世代

By PCR analysis using specific primers, one specific band at 600~700 bp was distinctively present in cms backcrossed generations. It was genetically stable and cytoplasmically inheritable in the various backcrossed progenies.

根据Brassica nap型细胞质雄性不育相关基因orf222设计兼并引物，利用特异引物PCR方法，分别在不育源、F1、BC2以及BC3世代中扩增出一条600~700 bp 大小的特异条带，而在叶用芥菜保持系中无此条带，具细胞质基因遗传特性。

Their six generations F1, F2, backcrosses B1 and B2 and their parents P1 and P2 were used to study the inheritance of eggplant fruit color traits with joint analysis of multiple generations.

以3个果色不同的茄子栽培种自交系为试验材料，用色差仪和目测相结合的方法将果色分级，通过P1、P2、F1、B1、B2和F26个世代联合分析法，研究茄子果色性状的遗传规律。

Two tobacco F1 hybrids,F2s,backcrosses B1s and B2s and their parents P1 and P2 were used to estimate the gene effects for 7 agronomic and 4 quality characters.

利用红花大金元×青梗，红花大金元×中烟14号P1、P2、F1、F2、B1、B2 6个世代资料对7个农艺性状和4个品质性状进行了基因效应分析。

The inheritance of branch number and length of maize tassel was re-studied by means of a mixed inheritance models of quantitative traits of a major gene plus polygene based on parents, F_1, F_2 and backcrosses from two different combinations of maize.

以478×CMI312和丹340 ×CML322等两个组合的 6个世代（P_1，P_2，F_1，F_2，B_1，B_2）为材料，采用数量性状的主基因－多基因混合遗传模型，重新研究了玉米雄穗分枝数和雄穗长度的遗传。

The methods including backcrossing times, selecting generation were also discussed.

并讨论了改良不育系抗性的研究方法、回交次数和选择世代等问题。

With the increasing of directional backcrossing generationstransferred, variation coefficient and uniformity degree of different hybrid groupsdecreasing.

结果表明，随着定向回交世代的增多，杂交种群体内的变异幅度减小，群体整齐性逐渐提高。

On the basis of a simplified assumption that the target loci are introgressed and the genetic background are independent,the probability of selecting individuals with desired genotypes in each generation is approximately estimated combining analytical approach and simulation according to the graphic genotypes of backcrossing parents.The minimal sample size required to obtain at least one desired individual with a given probability is estimated.

在假定所需转移的目标基因座与遗传背景之间为相互独立的简化假设下，可以通过将解析方法与基于回交亲本图示基因型的模拟方法相结合，近似地估计出在每一世代中选到所需基因型的概率，进而估算出在一定概率水平下至少获得一个符合要求的个体所需的最小样本容量。

The results revealed that the QTL for fiber strength associated with three markers inherited steadily in different backgrounds and segregating generations. The mean difference of fiber strength between individuals of UBC301 and M07 markers were not decreased after several generations of selfing and backcrossing.

高强纤维主效QTL的分子标记辅助选择研究利用7235为亲本的四个不同世代组合的243个单株为材料，用2个RAPD标记UBC301、M07和1个SSR标记BNL1521开展与之连锁的高强纤维主效QTL的遗传稳定性及分子标记辅助选择的效果。

In which ,growth capacity and yearling weight in growth and calving interval in reproduction occupy relative larger economic weight.

现行的育种方案各选择组公母牛使用年限不合理，育种成效不甚理想，全群平均世代间隔7.270年，投入产出比为1：5.76 改进余地很大。3。

Look at strategy games like Rome: Total War, Age of Empires III, and the upcoming Company of Heroes. Games look good on PCs and will only get better, eventually passing and clobbering all consoles.

我们不会轻易信任那些PS3和XB360的开发小组放出的该平台早期的游戏画面，而且你看看前次次世代主机大战时的现象你就明确了。

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 。