Estimates for Genetic Variance Components in Reciprocal Recurrent Selection in Populations Derived from Maize Single-Cross HybridsReport as inadecuate




Estimates for Genetic Variance Components in Reciprocal Recurrent Selection in Populations Derived from Maize Single-Cross Hybrids - Download this document for free, or read online. Document in PDF available to download.

The Scientific World Journal - Volume 2014 2014, Article ID 540152, 7 pages -

Research Article

DuPont do Brasil S.A., Divisão Pioneer Sementes, 73310-970 Brasília, DF, Brazil

Departamento de Biologia DBI, Universidade Federal de Lavras UFLA, Lavras, MG, Brazil

Embrapa Cocais, São Luis, MA, Brazil

Embrapa Semi-Árido, Sobradinho, CE, Brazil

Departamento de Agricultura DAG, Universidade Federal de Lavras UFLA, Lavras, MG, Brazil

Received 8 February 2014; Accepted 21 May 2014; Published 9 June 2014

Academic Editor: Daoxin Xie

Copyright © 2014 Matheus Costa dos Reis et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

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 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 and the covariance between these and their intrapopulation additive effects 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.





Author: Matheus Costa dos Reis, José Maria Villela Pádua, Guilherme Barbosa Abreu, Fernando Lisboa Guedes, Rodrigo Vieira Balbi, an

Source: https://www.hindawi.com/



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