| 释义 |
back·cross 英ˈbækˌkrɔːs, -ˌkrɒs美ˈbækˌkrɔs, -ˌkrɑsAHDbăkʹkrôs', -krŏs' BNC⁶⁶⁵⁷⁴
基本英英搭配记法例句
v.使回交²⁰n.回交⁸⁰过去分词backcrossed现在分词backcrossing三单backcrosses
Verb:
mate a hybrid of the first generation with one of its parentsbackcross 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…
back-后面-cross十字⇒v.使回交n.回交⁸⁰ However, because of backcross between A and O. aurea and self- cross of B, the genetic structures of offsprings are more and more close to the maternal parent.
随着 A组合与母本的回交及 B组合的自交，又使得杂交子代的遗传结构向母本靠近。 cnki
So it was difficult to obtain seeds by backcross.
但受精指数仍然较低，很难获得回交种子。 cnki
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。 cnki
There is no difference among different backcross generations.
不同的回交世代缺绿无差异； cnki
To verify their segregation in other populations and to clarify the possible mechanism of SD,97 co- dominant markers of them were evaluated in another two backcross populations.
为阐明这些偏分离标记的遗传机制及其在其它群体中的偏分离情况，将其中97个共显性标记在另外两个回交群体中进行验证。211.155.251.148
A method to estimate the minimal sample size required for marker assisted backcross breeding when both foreground selection and background selection are conducted is proposed.
回交育种是把有利基因从供体亲本向受体亲本转移的一种有效方法，标记辅助选择可加速其进程。 dictall
It was concluded that the modified backcross method would short-en the duration of breeding.
初步认为，用修饰回交法能缩短年限； cnki
Keep the original strains going. After several generations you will need to backcross to one of the previous strains.
必须继续保留原线鱼种，因为经过异种杂交后往往需要原线鱼种做反交。360doc
Molecular marker- assisted selectionMAS 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。 dictall
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。 cnki
Seventeen selected AFLP primer combinations produced 1106 peaks, of which38434.7% 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%。 cnki
Single seed proteins of the high generation backcross of three Taigu male sterile wheats and their male parents were analysed using high resolution two dimensional gel electrophoresis.
应用高分辨率的蛋白质双向凝胶电泳技术，分析了三个太谷核不育小麦的高代回交材料及其相应父本的单粒种子蛋白。 cnki
The body weights and body sizes of positive and inverse backcross progeny of Charolais and Nangyang yellow cattle and Nangyang yellow cattle were compared.
本研究把夏南杂交的正回交后代、反回交后代及南阳牛的体重、体尺作了比较分析。 cnki
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。 cnki
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。 cnki
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。 cnki
Backcross makes a notable impact eff ection on improving fibre yield and long fibre content.
回交法对提高亚麻出麻率和纤维产量上效果显著。 cnki |