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The wheat transformation frequency was between 0.33~0.66%, and cultivated time was only about 3~4 months.4 Through the hybridization of Anhui local wheat cultivated variety and the herbicide resistance variety which is including Bar gene by genetic engineering, the herbicide resistance F1 generation plant were obtained which was self-crossed or backcrossed with Anhui variety.

转化周期为3~4个月左右。4 杂交育种以含Bar基因的抗除草剂小麦基因遗传工程体为基因供体，与安徽品种进杂交，获得的F1后代均为抗性植株。

Generally, two hybridization events have happened in the generation of gynogenetic crucian carp: the first one occurred about 6, 000 years ago when maternal ancestor of C. a. gibelio hybridized with males of C. a. auratus (ancestor of C. a. colored variety) and a diploid hybrid was produced; the second one happened over 10, 000 years ago, when the diploid hybrid was backcrossed with one of its parental population, by which the current triploid gynogenetic crucian carp emerged.

初步推断出东北雌核生殖银鲫是通过鲫鱼种群间的两次杂交产生的，第一次杂交是母本的银鲫同源种群与父本的彩鲫同源种群杂交，形成二倍体杂种；第二次杂交是二倍体杂种与两个祖先鲫鱼种群之一回交，形成了今天的三倍体杂种银鲫。

Six plants of BC2F1 pyramiding Xa23 and IPT genes were further obtained in the combinations of "[(9311/// He'xi 15/CBB23//GC-1) 9311] 9311","[(E32/// He'xi 15/CBB23//GC-1) E32] E32". After backcrossed and self-crossed 1~2nd, the plants pyramiding Xa23 and IPT genes can be used in program of hybrid rice breeding.

携带IPT基因的抗病植株再与杂交稻亲本进行回交，在2个BC2回交组合&[（9311///合系15/CBB23//GC-1） 9311] 9311&和&[（E32///合系15/CBB23//GC-1） E32] E32&中获得了7株携带IPT基因与Xa23基因的植株，这些植株再经过1~2代回交和自交，即可用于杂交稻育种。

Cotton hybrids widely cultivated in Yangtze River Valley cotton-growing region or Yellow River Valley cotton-growing region such as Xiangzamian 2, Zhongmiansuo 28 and Wanza 40 were selected to construct self-pollinated or backcrossed populations.

选择在长江，黄河流域广泛种植的高优势棉花杂交种湘杂棉2号、中棉所28，皖杂40配置其自交和回交后代群体，利用多点试验，对其产量形成基因进行鉴定和QTL定位。

Dazicao, a native wheat variety with stripe rust resistance from Henan, China, was crossed with susceptible cultivar Mingxian 169 as the female parent. The F1 progeny was selfed to produce F2 progeny and backcrossed with Mingxian 169 to produce BC1 progeny.

以抗条銹病的农家品种大籽糙作父本、感病品种铭贤169作母本杂交获得F1代杂交种，F1代植株自交获得F2代种子，F1代植株与铭贤169回交获得BC1代种子。

Dazicao,a native wheat variety with stripe rust resistance from Henan,China,was crossed with susceptible cultivar Mingxian 169 as the female parent.The F1 progeny was selfed to produce F2 progeny and backcrossed with Mingxian 169 to produce BC1 progeny.

以抗条锈病的农家品种大籽糙作父本、感病品种铭贤169作母本杂交获得F1代杂交种，F1代植株自交获得F2代种子，F1代植株与铭贤169回交获得 BC1代种子。

Owning to a lack of crossing over in females, reciprocal backcrossed F1(BC1) progenies were used for linkage analysis and mapping of the I gene based on the SSR linkage map using silkworm strains Baghdad, which express white hemolymph, and KY, which express yellow hemolymph.

利用家蚕雌性不发生交换的特点，采用黄血黄茧品系KY和白血白茧品系巴格达特组配正反交群体×KY和KY×，分别记作BC1F和BC1M，根据已经构建的家蚕SSR分子标记连锁图谱对I基因进行了定位及连锁分析。

The analyses of multivariate partial correlation,path,correspondence and genetic correlation of twelve rice quality indexes were performed using Chenghui 448(CH448),5 maintainer lines,the progenies from Basmati 370 backcrossed by Chenghui 448(BC_2F_5) and the hybrids of 5 male sterile lines with the progenies.

米粒延伸性(cooked rice elongation，CRE)是稻米在蒸煮和食用过程中所表现的延展伸长特性，它和直链淀粉含量、糊化温度、胶稠度、香味等米质性状都是蒸煮食用品质综合评定的重要指标。

Accessions hybrid BC1 F2 were backcrossed, with two elite parents Diantun502 and Flcxi35 widely cultivated in Yunnan as recurrent parent, while 548 accessions core collection in Yunnan rice landrace as donors. Under natural low temperature 18.1℃ at booting stage, the genetic variation to main morphological characters of core collection hybrids in Yunnan rice landrace was analyzed between indica and japonica, rice cropping regions.

在昆明孕穗期平均温度181℃的自然低温下，以云南当家品种滇屯502和合系35作轮回亲本，以548份云南稻核心种质为供体亲本配制的杂种BC1F2（458份）为材料，按籼粳、稻作区进行云南稻核心种质杂种后代形态性状遗传变异研究。

Lysine content, kernel phenotype, zein accumulation and opaque-2 gene sequence of four maize inbred lines (CA335, CA339, Lu2548 and Qi205) were investigated in this study. These QPM inbred lines as the donor of Opaque-2 mutant gene (o2) respectively, were backcrossed to introgression o2 into elite maize inbred lines based on marker-assisted.

对CA335、CA339、山东2548和齐205等4个国内常用优质蛋白玉米自交系的赖氨酸含量、籽粒表型、醇溶蛋白积累及opaque-2基因的序列进行了分析；对不同自交系作为Opaque-2突变基因（o2）基因供体的分子标记选择效果进行了初步的比较。

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。