查询词典 backcross

The result indicated, the CIMMYT forage characteristics of the overgrowth, strong tillerity and high yield could inherit to the offspring ,and the inherit ability was higher. It was obviously difference of seedling, plant, and its grow habit, flower apparatus and seed between CIMMYT forage and common maize. The hybrid offspring of CIMMYT forage and common maize keep the strong trait of growing and development, but the flower and seed character were look like common maize. The backcross offspring were not different to common maize besides with some tillers, distinct multi-ear and atavism.

结果表明，CIMMYT牧草能将其生长繁茂、分蘖力强、生物产量高的特性遗传给杂交后代，并有较强的世代传递能力；该牧草幼苗、植株及其生长习性、花器官、种子特征等与普通玉米差异明显，其与普通玉米的杂交后代基本保持了它的生长发育特性，但花器官和种子特征更偏向于普通玉米；回交后代除保持了一定的分蘖特性、明显的多穗和返祖现象外，其余特征特性与普通玉米基本没有区别。

The method can be conveniently applied to practical backcross breeding programs

该方法可以很方便地应用于实际的回交育种。

The utility of the limited backcross method for improvement of quantitative traits was discussed.

对采用不饱和回交方法改良数量性状进行了讨论。

Backcross A cross between an individual and an individual of the original parent generation.

回交：杂交产生的子一代个体再与其亲本进行交配的方式。

For this reason,in this type of species such as the silkworm,backcross population is generally used to map dmninant-recessive markers.

由于这个原因，作囤这类物种的遗传连锁图谱通常是使用回交群体。

Marker-assisted selection for protein content was conducted in backcross population in wheat.

对小麦回交后代的蛋白质含量进行了分子标记辅助选择研究。

In the BC3F2 populations of six varieties and CH448, the CRL variances of different backcross populations were different.

在不同供体品种与CH448的BC3F2群体中，不同回交组合内CRE的变异有所不同。

In order to enhance its resistance to bacterial blightand lepidopteran such as leaffolder, striped stem borer and yellow stem borer etc, we intergessed Xa21 and Bt genes into the genetic background of 93-11 by backcross scheme, combining with molecular marker-assisted selection and phenotypic selection. Through three backcross and two self generations, eight families that have homozygous Xa21 and Bt genes were obtained in the BC3F3 families. Two families show higher recovery percentage of 93-11 even up to 90.59%.

为了进一步提高其对白叶枯病的抗性、同时增加其对水稻鳞翅目害虫（如稻纵卷叶螟、二化螟和三化螟等）抗性，利用常规回交育种方法和结合分子标记辅助选择将Xa21基因和Bt基因同时导入93-11中，在BC3F3家系中筛选到8个家系含纯合的Xa21基因和Bt基因，其中有两个家系与93-11比较其遗传背景的回复率很高，达到90.59%。

Ninety-eight backcross inbred lines derived from a subspecific cross of Nipponbare/Kasalth// Nipponbare and its genetic linkage map were used to identify quantitative trait locus controlling rice appearance quality traits such as grain length, grain width, length-width ratio, percentage of grains with chalkiness, square of chalky endoperm, degree of endosperm and grain endosperm transparency by composite interval mapping over two year.

利用由98个家系组成的Nipponbare / Kasalath // Nipponbare回交重组自交系（backcross inbred lines，BILs）群体（BC1F9）及其分子连锁图谱，采用复合区间作图的方法，在2个不同年份对粒长、粒宽、粒形、垩白率、垩白大小、垩白度和透明度等7个稻米外观品质性状的数量性状基因位点（Quantitative trait loci， QTL）进行了定位分析。

Ninety-eight backcross inbred lines derived from a subspecific cross of Nipponbare / Kasalath // Nipponbare and its genetic linkage map were used to identify quantitative trait locus controlling rice appearance quality traits such as grain length, grain width, length-width ratio, percentage of grains with chalkiness, square of chalky endosperm, degree of endosperm chalkiness and grain endosperm transparency by composite interval mapping over two years.

利用由98个家系组成的Nipponbare / Kasalath // Nipponbare回交重组自交系（backcross inbred lines，BILs）群体（BC1F9）及其分子连锁图谱，采用复合区间作图的方法，在2个不同年份对粒长、粒宽、粒形、垩白率、垩白大小、垩白度和透明度等7个稻米外观品质性状的数量性状基因位点（Quantitative trait loci， QTL）进行了定位分析。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。