因渗入

The yield, quality, resistance and chromosome characteristics of the hybrids were analyzed, and the improvement of the grasses using gene introgression, androgenesis and genetic modification methods was introduced. The latest advance in GISH, genetic map construction and QTL of Festulolium hybrids were described here.

本文总结了黑麦草羊茅杂种高产、优质、抗性强的优势；分析了杂种染色体配型特点；重点介绍了通过基因渗入、雄核发育和转基因手段改良牧草的方法；对黑麦草羊茅杂种基因组原位杂交、分子标记和遗传图谱建立、数量性状位点分析等分子遗传学的最新研究进展进行了综述。

More and deeper research should be continued if we want to get specific answer to some questions, for example, which wild capra maternal origins contributed to chinese domestic goats?

但中国家养山羊有哪些母系来源，野生种间是先杂交、再家养，还是先有独立的起源、后来再有野生种的基因渗入等需要进一步研究。

However this barrier leaks as a result of rare incidences of misimprinting on song,which can lead to hybridization and introgression under some ecological conditions but not others.

但是在一些特殊的生态条件下，生殖隔离可以被由于错误印痕所形成的鸣叫而冲破，导致种间杂交和基因渗入，当然，这种情况非常罕见。

Some degree of gene flow may be a normal, evolutionarily constructive process, and all constellations of genes and genotypes cannot be preserved however, hybridization with or without introgression may, nevertheless, threaten a rare species' existence.

某种程度的基因流动是正常的、积极的进化过程；不可能所有基因和基因型的排列格局都被保存；但是，有或无基因渗入的杂交会威胁珍稀物种的生存。

Some species of sturgeons are polypolids. The hybridization is common even between genera Acipenser and Huso. The parents of different species with the same chromosome numbers will produce reproductive offsprings, and thus, genetic introgression among species would easily happen in the nature conditions.

鲟具有多倍体特徵，其中鲟属及鳇属杂交的情形非常普遍，染色体倍数相同的亲代杂交产生的子代具有繁殖力，因此在自然情况下或人为移殖时很容易造成基因渗入现象。

The progress of research on transferring elite genes from non-AA genome wild rice into Oryza sativa through interspecific hubridization are in three respects, that is, breeding monosomic alien addition lines, constructing introgression lines and analyzing the heredity of the characters and mapping the relative genes.

利用种间有性杂交向栽培稻转移非AA组野生稻有利基因的研究在三个方面取得进展，即单体异附加系的培育、渗入系的建立以及有利性状的遗传及基因定位。

In bud stage of mustards ecotype Xuelihong and Yuanyejie were transformed with in planta vacuum infiltration by an Agrobacterium tumefaciens strain GV3101 carrying hy-gromycin resistance gene. Effects of different factors on transformation frequency with in planta vacuum infiltration were studied.

以蕾期的芥菜生态型雪里蕻和圆叶芥为试材，在携带潮霉素磷酸转移酶标记基因的根癌农杆菌菌株GV3101的介导下，对影响芥菜植株原位真空渗入遗传转化效果的真空渗入时间、根癌农杆菌悬浮孢子的浓度、渗入培养基、感染方式以及根癌农杆菌菌株等进行研究。

However, the number of genes introgress into rice genome through HGT is still not investigated.

对于通过水平基因转移渗入水稻基因组的基因数至今仍没有研究。

Infiltration of the genes of one species into the gene pool of another through repeated backcrossing of an interspecific hybrid with one of its parents.

基因渗入一物种的基因通过不断地与另一物种基因的亲代种间逆向杂交，而渗透进另一物种基因库的过程

In this study, we use both morphological and molecular (mtDNA Cyt-b) methods to identify the exotic sturgeons in Taiwan and both the phylogeny and the genetic introgression of the fish were analyzed meanwhile.

本研究以分子遗传学方法(mtDNA Cyt-b)辅以形态学方法鉴别台湾引进的鲟种类，并探讨鲟的类缘关系以及因杂交而造成的基因渗入现像。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。