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cross parents
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  杂交亲本
    Preliminary Studies on the Breeding Value of Sugarcane Variety ROC10 Used as Cross Parents
    甘蔗品种新台糖10号用作杂交亲本的育种效果初探
短句来源
    Basis on the succes of breeding and selection,discussions are emphasized as follows: 1.Selection of generations of cross parents containing different species consanquinity.
    在总结选育种成绩的基础上,重点探讨了:(1)杂交亲本含不同“种”血缘代数的选择;
短句来源
    For understanding the heritability of major characters and the combining ability of cross parents in spring wheat variety, the combining abilities of 6 major characters in 8 spring wheat varieties were tested on the Griffing's dialled cross design method II.
    为了解春小麦品种主要性状的遗传力和杂交亲本的配合力,按Griffing的第2种双列杂交设计方案对8个春小麦品种的6个主要性状进行了配合力测定。
短句来源
    The trial were conducted in seven ecological spots such as Changsha County, Ningxiang County, Nan Xian County, Lixian County of Hunan Province, Tongling City of Annuli Province, Yangzhou City of Jiangsu Province and Linqing City of Shandong Province in 2002, used 12 cross parents and 37 hybrid crosses including CK as studying materials, cluster analysis were carried though based on trial data of fiber quality characteristics recur to Excel and DPS, two kinds of professional statistical software.
    2002年,在湖南长沙、宁乡、南县、澧县以及安徽铜陵、江苏扬州、山东临清等7个地点.对12个杂交亲本以及包括对照中29在内共37个抗虫杂交组合进行了纤维品质比较试验.对试验所得纤维品质数据,用Excel、DPS等专业统计软件对杂交亲本、杂交组合及生态点进行聚类分析。
短句来源
    Anticipating genetic effect of parents and hybridization sets showed that Belershinuo was the best super quality material among cross parents and 29-1×Belershinuo set was better cross set.
    亲本和杂交组合遗传效应预测值表明,在纤维品质中贝尔斯诺是较好的杂交亲本,29-1×贝尔斯诺为较好的杂交组合。
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  “cross parents”译为未确定词的双语例句
    The results are as follows: twelve cross parents were divided into three groups, the first group includes five parents (A1, A6, A3, B7 and B11), another five parents (A2, B8, A5, B9 and B12) are included in the second group and the third group includes two cross parents, A4 and B10. Likewise, 37 hybrids were clustered into 4 groups;
    结果表明:12个亲本被分为3个类群,第一类包括5个亲本(A1、A6、A3、B7、B11),第二类包括5个亲本(A2、B8、A5、B9、B12),第三类包括2个亲本(A4和B10); 37个杂交组合(品种)被分为四个类群;
    According to the field research and SSR analysis of F2, it was found that the characteristic of early generation stability was inherited only in the cross between 429×9311. We inferred that the inheritance of early generation stability in rice was related to both cross parents.
    通过田间观察和分子标记的检测F2,结果发现在大量的杂交组合后代中,只有429×9311杂交组合后代仍具有早世代稳定特性,即早世代稳定特性在该杂交组合中遗传了下来,而其它杂交组合中,早世代稳定特性未能遗传下来,推测早世代稳定特性的遗传可能和杂交双亲均有关。
短句来源
    The results are as follows: Twelve cross parents were divided into three groups, the first group includes five parents (separately is Al, A6, A3, B7 and Bll), another five parents (separately is A2, B8, A5, B9 and B12) are included in the second group and the third group includes two cross parents, A4 and BIO; Likewise, 37 hybrids were clustered into 4 groups;
    结果表明:12个亲本被分为3个类群,第一类包括5个亲本(A1、A6、A3、B7、B11),第二类包括5个亲本(A2、B8、A5、B9、B12),第三类包括2个亲本(A4和B10);
短句来源
    APPLICATION OF THREE SMV NORTHEAST STRAINS FOR SELECTION OF CROSS PARENTS AND PROGENIES
    东北(SMV)三株系在大豆杂交亲本选配及后代选择应用的研究
短句来源
    Cross parents with negative combining ability should be selected such as Shangyu 397, Fuji Light and Dongnong 419 when developing low amylose content rice.
    、F。 代配合力效应负向明显的是上育397、富士光和东农419,可作为选育低直链淀粉含量为育种目标的理想亲本。
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  cross parents
Mitochondrial activity was assessed in two double-cross varieties of Zea mays, in their single-cross parents and in their inbred lines.
      
The applicability of this STS marker system to peach germplasm improvement was evaluated: genomic DNAs of cross parents (i.e.
      
To measure the anther culture properties of the cross parents, cv.
      
Every attempt should be made to cross parents with maximum diversity but within the limits of the market class.
      


Nine cross combinations were obtained by using Dwarf Yellow providedwith T_(-2nv)gene as central parent and 9 appropriate tomato cultivars as maleparents in order to investigate whether certain TMV-resistant hybrids(F_1)couldbe selected.The constant parent regression analysis was used in the presentstudy,and the combining ability,inheritance ability and other relative parame-tots were evaluated.The results indicated that cultivar Dwarf Yellow appeared to possess veryhigh combining ability,especially it was observed...

Nine cross combinations were obtained by using Dwarf Yellow providedwith T_(-2nv)gene as central parent and 9 appropriate tomato cultivars as maleparents in order to investigate whether certain TMV-resistant hybrids(F_1)couldbe selected.The constant parent regression analysis was used in the presentstudy,and the combining ability,inheritance ability and other relative parame-tots were evaluated.The results indicated that cultivar Dwarf Yellow appeared to possess veryhigh combining ability,especially it was observed in the early and total yield.Thus,this cultivar might be considered as one of the superior cross parents.Inaddition,9 combinations were compared each other with respect to som equan-titative characters,three of them i.e.Dwarf Yellow x Zao Fen No 2,DwarfYellow x Ning Hong No 2,Dwarf Yellow x Heinzi 370 were found to be better.

用含 Tm-2nv 基因的“矮黄”为中心亲本,与以适当的番茄品种作为父本,配制成9个杂交组合,以期选育抗 TMV 的番茄杂种一代。研究中采用同亲回归分析方法,并估算配合力、遗传力等遗传参数。试验结果表明,“矮黄”具有很高的配合力,尤其表现在早期产量和总产量,是一个优良的杂交亲本。并评价比较各杂交组合,初步选出矮黄×早粉二号、矮黄×宁红二号和矮黄×汉因茲三个组合。

According to the data of 12 quantitative traits of a random plot de-sign experiment of 20 varieties of Oryza sativa subsp. shien with 4 rep-eats, the canonical genetic distance among the varieties were estimatedand cluster analysis was done. Several parent combinations were determi-ned from different groups for reference in selecting cross parents.

本文根据20个籼稻品种4次重复的随机区组试验资料,估计出各品种间的典范遗传距离並进行了聚类分析,从不同类群中确定了若干距离大的亲本组合,可供选配杂交亲本时参考。

Study on chromosome behavior of meiosis of PMC in cultivated soybeans crossing with wild and semi-wild soybean was undertaken. The genome affinity index (GAI) and the chiasma frequency at diakinesis, can be taken as index for illistraing the relationship between allied species where they were used as crossing parents.The results observed have shown that there is normal meiosis behavior at metaphase I in all parents and most F1 hybrids, the chromosome configuration is 20 bivalents (ring and rod).Most...

Study on chromosome behavior of meiosis of PMC in cultivated soybeans crossing with wild and semi-wild soybean was undertaken. The genome affinity index (GAI) and the chiasma frequency at diakinesis, can be taken as index for illistraing the relationship between allied species where they were used as crossing parents.The results observed have shown that there is normal meiosis behavior at metaphase I in all parents and most F1 hybrids, the chromosome configuration is 20 bivalents (ring and rod).Most of the configurations are ring bivalent and few of them are rod bivalent in eleyen parents in a few PMC. The bivalents often have desynapsis. There is no univalent at metaphase I, the meiosis behavior is normal at anaphase I and second meiosis. The micronuclei in tetrads has not been observed. Number of bivalent of ring and rod is different at metaphase I in different cross parent and the affinity for crossing between different parents is different.The difference of meiosis behavior among thirteen crossing combination were observed. The chromosome pairing was not stable, where number of bivalent range from 18 to 20. A few bivalent hat desynapsis, but number of bivalent is 5-20, the highest number of bivalent of desynapsis is 15. A lagging chromosome at anaphase and afew micronuclei in tetradspore were observed.

本文研究了栽培大豆绥农4号等5个品种和1个品系分别与野生大豆、半野生大豆杂交,杂种F_1代花粉母细胞减数分裂的行为。以染色体组亲和指标,终变期二价体的交叉频率,鉴定杂交亲本的亲缘关系。 观察结果表明,杂交亲本和大部分杂种F_1代花粉母细胞减数分裂行为是正常的,减数分裂中期Ⅰ为20个二价体。11个亲本中期Ⅰ环状二价体占多数,少数为棒状二价体。有少数花粉母细胞出现二价体联会消失现象,中期Ⅰ没有单价体,后期Ⅰ和减数分裂Ⅱ均正常,四分孢子中无微核出现。杂交亲本中期Ⅰ环状二价体和棒状二价体的数目有差异,说明不同亲本的亲和力不同。 13个杂交组合F_1代的减数分裂行为有差异,染色体配对不稳定,二价体表现过早分离。如杂交组合中期Ⅰ二价体数在18—20之间,联会消失二价体数目较少。二价体数在5—20个之间,联会消失的二价体数目最多为15个。后期Ⅰ出现少数落后染色体,四分孢子内有少数微核。

 
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