The Experts below are selected from a list of 252 Experts worldwide ranked by ideXlab platform
Antoine Kremer - One of the best experts on this subject based on the ideXlab platform.
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Structure of the Specific Combining Ability between two species of Eucalyptus. I. RAPD data
Theoretical and Applied Genetics, 1997Co-Authors: C.p. Baril, Daniel Verhaegen, Philippe Vigneron, Jean-marc Bouvet, Antoine KremerAbstract:Within the context of the reciprocal recurrent selection scheme developed in 1989 by CIRAD-Foret on Eucalyptus, RAPD essays were performed to assess the genetic diversity in the two species E. urophylla and E. grandis. The molecular markers were split into two parts: the Specific markers (present with different frequencies in the two species) and the common markers (present with similar frequencies in the two species). The study analyses the structure of genetic diversity within and between the two species of Eucalyptus. Different genetic distances are worked out for use in prediction equations of the individual tree trunk volume of hybrids at 38 months. Each distance is expressed as the sum of the general genetic distance and the Specific genetic distance. The general genetic distance based on the double presence plus the double absence of bands seems to be an interesting co-variate to use in a factor regression model. Through this model the distance calculated between species explains the general Combining Ability (GCA) and the Specific Combining Ability (SCA) of the phenotypic character with a global coefficient of determination of 81.6%.
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Structure of the Specific Combining Ability between two species of Eucalyptus.II. A clustering approach and a multiplicative model
Theoretical and Applied Genetics, 1997Co-Authors: C.p. Baril, Daniel Verhaegen, Philippe Vigneron, Jean-marc Bouvet, Antoine KremerAbstract:The Eucalyptus breeding program of URPPI (a partnership between CIRAD-Foret, Centre National de la Recherche Forestiere du Congo, and Unite d’Aforestation Industrielle du Congo) consists of a reciprocal recurrent selection scheme developed in the Congo between the two species Eucalyptus urophylla and Eucalyptus grandis. Two approaches are proposed in order to model and predict the Specific Combining Ability (SCA) between these species. The clustering approach uses a simultaneous clustering procedure of the two species based on SCA and reveals heterotic groups coherent with the geographical origins of E. urophylla genotypes. The second approach uses a multiplicative model to partition the SCA into three multiplicative terms explaining 95% of the interaction.
Panjisakti Basunanda - One of the best experts on this subject based on the ideXlab platform.
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Heterosis and Specific Combining Ability in Sweet Corn and Its Correlation with Genetic Similarity of Inbred Lines
The Journal of Agricultural Science, 2017Co-Authors: Purwito Djoko Yuwono, Rudi Hari Murti, Panjisakti BasunandaAbstract:The heterosis phenomena has been exploited in hybrid maize field production. Theoretically, heterosis was depending on genetic distance of inbred lines. Meanwhile, different from field corn breeding, sweet corn does not have well defined heterotic group. The objective of this study was to determine genetic similarity (GS) of eight selected inbred lines of sweet corn based on morphological traits and its correlation with Specific Combining Ability (SCA) and heterosis. The eight inbred lines were characterized and crossed in full diallel design. Then, the lines, F1 and its reciprocal, were evaluated by using the Randomized Complete Block Design in three replications. The result showed positive heterosis and SCA effect in most of the hybrids which indicated the heterosis effect in the hybrids performance. Based on the morphological traits, the genetic similarity between the inbred lines was 62.2-82.4%. The inbred lines with 70% similarity coefficient were grouped into three. There was significant correlation between the genetic similarity and heterosis in all traits, except in the plant height. Meanwhile, only SCA of days to maturity and TSS showed significant correlation to genetic similarity. This indicated the usefullness of genetic similarity to identify the potential inbred lines for parental hybrid.
C.p. Baril - One of the best experts on this subject based on the ideXlab platform.
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Structure of the Specific Combining Ability between two species of Eucalyptus. I. RAPD data
Theoretical and Applied Genetics, 1997Co-Authors: C.p. Baril, Daniel Verhaegen, Philippe Vigneron, Jean-marc Bouvet, Antoine KremerAbstract:Within the context of the reciprocal recurrent selection scheme developed in 1989 by CIRAD-Foret on Eucalyptus, RAPD essays were performed to assess the genetic diversity in the two species E. urophylla and E. grandis. The molecular markers were split into two parts: the Specific markers (present with different frequencies in the two species) and the common markers (present with similar frequencies in the two species). The study analyses the structure of genetic diversity within and between the two species of Eucalyptus. Different genetic distances are worked out for use in prediction equations of the individual tree trunk volume of hybrids at 38 months. Each distance is expressed as the sum of the general genetic distance and the Specific genetic distance. The general genetic distance based on the double presence plus the double absence of bands seems to be an interesting co-variate to use in a factor regression model. Through this model the distance calculated between species explains the general Combining Ability (GCA) and the Specific Combining Ability (SCA) of the phenotypic character with a global coefficient of determination of 81.6%.
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Structure of the Specific Combining Ability between two species of Eucalyptus.II. A clustering approach and a multiplicative model
Theoretical and Applied Genetics, 1997Co-Authors: C.p. Baril, Daniel Verhaegen, Philippe Vigneron, Jean-marc Bouvet, Antoine KremerAbstract:The Eucalyptus breeding program of URPPI (a partnership between CIRAD-Foret, Centre National de la Recherche Forestiere du Congo, and Unite d’Aforestation Industrielle du Congo) consists of a reciprocal recurrent selection scheme developed in the Congo between the two species Eucalyptus urophylla and Eucalyptus grandis. Two approaches are proposed in order to model and predict the Specific Combining Ability (SCA) between these species. The clustering approach uses a simultaneous clustering procedure of the two species based on SCA and reveals heterotic groups coherent with the geographical origins of E. urophylla genotypes. The second approach uses a multiplicative model to partition the SCA into three multiplicative terms explaining 95% of the interaction.
Purwito Djoko Yuwono - One of the best experts on this subject based on the ideXlab platform.
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Heterosis and Specific Combining Ability in Sweet Corn and Its Correlation with Genetic Similarity of Inbred Lines
The Journal of Agricultural Science, 2017Co-Authors: Purwito Djoko Yuwono, Rudi Hari Murti, Panjisakti BasunandaAbstract:The heterosis phenomena has been exploited in hybrid maize field production. Theoretically, heterosis was depending on genetic distance of inbred lines. Meanwhile, different from field corn breeding, sweet corn does not have well defined heterotic group. The objective of this study was to determine genetic similarity (GS) of eight selected inbred lines of sweet corn based on morphological traits and its correlation with Specific Combining Ability (SCA) and heterosis. The eight inbred lines were characterized and crossed in full diallel design. Then, the lines, F1 and its reciprocal, were evaluated by using the Randomized Complete Block Design in three replications. The result showed positive heterosis and SCA effect in most of the hybrids which indicated the heterosis effect in the hybrids performance. Based on the morphological traits, the genetic similarity between the inbred lines was 62.2-82.4%. The inbred lines with 70% similarity coefficient were grouped into three. There was significant correlation between the genetic similarity and heterosis in all traits, except in the plant height. Meanwhile, only SCA of days to maturity and TSS showed significant correlation to genetic similarity. This indicated the usefullness of genetic similarity to identify the potential inbred lines for parental hybrid.
Shabana Memon - One of the best experts on this subject based on the ideXlab platform.
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Determination of General and Specific Combining Ability of Five Upland Cotton Cultivars
Journal of Agricultural Science, 2016Co-Authors: Habib R. Lakho, Ayaz A. Soomro, Muhammad Abdul Rehman Rashid, Shabana MemonAbstract:The present investigation was aimed to determine the general Combining Ability of the parental lines and Specific Combining Ability of the hybrids respectively and also heterotic effect of F 1 hybrids for some agro-economical traits in upland cotton. Five parent genotypes viz. NIAB-78, Chandi-95, Haridost, CRIS-134 and Shahbaz were used to generate ten F 1 hybrids through diallel mating design. The seeds of F 1 hybrids along with their parents were sown in Randomized Complete Block Design (RCBD) in three replications during 2009-10. All the traits showed highly significant variation and GCA and SCA variances were also significant for all the parameters studied. Among the parents, NIAB-78, Haridost and CRIS-134 were best general combiners for plant height, sympodial branches per plant, bolls per plant, boll weight, seed cotton yield per plant, GOT% and seed index. Cross NIAB-78×Chandi-95 was best Specific combiner for plant height and bolls per plant and CRIS-134×Haridost for sympodial branches per plant. However, the hybrid Chandi-95×CRIS-134 proved best Specific combiner for seed cotton yield per plant and GOT%, while NIAB-78×CRIS-134 gave maximum SCA effects for seed index.
