Estimates for Genetic Variance Components in Reciprocal Recurrent Selection in Populations Derived from Maize Single-Cross Hybrids
This study was carried out to obtain the estimates of genetic variance and covariance components related to intra- and interpopulation in the original populations (C0) and in the third cycle (C3) of reciprocal recurrent selection (RRS) which allows breeders to define the best breeding strategy. For...
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| Format: | Article |
| Language: | English |
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Wiley
2014-01-01
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| Series: | The Scientific World Journal |
| Online Access: | http://dx.doi.org/10.1155/2014/540152 |
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| author | Matheus Costa dos Reis José Maria Villela Pádua Guilherme Barbosa Abreu Fernando Lisboa Guedes Rodrigo Vieira Balbi João Cândido de Souza |
| author_facet | Matheus Costa dos Reis José Maria Villela Pádua Guilherme Barbosa Abreu Fernando Lisboa Guedes Rodrigo Vieira Balbi João Cândido de Souza |
| author_sort | Matheus Costa dos Reis |
| collection | DOAJ |
| description | This study was carried out to obtain the estimates of genetic variance and covariance components related to intra- and interpopulation in the original populations (C0) and in the third cycle (C3) of reciprocal recurrent selection (RRS) which allows breeders to define the best breeding strategy. For that purpose, the half-sib progenies of intrapopulation (P11 and P22) and interpopulation (P12 and P21) from populations 1 and 2 derived from single-cross hybrids in the 0 and 3 cycles of the reciprocal recurrent selection program were used. The intra- and interpopulation progenies were evaluated in a 10×10 triple lattice design in two separate locations. The data for unhusked ear weight (ear weight without husk) and plant height were collected. All genetic variance and covariance components were estimated from the expected mean squares. The breakdown of additive variance into intrapopulation and interpopulation additive deviations (στ2) and the covariance between these and their intrapopulation additive effects (CovAτ) found predominance of the dominance effect for unhusked ear weight. Plant height for these components shows that the intrapopulation additive effect explains most of the variation. Estimates for intrapopulation and interpopulation additive genetic variances confirm that populations derived from single-cross hybrids have potential for recurrent selection programs. |
| format | Article |
| id | doaj-art-043bbbae6ded4e4e96b41c349ecf0dfb |
| institution | Kabale University |
| issn | 2356-6140 1537-744X |
| language | English |
| publishDate | 2014-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | The Scientific World Journal |
| spelling | doaj-art-043bbbae6ded4e4e96b41c349ecf0dfb2025-02-03T05:45:27ZengWileyThe Scientific World Journal2356-61401537-744X2014-01-01201410.1155/2014/540152540152Estimates for Genetic Variance Components in Reciprocal Recurrent Selection in Populations Derived from Maize Single-Cross HybridsMatheus Costa dos Reis0José Maria Villela Pádua1Guilherme Barbosa Abreu2Fernando Lisboa Guedes3Rodrigo Vieira Balbi4João Cândido de Souza5DuPont do Brasil S.A., Divisão Pioneer Sementes, 73310-970 Brasília, DF, BrazilDepartamento de Biologia (DBI), Universidade Federal de Lavras (UFLA), Lavras, MG, BrazilEmbrapa Cocais, São Luis, MA, BrazilEmbrapa Semi-Árido, Sobradinho, CE, BrazilDepartamento de Agricultura (DAG), Universidade Federal de Lavras (UFLA), Lavras, MG, BrazilDepartamento de Biologia (DBI), Universidade Federal de Lavras (UFLA), Lavras, MG, BrazilThis study was carried out to obtain the estimates of genetic variance and covariance components related to intra- and interpopulation in the original populations (C0) and in the third cycle (C3) of reciprocal recurrent selection (RRS) which allows breeders to define the best breeding strategy. For that purpose, the half-sib progenies of intrapopulation (P11 and P22) and interpopulation (P12 and P21) from populations 1 and 2 derived from single-cross hybrids in the 0 and 3 cycles of the reciprocal recurrent selection program were used. The intra- and interpopulation progenies were evaluated in a 10×10 triple lattice design in two separate locations. The data for unhusked ear weight (ear weight without husk) and plant height were collected. All genetic variance and covariance components were estimated from the expected mean squares. The breakdown of additive variance into intrapopulation and interpopulation additive deviations (στ2) and the covariance between these and their intrapopulation additive effects (CovAτ) found predominance of the dominance effect for unhusked ear weight. Plant height for these components shows that the intrapopulation additive effect explains most of the variation. Estimates for intrapopulation and interpopulation additive genetic variances confirm that populations derived from single-cross hybrids have potential for recurrent selection programs.http://dx.doi.org/10.1155/2014/540152 |
| spellingShingle | Matheus Costa dos Reis José Maria Villela Pádua Guilherme Barbosa Abreu Fernando Lisboa Guedes Rodrigo Vieira Balbi João Cândido de Souza Estimates for Genetic Variance Components in Reciprocal Recurrent Selection in Populations Derived from Maize Single-Cross Hybrids The Scientific World Journal |
| title | Estimates for Genetic Variance Components in Reciprocal Recurrent Selection in Populations Derived from Maize Single-Cross Hybrids |
| title_full | Estimates for Genetic Variance Components in Reciprocal Recurrent Selection in Populations Derived from Maize Single-Cross Hybrids |
| title_fullStr | Estimates for Genetic Variance Components in Reciprocal Recurrent Selection in Populations Derived from Maize Single-Cross Hybrids |
| title_full_unstemmed | Estimates for Genetic Variance Components in Reciprocal Recurrent Selection in Populations Derived from Maize Single-Cross Hybrids |
| title_short | Estimates for Genetic Variance Components in Reciprocal Recurrent Selection in Populations Derived from Maize Single-Cross Hybrids |
| title_sort | estimates for genetic variance components in reciprocal recurrent selection in populations derived from maize single cross hybrids |
| url | http://dx.doi.org/10.1155/2014/540152 |
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