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一般配合力     
相关语句
  general combining ability
    A New Tool for Tester of General Combining Ability in Production of Wheat Varieties——Taigu Nucleus-sterile Wheat
    创造小麦品种一般配合力测验种的新型工具——太谷核不育小麦
短句来源
    Difference of general combining ability (GCA) and specific combining ability (SCA) among varieties were highly significant. V.SCR had the highest GCA, followed by VAM, which were the high-value parents for PVYN resistant, while K326 had the lowest GCA, followed by NC95, which were the low-value parents.
    参试品种间一般配合力(GCA)和特殊配合力(SCA)存在极显著差异,V.SCR的GCA最高,其次是VAM,是对PVYN抗性的高值亲本,K326的GCA最低,其次是NC95,是对PVYN抗性的低值亲本。
短句来源
    The results showed that the variance analysis were very significance for the effect of general combining ability(GCA), special combining ability(SCA)and reverse crossittg(R)of Grain weitght(mg)/cm2'leaf, their mean square(MS)ration was 1.9465: 0.6700: l.
    结果表明:粒重叶比的一般配合力(GCA)效应,特殊配合力(SCA)效应和反交(R)效应,均达到极显著水平,其均方比为1.9465:0.6700:1;
    The difference of general combining ability (GCA) and specific combining ability (SCA) among varieties were highly significant. V.SCR had the highest GCA, followed by VAM, were high value parent for PVYN resistant, K326 had the lowest GCA, next was NC95, were low value parent for PVYN resistant.
    参试品种间一般配合力(GCA)和特殊配合力(SCA)存在极显著差异,V.SCR的GCA最高,其次是VAM,是对PVYN抗性的高值亲本,K326的GCA最低,其次是NC95,是对PVYN抗性的低值亲本。
    5. The three CMS lines, Zhenshan 97A, Longtepu A, and K18A, and the three restorers, Minghui 63, Zhilong, and 1025 show good general combining ability (GCA). Hybrids from them show generally high heterosis.
    5、三个三系不育系珍汕97A、龙特浦A、K18A和三个恢复系明恢63、直龙、1025的一般配合力高,利用它们容易配制出强优势杂交组合。
短句来源
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  gca
    (3) the yield and its relative characters of GCA and SCA were the best for 99A01-3 in sterile lines and RS03-1 in restoring lines;
    (3)产量及其相关性状的一般配合力和特殊配合力不育系以99A01-3较好,恢复系以RS03-1较好。
短句来源
    Difference of general combining ability (GCA) and specific combining ability (SCA) among varieties were highly significant. V.SCR had the highest GCA, followed by VAM, which were the high-value parents for PVYN resistant, while K326 had the lowest GCA, followed by NC95, which were the low-value parents.
    参试品种间一般配合力(GCA)和特殊配合力(SCA)存在极显著差异,V.SCR的GCA最高,其次是VAM,是对PVYN抗性的高值亲本,K326的GCA最低,其次是NC95,是对PVYN抗性的低值亲本。
短句来源
    The results showed that the variance analysis were very significance for the effect of general combining ability(GCA), special combining ability(SCA)and reverse crossittg(R)of Grain weitght(mg)/cm2'leaf, their mean square(MS)ration was 1.9465: 0.6700: l.
    结果表明:粒重叶比的一般配合力(GCA)效应,特殊配合力(SCA)效应和反交(R)效应,均达到极显著水平,其均方比为1.9465:0.6700:1;
    The difference of general combining ability (GCA) and specific combining ability (SCA) among varieties were highly significant. V.SCR had the highest GCA, followed by VAM, were high value parent for PVYN resistant, K326 had the lowest GCA, next was NC95, were low value parent for PVYN resistant.
    参试品种间一般配合力(GCA)和特殊配合力(SCA)存在极显著差异,V.SCR的GCA最高,其次是VAM,是对PVYN抗性的高值亲本,K326的GCA最低,其次是NC95,是对PVYN抗性的低值亲本。
    3. The SCA effect was important in the heterosis of the spike number per plant of the intervarietal hybrid, the SCA and GCA were both important in the heterosis of the grain number of main spike of the intervarietal hybrid;
    3.普通小麦品种间杂种每株穗数杂种优势中,特殊配合力所代表的非加性遗传效应起了主要作用,而主穗粒数杂种优势中一般配合力、特殊配合力所代表的加性、非加性遗传效应所起的作用相当;
短句来源
更多       
  general combing ability
    The general combing ability of Wujin 4A was as same as Zhenshan97A, II-32A and Peiai64S. The special combing ability was similar to Zhenshan97A, but significantly higher than II-32A and Peiai64S.
    斑马叶片标记性状武金4A与珍汕97A、Ⅱ-32A、培矮64S 3个不育系相比,一般配合力效应值没有明显差异,其特殊配合力方差与珍汕97A同属一个水平,显著高于Ⅱ-32A和培矮64S。
短句来源
    The results showed that the average value of the general combing ability(GCA) that Maize inbred lines possessed tropical and subtropical germless(0.071)were higher than Temperate zone inbred lines(-0.047).
    试验结果表明,含热带、亚热带种质玉米自交系的平均一般配合力效应值(0.071)较温带自交系的平均配合力效应值(-0.047)高;
短句来源
    The results are summarized as follows: There is significant difference among the general combing ability effects (GCA) of the four quality characters.
    结果表明:各性状的一般配合力效应比较稳定,特殊配合力差异较大;
短句来源
    The combing ability of 7 main agronomic characters was analyzed in this paper with NC II device in the Cytoplasmic of Chinese sorghum and Al Cytoplasmic The results indicated as follow:The general combing ability was controlled by nucleus gene,but Cytoplasmic gene affected the expression of nucleus genes.
    按不完全双列杂交法对中国高粱细胞质和A1型细胞质进行了生育期等7个主要农艺性状的配合力分析。 结果表明:一般配合力主要受核基因控制,但胞质基因对核基因的表达也有一定的影响。
短句来源
    It was found that three varieties, Henong2552, 93shi6 and Xianyangdasui, were with high general combing ability and thus could be used as parents of good quality and early, medium and late maturity respectively.
    结果表明,河农 2552、93试 6和咸阳大穗3个品种的一般配合力较好,可分别作为早、中、晚熟的优质亲本资源。
短句来源
更多       
  general combining abilities
    The results showed that: (1) general combining abilities(G.C.A) of grains yields of BSSSR, BSL, BS30, BS16 and BSTL were relatively higher than the other germplasms;
    研究结果表明:(1)BSSSR、BSL、BS30、BS16和BSTL产量一般配合力相对较高; 产量特殊配合力效应值居于前几位的组合有:BS29?
短句来源
    In Misuizao (parent 1), the general combining abilities of spikelets, number of grains per spike of treated F_1and number of spikelets, number of grains perspike, protein content and SDS sedimentation value of treated F_2were heightened.
    其次为密穗早(亲本1)M_1F_1代的小穗数、穗粒数和M_2F_2代的小穗数、穗粒数、蛋白质含量和沉淀值都提高了一般配合力
短句来源
    Malesterile lines SE152,LongtepuA,SE21s and restoring lines Minghui86,Minghui63 were good in general combining abilities for grains weight per plant andother main agronomic characters.
    不育系SE152、龙特浦A、SE21s和恢复系明恢86、明恢63具有较高的单株产量一般配合力
短句来源
    1. Combining abilities of 34 inbred lines are analysised using their 222 cross combinations. The results showed that general combining abilities of not less than one of parents are high in high-yield cross combinations, and their special combining abilities are generally high.
    1.在34个自交系所得的222个杂交组合中,对产量及其它相关性状进行配合力分析,结果表明,在产量较高的杂交组合中,至少有一个亲本的一般配合力较高,相应的特殊配合力也较高;
短句来源
    The inbred line Liyuan 92's general combining abilities of plant height and root length were higher than other inbred lines at lower Zn concentration.
    在低锌浓度下自交系鲁原92的株高和根长的一般配合力明显高于其它自交系。
短句来源
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      general combining ability
    However, the characteristics of androgenesis were the highest in those hybrid combinations in which genotypes with high values of general combining ability (GCA) and positive effects of specific combining ability (SCA) participated.
          
    Attempts to construct synthetic populations by combining self-fertile forms selected by general combining ability failed because of high-rate selfing.
          
    General combining ability effects were more important for both characters.Per se performance appeared to be a good index to rank the parental lines for general combining ability.
          
    The study indicated that both general combining ability and specific combining ability effects were significant and important for all three traits.
          
    General combining ability seemed to be more important for all the characters.
          
    更多          
      gca
    However, the characteristics of androgenesis were the highest in those hybrid combinations in which genotypes with high values of general combining ability (GCA) and positive effects of specific combining ability (SCA) participated.
          
    chthonoplastes was localized, at least partly, in a vast glycocalix (gCA) as shown by Western blotting and the measurement of enzyme activity in the isolated glycocalix preparations.
          
    chthonoplastes with the antibodies against thylakoid CA from Chlamydomonas reinhardtii (Cah3) demonstrated that gCA belongs to the α-type of enzyme and has the structure identical to that of Cah3.
          
    This paper presents pattern formation in generalized cellular automata (GCA) by varying parameters of classic "game of life".
          
    The influence of remembrance of dynamic behavior of GCA is also studied.
          
    更多          
      general combining ability (gca)
    However, the characteristics of androgenesis were the highest in those hybrid combinations in which genotypes with high values of general combining ability (GCA) and positive effects of specific combining ability (SCA) participated.
          
    General combining ability (GCA) was found to be the largest and most significant source of variation contributing to differences between crosses for all the traits, in both male and female birds.
          
    No clear association could be discerned between general combining ability (GCA) effects for grain yield and its components, and mean grain yield performance and GCA effects.
          
    The S5 partial diallel was as good as the S19 for the detection of differences among general combining ability (GCA) effects.
          
    General combining ability (gca) was significant for all five characters; specific combining ability (sca) was significant for stalk diameter, stalk length, and plant volume.
          
    更多          
      其他


    Heterosis and genetic variance component studies on 36 wheat crosses and 14 parentsrevealed that:1.Yield per plant,kernels per spike and kernel weight of F_1 hybrids showed a markedheterosis over mid-parental values by 20-30%.Plant height and date of heading ranked next,which averaged about 10% in magnitude,being negative in direction for heading date.Fertilespikelets per head manifested only a slight degree of heterosis.F_(1-)MP's for these characterswere highly significant as shown by t-tests.However,head...

    Heterosis and genetic variance component studies on 36 wheat crosses and 14 parentsrevealed that:1.Yield per plant,kernels per spike and kernel weight of F_1 hybrids showed a markedheterosis over mid-parental values by 20-30%.Plant height and date of heading ranked next,which averaged about 10% in magnitude,being negative in direction for heading date.Fertilespikelets per head manifested only a slight degree of heterosis.F_(1-)MP's for these characterswere highly significant as shown by t-tests.However,head length,kernel weight per head andheads per plant showed,on the average,no heterosis.2.Variability of heterosis of these characters descended in the following order:yield perplant→heads per plant,fertile spikelets per head→kernel weight per head,kernel perhead→kernel weight→heading date→head length,plant height.3.Heritability estimates (in the broad sense) as analyzed from F_1 data were from highto low as follows:head length→plant height→kernel weight→kernel weight per head→kernel per head,fertile spikelets per head→heads per plant,yield per plant.4.Relative values of general comining ability (g.c.a.) from high to low were as follows:head length,fertile spikelets per plant→plant height,kernels per head→kernel weight perhead→kernel weight,heads per plant→yield per plant.For yield per plants,specific com-bining ability played an important role.5.There was a close relation between the general combining ability value and the cor-relation or regression coefficient of F_1 on m(?)d-parental values.The larger the g.c.a.value,the higher the correlation or regression coefficient,indicating that many characters of F_1 hybridswere determined to a certain extent by parental means.The r or b value became non-significantas the g.c.a.decreased below 40%.6.In predicting the breeding value of parents or hybrid combinations,actual performanceof F_1 hybrids should be emphasized first.The extent of heterosis might also be of value,sincea part of heterosis arisen from epistasis could be fixed in later generations.Mid-parentalvalues were of considerable importance.

    本文通过优势和配合力的分析研究小麦亲本选配问题。试验表明:杂种第一代的一株粒重、一穗粒重、千粒重的优势最大,一般比两亲平均值大20—30%;其次为株高和抽穗期:其他穗部性状的优势很小或无显性。应用遗传变量成分分析法估算八个性状的配合力,在供试的亲本中,以穗长和结实小穗数的一般配合力为最大;株高、一穗粒数和一穗粒重次之;千粒重与一株穗数,一般配合力和特殊配合力所占的比重互有高低,因组合类型而异;一株粒重的一般配合力最小,它的特殊配合力占居主导地位。一般配合力大的性状,杂种与两亲平均值的相关或迴归系数也大。初步认为,在第一代对亲本或组合的评价,既要看杂种的实际表现,还要考虑它的优势,而以前者为主要依据;两亲平均值也有相当重要的意义。

    The salted Chinese cabbage is a special type for salting processes of the Pak-Choi Chinese cabbage. Four representative varieties from the lower valley of Yangtze-Hwai river, i. e., Nanking Kao-Zhuon, Hanchow Pio-Keng-Bai, Kaochun Ma-Er-Dor and Yanchow Hwa-Yi-Da-Tsai, were chosen for a diallel crossing experiment according to Griffing's method one (model 1). The field experiments were held in Nanking in 1974 and in Nanking and Yanchow respectively in 1975.1. Generally, the yield, downy mildew-resistance, virus-resistance...

    The salted Chinese cabbage is a special type for salting processes of the Pak-Choi Chinese cabbage. Four representative varieties from the lower valley of Yangtze-Hwai river, i. e., Nanking Kao-Zhuon, Hanchow Pio-Keng-Bai, Kaochun Ma-Er-Dor and Yanchow Hwa-Yi-Da-Tsai, were chosen for a diallel crossing experiment according to Griffing's method one (model 1). The field experiments were held in Nanking in 1974 and in Nanking and Yanchow respectively in 1975.1. Generally, the yield, downy mildew-resistance, virus-resistance and bacterial soft rot-resistance of the salted Chinese cabbage F1 all show the mid-type of their parents, and no significant differences between each pair of reciprocals. There are some crosses with heterosis and some with reciprocal effect, but some are not consistent between different years or locations. After comparison, Kao × Pio (of entire leaf type with white flat petiole), was selected for Nanking region, and Pio X Hwa and Hwa × Kao (of deeply flaky leaf type with white round petiole), for Zhangkian-Yanchow region because of their moderate disease-resistance and high yielding ability by transgressing upper parent 20.1-22.1%, 12.7-21.6% and 6.0-31.3% respectively.2. As for yield the significance of g.c.a. and of s.c.a. are consistent between two years, but the reciprocal effectsare not. There are greater and shifting s.c.a. for Kao and Pio, greater g.c.a. and stable s.c.a. for Hwa. These three varieties are all better parents, when used in crossing the reciprocal effect should not be neglected.3. In yield component of three selected crosses there are significant s.c.a. and r for Kao ×Pio and r for Pio×Hwa, but not for Hwa × Kao besides the significant g.c.a. for them. The g.c.a., s.c.a. and r all should not be neglected in the design of crossing because of different crosses having their own specialities.4. The estimates of heritability for yield in broad sense are about 76.7-81.7% indicating the possibility of high yielding crosses to be persistent from year to year.

    本文旨在分析江淮下游酶白菜代表品种的杂种优势与配合力。产量、抗病性的杂种优势因组合、正反交而异。有些组合的表现还因年份、地点等环境条件而不同。评选出优势强而稳的高×瓢、瓢×花、花×高组合可供生产应用。亲本间在一般配合力、特殊配合力以及它们的波动程度上都有各自的特点,选配组合时对一般配合力、特殊配合力以及正反交效应都需注意。产量杂种优势利用的广义遗传力估计值为76.7—81.7%。

    Thirty diallel cross F_1 combination from 6 parents were used to es-timate the general combining ability,special combining ability,recipro-cal effect,sexual effect,nonsexual effect and their variance componentsof 10 quantitative characters together with their heritabilities,andtheir possible selective effects were discussed.

    籼稻6个亲本以双列杂交配成30个 F_1组合,方差分析表明,10种数量性状的一般配合力均方和特殊配合力均方,差异都极显著。各种性状的配合力效应不同,同一性状不同亲本的一般配合力也各异。F_1的特殊配合力,有时和亲本一般配合力有一致的趋势,但不排除从一般配合力效应都不高的双亲获得具有较高特殊配合力效应值的 F_1组合的可能性。配合力为亲本选配提供依据,在水稻杂种优势利用中,尤应重视特殊配合力效应。按随机模型估算遗传力,一般配合力及狭义遗传力高的性状,能够较整齐地传递给后代;狭义遗传力较低而特殊配合力方差较大的亲本性状为穗数、粒数和单株产量等,F_1特殊配合力变异范围广,因此,在实践中,水稻杂种一代往往表现强的穗、粒优势而收到显著的经济效益。

     
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