Genetic divergence among maize hybrids and correlations with heterosis and combining ability
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| Format: | Artículo científico |
| Language: | en |
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Universidade Estadual de Maringá
2012
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| _version_ | 1876450911328403456 |
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| author | Rodrigo Oliboni |
| author_facet | Rodrigo Oliboni |
| contents | Genetic divergence among maize hybrids and correlations with heterosis and combining ability Rodrigo Oliboni Marcos Ventura Faria Mikael Neumann Guilherme Mendes Battistelli Rafael Gallo Tegoni Juliano Tadeu Vilela de Resende Agrociencias Zea mays plant breeding Mahalanobis distance specific combining ability Twelve corn hybrids recommended for cropping in the south-central region of the Paraná State and 66 crossings obtained among these hybrids were evaluated for agronomic and morphological traits. These genotypes were evaluated in three experiments performed in Laranjeiras do Sul, Guarapuava and Cantagalo, Paraná State, Brazil. Heterosis and specific combining ability (SCA) were estimated for yield of husked ears. Data from measuring 22 morphological/agronomical traits of the parents were subjected to a multivariate joint analysis of variance and cluster analysis to group the parental hybrids via the neighbor method, using the generalized Mahalanobis distance. Pearson correlation coefficients between heterosis, SCA, D2 and yield of husked ears were obtained. The cross P30F44 x Sprint displayed a high mean and a high heterosis for yield of husked ears, but a moderate estimate of genetic divergence. Estimates of genetic divergence were not effective at predicting the most heterotic crossings, as Pearson correlation coefficients between D2 and heterosis and D2 and CEC were not significant. Positive significant correlations were observed between yield means and CEC and heterosis. 2012 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303026475015 10.4025/actasciagron.v34i1.11979 en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.1 Vol.34 |
| format | Artículo científico |
| id | redalyc_303026475015 |
| institution | Redalyc |
| language | en |
| publishDate | 2012 |
| publisher | Universidade Estadual de Maringá |
| spellingShingle | Genetic divergence among maize hybrids and correlations with heterosis and combining ability Rodrigo Oliboni Agrociencias Zea mays plant breeding Mahalanobis distance specific combining ability Genetic divergence among maize hybrids and correlations with heterosis and combining ability Rodrigo Oliboni Marcos Ventura Faria Mikael Neumann Guilherme Mendes Battistelli Rafael Gallo Tegoni Juliano Tadeu Vilela de Resende Agrociencias Zea mays plant breeding Mahalanobis distance specific combining ability Twelve corn hybrids recommended for cropping in the south-central region of the Paraná State and 66 crossings obtained among these hybrids were evaluated for agronomic and morphological traits. These genotypes were evaluated in three experiments performed in Laranjeiras do Sul, Guarapuava and Cantagalo, Paraná State, Brazil. Heterosis and specific combining ability (SCA) were estimated for yield of husked ears. Data from measuring 22 morphological/agronomical traits of the parents were subjected to a multivariate joint analysis of variance and cluster analysis to group the parental hybrids via the neighbor method, using the generalized Mahalanobis distance. Pearson correlation coefficients between heterosis, SCA, D2 and yield of husked ears were obtained. The cross P30F44 x Sprint displayed a high mean and a high heterosis for yield of husked ears, but a moderate estimate of genetic divergence. Estimates of genetic divergence were not effective at predicting the most heterotic crossings, as Pearson correlation coefficients between D2 and heterosis and D2 and CEC were not significant. Positive significant correlations were observed between yield means and CEC and heterosis. 2012 artículo científico 1679-9275 https://www.redalyc.org/articulo.oa?id=303026475015 10.4025/actasciagron.v34i1.11979 en http://www.redalyc.org/revista.oa?id=3030 Acta Scientiarum. Agronomy application/pdf Universidade Estadual de Maringá Acta Scientiarum. Agronomy (Brasil) Num.1 Vol.34 |
| title | Genetic divergence among maize hybrids and correlations with heterosis and combining ability |
| topic | Agrociencias Zea mays plant breeding Mahalanobis distance specific combining ability |
| url | https://www.redalyc.org/articulo.oa?id=303026475015 |