Quantitative genetics

Efficiency of circulant diallels via mixed models in the selection of papaya genotypes resistant to foliar fungal diseases

M. Vivas, Silveira, S. F., Viana, A. P., Amaral, Jr., A. T., Cardoso, D. L., and Pereira, M. G., Efficiency of circulant diallels via mixed models in the selection of papaya genotypes resistant to foliar fungal diseases, vol. 13, pp. 4797-4804, 2014.

Diallel crossing methods provide information regarding the performance of genitors between themselves and their hybrid combinations. However, with a large number of parents, the number of hybrid combinations that can be obtained and evaluated become limited. One option regarding the number of parents involved is the adoption of circulant diallels. However, information is lacking regarding diallel analysis using mixed models.

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.

Genetic improvement of plant architecture in the common bean

V. M. P. Silva, Júnior, J. A. N. Menezes, Carneiro, P. C. S., Carneiro, J. E. S., and Cruz, C. D., Genetic improvement of plant architecture in the common bean, vol. 12, pp. 3093-3102, 2013.

Knowledge of genetic control of plant architecture in the common bean can help breeders define the most adequate breeding strategy to optimize gains. We examined genetic control of plant architecture in the common bean by means of partial diallel crosses. Fourteen bean lines were crossed under a partial diallel scheme, in which group 1 was composed of 8 erect plant lines and group 2 of 6 carioca-type grain lines.

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