Genetic gain

Implications of the progeny x environment interaction in selection index involving characteristics of the common bean

L. K. Lima, Ramalho, M. A. P., and Abreu, A. F. B., Implications of the progeny x environment interaction in selection index involving characteristics of the common bean, vol. 11, pp. 4093-4099, 2012.

Breeders normally select simultaneously for several traits in various environments. We investigated the effects of the progeny x environment interaction on success in selection for several traits. The population used was obtained from a cross between the CVIII-85-11 line, which has a semi-erect to prostrate plant architecture and a cream with brown streaks bean type, and the BRS-Supremo cultivar, which has an erect plant architecture and black grains.

Estimates of genetic trend for carcass traits in a commercial broiler line

J. L. B. M. Grosso, Balieiro, J. C. C., Eler, J. P., Ferraz, J. B. S., Mattos, E. C., T. Filho, M., Felício, A. M., and Rezende, F. M., Estimates of genetic trend for carcass traits in a commercial broiler line, vol. 8, pp. 97-104, 2009.

Data from the slaughter of 24,001 chickens that were part of a selection program for the production of commercial broilers were used to estimate genetic trend for absolute carcass (CW), breast meat (BRW), and leg (LW) weights, and relative carcass (CY), breast meat (BRY), and leg (LY) weights. The components of (co)variance and breeding values of individuals were obtained by the restricted maximum likelihood method applied to animal models. The relationship matrix was composed of 132,442 birds.

Heritability and expected selection response for yield traits in blanched asparagus

I. Gatti, Anido, F. López, Cravero, V., Asprelli, P., and Cointry, E., Heritability and expected selection response for yield traits in blanched asparagus, vol. 4, pp. 67-73, 2005.

Despite the continuous breeding that has been conducted with asparagus (Asparagus officinalis L.) since the beginning of the last century, there is little information on parameters for predicting direct and indirect selection response. Yield traits for blanched asparagus production were studied along a two-year period in a half-sib family population planted in Zavalla, Argentina.

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