backcross

backcross

1. The resistant level was declined with increasing of backcross generations.

(2)在回交后代中，抗性水平逐代降低。

2. Backcross and hormone treatment have not succeeded in seeding, the chromosome doubling with the technique of the inflorescence culture is the reasonable method of resuming fertility to the hybrid.

5加拿大披碱草与老芒麦亲缘关系较远，用回交法和自然恢复育性的方法恢复育性有一定的困难，结合幼穗培养技术的染色体加倍方法是解决其育性问题的合理途径之一。

3. Performance of pest-resistance of the Bt transgenic rice plant in its first backcross progeny

Bt转基因水稻在回交一代的抗虫性表现

4. Detection of Homogeneity between Imported Grant Parent Layers Using Recessive Backcross and PCR-RFLP Techniques

PCR-RFLP和测交方法对进口祖代蛋鸡异性个体间的遗传同质性检测

5. Rapid Determination of HMW-GS Dx5 Gene for Early Evaluation of Backcross Progeny in Wheat by PCR

PCR法快速检测小麦回交后代HMW-GSDx5基因

6. backcross mating

[医] 回交, 逆代杂交

7. Analysis of a Mosaic Monosomic Alien Addition Line of Rice with Chromosome 7 of Oryza officinalis C-Genome and Its Backcross Progeny

一个嵌合型药用野生稻7号染色体单体附加系及其回交后代的分析

8. A Ph1-like Gene in Aegilops cylindrica and the Successful Backcross of Hybrids Between Ae.cylindrica and ph1b Mutant with Wheat

一个柱穗山羊草（Aegilops cylindrica）系统中的类Ph1基因

9. The double low vari ety used backcross male parent for double high GMS, the double low GMS had been bred through continuous backcross, at the same time, the double low hybrid has be en bred.

以现有的双低品种为回交父本，将双高核不育材料转育成双低核不育系，并已配制出了双低杂交种。

10. Keywords Sparse mouse;Hairless mouse;Inbred strain;Backcross;Autosome;

关键词稀毛鼠;裸鼠;近交系;回交;常染色体;

11. Male sterile line mainly came from the natural mutant, and then transformed sterile line and maintainer line by backcross.

其胞质雄性不育源大多来自自然突变，后经回交转育出不育系和保持系。

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。

13. Modified Backcross Pyramiding Breeding with Molecular Marker-Assisted Selection and Its Applications in Cotton

分子标记辅助选择的修饰回交聚合育种方法及其在棉花上的应用

14. Individual plant backcross

分株回交

15. LIU Z.LI P.ARGUE BJ Inheritance of RAPD markers in channel catfish (Ictalurus punctatus),blue catfish (I.furcatus),and their F1,F2 and backcross hybrids 1998(1

刘萍.孟宪红.庄志猛.孔杰.王伟继.焦传珍.相建海3种对虾种间RAPD遗传标记2002(2

16. Gene expression of two Chinese cabbage backcross hybrid BC1, BC2 and their parents at bud stage was analyzed by means of cDNA-AFLP technique.

利用cDNA-AFLP技术对两种材料的不同回交世代BC1、BC2代与其亲本在蕾期的基因表达进行分析。

17. The SSR Marker of the Female Sterile Gene in Wheat by Backcross Population Analysis

利用回交群体对小麦雌性不育基因的SSR标记

18. Detection and Analysis of QTL for Resistance to Stripe Disease in Rice, Using Backcross Inbred Lines

利用回交重组自交群体检测水稻条纹叶枯病抗性位点

19. See backcross.

参见backcross.

20. double backcross

双反交

21. fly backcross

反激式

22. At the same time the applications of the method in the different segregating generations such as the F2、 backcross、 RIL、 DH and so on were introduced and compared.

同时概述了集群分离分析法在F2代、回交、双单倍体、重组自交系等不同分离群体中的应用情况，并对不同分离群体的优缺点进行了比较。

23. The ratios of the sterile plants with the fertile plants in their F1, F2 generations, and their reciprocal backcross generations with the male sterile plants were calculated.

同时，以具有正常细胞质的自交系为母本，育性完全恢复的测交F1植株为父本进行反交，对其反交的F1及F2进行育性观察分析。

24. backcross allele management

回交, 等位基因操纵

25. the first backcross generation

回交一代

26. 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。

27. backcross parent

回交亲本

28. backcross analysis

回交分析

29. Backcross posterity

回交后代

30. The morphologically anatomical structure of seed coat of backcross progenies resembled that of B. napus, but was different from that of S. alba.

回交后代种皮解剖结构与甘蓝型油菜相似，而与白芥相差较远。

31. Distribution of frequencies increment of backcross homozygotes

回交后代纯合体频率递增量的分布规律

32. Backcross progenies

回交子代

33. backcross quantitative trait

回交定量性状

34. Backcross introgression

回交导入

35. Identification and Screening of Favorable Genes from Rice Germplasm in Backcross Introgression Populations

回交导入后代水稻种质有利基因的鉴定与筛选研究

36. Backcross introgression lines

回交导入系

37. backcross restoration gene

回交恢复基因

38. backcross hybrid

回交杂种

39. backcross nucleus substitution

回交核置代

40. backcross method

回交法

41. backcross ratio

回交率

42. Backcross population

回交群体

43. Keywords backcross breeding;marker assisted selection;sample size;

回交育种;标记辅助选择;样本容量;

44. 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。

45. backcross breeding

回交育种法

46. backcross inbred lines

回交自交系

47. backcross inbred lines;

回交自交系;

48. Segregation Analysis of Quantitative Traits in Backcross Inbred Line Population

回交自交系群体数量性状遗传体系的分离分析方法

49. backcross pedigree writing

回交谱系书写

50. backcross selection

回交选择

51. Backcross selected introgression lines (SBILs)

回交选择导入系

52. backcross genetic composition formula

回交遗传成分公式

53. Backcross inbred lines (BILs)

回交重组自交系

54. Backcross A cross between an individual and an individual of the original parent generation.

回交：杂交产生的子一代个体再与其亲本进行交配的方式。

55. In the BC 3 F 2 populations of six varieties and CH448, the CRL variances of different backcross populations were different.

在不同供体品种与CH448的BC3F2群体中,不同回交组合内CRE的变异有所不同.

56. Keywords Complex Trait;Recurrent Selection and Backcross （RSB）;QTL Mapping;Saccharomyces cerevisiae;Ethanol Tolerance;

复杂性状;重复选择回交;QTL定位;酿酒酵母;乙醇耐受性;

57. Meanwhile,backcrossing females 3n AASCC (F 1- similar to ASCC) to faternal parent 3n=156 ASCC could produce first backcross generation (B 1 ASCC being very similar to faternal parent ASCC).

它与父本异育银鲫回交可以产生回交子一代 (B1)。 雄核发育异育银鲫、回交子一代异育银鲫与父本异育银鲫非常相似。

58. Meanwhile,backcrossing females 3n AASCC (F1- similar to ASCC) to faternal parent 3n=156 ASCC could produce first backcross generation (B1 ASCC being very similar to faternal parent ASCC).

它与父本异育银鲫回交可以产生回交子一代(B1)。雄核发育异育银鲫、回交子一代异育银鲫与父本异育银鲫非常相似。

59. Statistical genetic analyses were conducted on the data of 4 populations with 2010 litters including Erhualian pig (P1), Large White(P2), first cross(F1) and backcross(B2).

对二花脸猪、大白猪、杂交一代和回交一代四个群体共计2010窝产仔数的资料进行了统计遗传分析。

60. The utility of the limited backcross method for improvement of quantitative traits was discussed.

对采用不饱和回交方法改良数量性状进行了讨论。

61. Transfer of Xa 21 gene resistant to bacterial blight for rice through backcross and anther culture.

应用回交和花培转育水稻抗白叶枯病基因Xa-21

62. The Selection of Sterile Line of Fiber Flax by Backcross

应用回交转育法选育纤维用亚麻不育系

63. 4.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。

64. The ratio of resistant and susceptible plants was 1:1 in progenies of backcross of the F1 and susceptible parents, and this ratio was 2.8:1 in the F2 generation from the F1 selfing.

抗性稳定株系与感病亲本杂交，F1表现高抗病，再与感病亲本回交，后代抗感病株比例为1:1，自交F2的比例为2.8:1。

65. Backcross breeding is a useful method to transfer favorable alleles from a donor parent into a recipient parent.Marker-assisted selection (MAS) can speed up the process.

摘要 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。

66. Conditional distribution was derived for the genome composition given the marker genotype of individuals from a backcross population.

摘要 推导了回交群体中供体基因组成分的条件概率分布,并用平均数预测各个体的供体染色体片段的大小。

67. CMS line 803A was developed by the recent discovery of JW new nature source sterile through many continuous generation of backcross with the L301B/Di Gu B hybrid descendant.

摘要不育系803A是利用新发现的JW型新质源不育株做母本，L301B/地谷B的杂交后代做父本，经连续多代回交选择而成。

68. BC1 plants of the backcross of two sweet potato varieties, Jinshan57' (yellow flesh) and Longshu9' (orange flesh), were used to screen RAPD markers linking to the sweet potato's flesh color.

摘要以甘薯品种金山57（黄肉）和龙薯9号（桔红肉）的30株回交BC1代为试验材料，采用RAPD分子标记技术寻找与甘薯肉质颜色性状相连锁的分子标记。

69. Dwarfing-sterile wheat was changed from winterness to springness by continue backcross.

摘要利用连续回交手段将矮败小麦由冬性转育为春性。

70. Abstract： Chlorophyll content was measured in melon, watermelon, cucumber and pumpkin,and F1, F2 and BC1 (backcross) of melon.

摘要：以不同甜瓜、西瓜、黄瓜、番瓜品种和甜瓜杂交F1、F2及回交后代为实验材料，测定叶片叶绿素含量。

71. Methods The mice were bred in different ways,including crossbreed,backcross and intercross.

方法采用杂交、回交、互交的方法进行培育;

72. Xu 29A,developed from the cross and backcross of V20A//(Digu B/Jin 23B) F3 by the Hunan Hybrid Rice Research Center,is a new early-season indica CMS line in rice.

旭29A是湖南杂交水稻研究中心用地谷B作母本与金23B杂交,F3代选优良株系与V20A测交并经多代回交转育而成的早籼稻不育系,2000年3月通过湖南省农作物品种审定委员会审定。

73. Preliminary Report on Improvement Result to Popcorn Using Normal Corn Germplasm and Backcross

普通玉米种质及双回交对爆裂玉米改良效果初报

74. The Variance Componentof Cross and Backcross Generation of Multigenes on Condition of Chromosome Translocation

染色体易位情况下多基因杂交及回交世代的方差组成

75. There were pigments in seed coats of B. napus and some backcross progenies, but no pigments in those of S. alba and other backcross progenies.

栅栏层在甘蓝型油菜中最厚，在白芥中最薄，而后代介于两者之间。

76. Approximate Estimation of Minimal Sample Size Required for Marker-Assisted Backcross Breeding

标记辅助回交育种中所需最小样本容量的近似估计

77. Detection of Genetic System of Quantitative Traits Using Backcross and Selfing Families

植物数量性状遗传体系检测中回交或自交家系重复试验数据的分析方法

78. Keywords rice;sheath blight;quantitative trait genes;backcross;marker-assisted selection;

水稻;纹枯病;数量性状基因;回交;分子标记辅助选择;

79. Analysis of Cooked Rice Elongation of Core Germplasm in Rice and the Backcross Progenies of Indica Restore Line Chenghui 448

水稻核心种质及成恢448回交后代的稻米延伸性研究

80. Genetic Analyses of Salt Tolerance in an Advanced Backcross Population of Rice

水稻高世代回交导入系耐盐性的遗传研究