回交

基本解释 (translations)

backcross  ·  backcrossed  ·  backcrosses  ·  backcrossing

词组短语

rotation cross · backcross mating

与回交相关的网络例句 [注：此内容来源于网络，仅供参考]

In order to transfer successfully the useful traits from ryegrass to wheat, it is necessary that offspring was produced by continuous backcross.

为了使黑麦草的优良性状能最终转移到小麦中，需要用小麦不断地回交以获得回交后代。

The decomposition of chromosome was a main problem in construction of BAC library. DNA discompose would be avoided or decreased by adjustments of component and pH of chromosome extraction buffer or pre-electrophoresis for 6-8h before digestion. Identification of inter-species hybrids was a necessary step for creating a new germplasm. Two samples were selected from offspring of hybridization and backcross of a cross between cabbage and Chinese cabbage.

鉴定种间杂种是利用远缘杂交创造新种质时的一项重要工作，本研究运用细胞核DNA含量流式测定技术，对甘蓝和白菜杂交及回交各世代的DNA含量进行检测，以监控遗传物质在不同材料间的流向，并从回交二代植株群体中筛选了两个材料，具有和白菜差异不显著的DNA含量，可推断其为核质杂种。

The study suggest:(1) The observation of satellites in root tip and multiplex PCR makers could accurately identify the homozygous and the heterozygosis of 1BL/1RS translocation.(2) Through the restoring degree we could confirm the success of the transfer. The combination of the restoring degree and the agronomy property could increase the efficiency of practical application.(3) This study proposed the transformation from the physiological male sterile to the genetic male sterile, and then establish a method of utilize the strong superiority crosses.

其中复合引物PCR更适合于回交后代中大量目标种子的筛选；(2)恢复基因转育后代定株与不育系测交，依据测交恢复度可准确确定恢复基因在回交后代的延续，恢复基因定株定向转育与性状选择结合可大大提高转育后代的实际应用效果；(3)本研究提出的粘类小麦雄性不育恢复基因Rfv1定向转育体系，可有效地实现小麦由化控强优势组合向三系强优势组合的定向转化，即生理型不育途径向遗传型不育途径的定向转化，进而建拓一套杂交小麦强优势组合多途径利用新体系。

Juncen. The seed setting by backcross were even lower, only 0.35 and 0.33 per silique respectively, when using F1 with glufosinate-resistant gene and glyphosate-resistant gene as maternal plants and wild B. juncea as parental plant.

分别以两种F1为母本，野芥菜为父本进行回交，结实仍然很低，携带抗草丁膦基因的F1和携带抗草甘膦基因的F1与野芥菜回交每个角果饱满种子粒数分别只有0.35和0.33。

We also detected genomic changes which were possibly associated with the reduced fitness in backcross by amplified fragment length polymorphism. The changes mainly involved loss of parental AFLP bands (backcross1, F1 hybrid female×olive flounder male, 3.96%; backcross2, F1 hybrid female×summer flounder male, 6.03%) and gaining of novel bands (backcross1, 5.63%; backcross2, 3.28%).

同时，利用AFLP对回交子代基因组的变化进行了分析，发现回交中不仅存在亲本位点的丢失(褐牙鲆回交子代-回交1， 3.96%；夏牙鲆回交子代-回交2， 6.03%)的现象，也存在非亲位点(回交1， 5.63%；回交2， 3.28%)的现象。

Two parents,Balillaand Nantehao,which were significantly different on GT-ASV,were selected to construct a backcross population Balilla/Nantehao//Balilla containing 142 individuals.

选择在ASV-GT上具有显著差别的籼稻品种南特号和粳稻品种Balilla杂交，并以Balilla回交得到含有142株的回交群体。

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。

In order to improve the resistance to bacterial blight of high quality rice male sterile line Jinshan A , in this study, the Jinshan B and IRBB21 that carried gene Xa21 were used as parents to make backcrosses, and both foreground selection and background selection were carried out by means of marker assisted selection in the backcrosses.

本研究以IRBB21为Xa21基因的供体亲本，以金山B为轮回亲本进行回交，并应用分子标记辅助选择技术对回交各世代同时进行前景选择和背景选择，得到如下结果：(1)利用Xa21基因内的STS标记MXA21对各回交世代进行前景选择，得到了44个带有Xa21基因的BC_1单株和40个带有Xa21基因的BC_2单株。

In the backcross breeding of maize, the donor parent is suggested for consideration at priority, and backcrossing only once is acceptable on the basis of strict selection of target traits in combination with determination of GCA.

因此，利用回交法改良玉米自交系，在选准供体亲本的基础上，回交1次后，在自交过程中加强目标性状的鉴定选择及配合力测定，可提高回交改良的育种效率。

Breeding of transgenic rice restorer line for multiple resistance against bacterial blight, striped stem borer and herbicide(1) Transgenic rice line Zhongguo91 (carrying cry1Ab and bar gene) and elite restorer line Hui773 were crossed, then backcross was carried out three times using Hui773 as recurrent parent and self-cross was carried out one time.

多抗性(抗白叶枯、螟虫、除草剂)转基因水稻恢复系的培育(1)将恢773与携有转cry1Ab和bar基因的水稻新品系中国91(cry1Ab)杂交，并以恢773作为轮回亲本，连续回交三代和自交一代，对各回交世代的单株进行cry1Ab和bar基因的PCR分析、田间抗虫性鉴定和除草剂Basta抗性鉴定，经过选择获得了转基因水稻恢复系T773-1，田间种植对螟虫及除草剂Basta表现很好的抗性。

与回交相关的网络解释 [注：此内容来源于网络，仅供参考]

backcross：回交

2.同源导入近交系动物的保种和生产 同源导人近交系简称同源导入系,有时又译为基因导人系,是通过杂交与互交<CROSS-Intercross)、回交(backcross)等方式将一个目的基因导人某个近交系的基因组内,而培育出来的新的近交系.

backcross：回交,反交

backbone 脊柱 | backcross 回交,反交 | backswimmer 仰泳

backcross：回交;反交;逆代交

\\"脊骨;脊柱\\",\\"backbone\\" | \\"回交;反交;逆代交\\",\\"backcross\\" | \\"基础毁灭性\\",\\"background extinction\\"

backcross ratio：回交比率

回交亲本 backcross parent; recurrent parent | 回交比率 backcross ratio | 背景;基底 background

backcross ratio：回交率

backcross breeding 回交育种法 | backcross ratio 回交率 | backed bill 保证票据

backcross hybrid：回交杂种

回交 backcross | 回交杂种 backcross hybrid | 回交育种法 backcross method of breeding

backcross parent：回交亲本

backcourtman | (篮球队的)后卫 | backcross parent | 回交亲本 | backcross ratio | 回交比率

reciprocal backcross：交互回交;正反交

交互回交;正反交 reciprocal backcross | 正反配种 reciprocal ceoss | 交互神经支配 reciprocal innervation

backcrossing：回交

backcrossbreeding回交育种 | backcrossing回交 | backmutation回复突变

by selfting or backcrossing：通过自交或回交

by return of post ==> 请即回示 | by selfting or backcrossing ==> 通过自交或回交 | by single action ==> 单效压塑