详细释义
Verb:
-
mate a hybrid of the first generation with one of its parents
双语例句
- 1. The results were verified by backcross inheritance experiment.
- 上述结果通过回交试验得到进一步验证。
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- 2. The related techniques in backcross breeding were also discussed.
- 对回交育种中的有关技术也进行了讨论。
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- 3. 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。
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- 4. Alloplasmic male sterile line 034a was breeded by using method of distant hybridization and backcross.
- 通过萝卜远缘杂交创建不育源，再经过回交转育而选育出异源胞质不育系034a。
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- 5. Pedigree method, backcross method and convergent cross selection are used widely in dwarf maize breeding.
- 矮生玉米自交系的选育方法主要有系谱法、回交法和聚合选择法。
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- 6. Both the average number and length of introgressed segments decreased along with the increase of backcross generations.
- 统计分析表明，平均导入片段数和平均导入片段长度均随回交世代的增加而逐渐减少。
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- 7. The recombination rate of the target traits was higher in backcross generations than in the other segregation generations.
- 总粒数与其它性状相关不显著。目标性状的重组率以回交后代为高。
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- 8. Seventeen selected AFLP primer combinations produced 1106 peaks, of which 384 (34.7%) were polymorphic in a backcross family.
- 共得到1106个AFLP位点，其中有384个位点在亲本间有多态性，占总位点的34.7%。
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- 9. The results had been showed that male sterile lines has 100 percent rate for both the sterile plant and sterile degree in the different backcross generation.
- 研究结果表明，中八叶乌塌菜各回交后代不育株率和不育度均表现为100%，不育系在回交二代时外部形态接近轮回亲本。
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- 10. No significant differences in studied traits was obssrved among the groups with various genes, controlling erucic acid content(EAC)in the backcross generation.
- 回交世代不同芥酸含量的各组在产量和大多数其他性状上没有明显差异。
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- 11. The variance component of cross and backcross generations of quantitative character controlled by multigenes is studied on condition of chromosome translocation.
- 研究了染色体易位情况下，多基因控制的数量性状杂交及回交世代的方差组成。
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- 12. Molecular marker-assisted selection (MAS) provides a very efficient tool for backcross breeding because it can offer rapid and precise selection of the targeted gene.
- 分子标记辅助选择技术以其对目标基因快速而精确的选择为回交育种提供了非常有效的工具。
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- 13. The method using in vitro irradiation seems to be more effective than conventional irradiation, tissue culture or backcross for improving a few characters in a variety.
- 因此，对于品种个别性状的改造，离体辐照可能比其它方法更有效。
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- 14. Doing foreground selection of BC_1F_1 with polymorphic locus, 161 donor segment were detected, and doing background selection and backcross for plants containing donor segment.
- 利用所筛选的多态性标记对BC_1F_1群体进行前景检测，检测到161个供体片段，并对含有供体片段的单株进行背景选择和回交。
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- 15. Their F_2 is backcrossed with 7902- 4, and F_2 of this backcross is backcrossed again with 40354, and then selected by using the modified pedigree and bulk selection procedure.
- 回交亲本为7902-4和40354。杂种第二代用7902-4进行回交，回交第二代用40354再次回交，之后用改良系谱混合选择法进行选育。
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- 16. Two molecular methods were employed to successfully disclosed characters of the single hybrid zone: (1) this hybrid zone was composed of parental species, F1s, F2s and backcross derivatives;
- 我们通过分子测序和分子标记两种方法，揭示了该杂交区的性质：（1）该杂交区的构成是由亲本、F1代、F2代及回交后代组成；
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- 17. Two molecular methods were employed to successfully disclosed characters of the single hybrid zone: (1) this hybrid zone was composed of parental species, F1s, F2s and backcross derivatives;
- 我们通过分子测序和分子标记两种方法，揭示了该杂交区的性质：（1）该杂交区的构成是由亲本、F1代、F2代及回交后代组成；
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用法讲解
- backcross ratio 回交率
- second backcross generation 第二回交子代...
- backcross parent 回交亲本
- repeated backcross 重复回交
- recurrent backcross 相互回交
- backcross breeding 回交育种法
- first backcross generation 第一回交子代,回交一...
- backcross hybrid 回交杂种
- backcross mating [医] 回交, 逆代...
- third backcross generation 第三回交子代...
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