Recurrent selection

Selection in sugarcane based on inbreeding depression

A. A. C. de Azeredo, Bhering, L. L., Brasileiro, B. P., Cruz, C. D., Barbosa, M. H. P., de Azeredo, A. A. C., Bhering, L. L., Brasileiro, B. P., Cruz, C. D., and Barbosa, M. H. P., Selection in sugarcane based on inbreeding depression, vol. 15, p. -, 2016.

This study aimed to evaluate the gene action associated with yield-related traits, including mean stalk weight (MSW), tons of sugarcane per hectare (TCH), and fiber content (FIB) in sugarcane. Moreover, the viability of individual reciprocal recurrent selection (RRSI-S1) was verified, and the effect of inbreeding depression on progenies was checked. The results were also used to select promising genotypes in S1 progenies.

Estimate of genetic gain in popcorn after cycles of phenotypic recurrent selection

H. J. Ematné, Nunes, J. A. R., Dias, K. O. G., Prado, P. E. R., Souza, J. C., Ematné, H. J., Nunes, J. A. R., Dias, K. O. G., Prado, P. E. R., and Souza, J. C., Estimate of genetic gain in popcorn after cycles of phenotypic recurrent selection, vol. 15, p. -, 2016.

Popcorn is widely consumed in Brazil, yet there are few breeding programs for this crop. Recurrent selection (RS) is a viable breeding alternative for popcorn; however, the gains achieved must be frequently checked. The aim of this study was to assess the effect of selection for grain type (round and pointed) after four cycles of phenotypic RS on the main agronomic traits of popcorn, to estimate the genetic gain achieved for the trait of expansion volume (EV), and to obtain estimates of phenotypic correlations for the main traits of the crop in the UFLA E and UFLA R populations.

Selection of cowpea progenies with enhanced drought-tolerance traits using principal component analysis

C. C. Sousa, Damasceno-Silva, K. J., Bastos, E. A., and Rocha, M. M., Selection of cowpea progenies with enhanced drought-tolerance traits using principal component analysis, vol. 14, pp. 15981-15987, 2015.

Vigna unguiculata (L.) Walp (cowpea) is a food crop with high nutritional value that is cultivated throughout tropical and subtropical regions of the world. The main constraint on high productivity of cowpea is water deficit, caused by the long periods of drought that occur in these regions. The aim of the present study was to select elite cowpea genotypes with enhanced drought tolerance, by applying principal component analysis to 219 first-cycle progenies obtained in a recurrent selection program.

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