Genetic variability and recurrent selection in corn population with potential for green corn production

• Autor(a) principal: Costa,Maraiza Lima
• Data de Publicação: 2021
• Outros Autores: Candido,Willame dos Santos, Pinto,Jefferson Fernando Naves, Silva,Caíque Machado e, Silva,Bruna Elaine de Almeida, Reis,Edésio Fialho dos
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Crop Breeding and Applied Biotechnology
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1984-70332021000400205
• topic: Predicted gain; selection index; grain yield of green ears; Zea mays L

Abstract The present study selected progenies, aiming at the production of green corn, by methods of intrapopulation recurrent selection with subsequent recombination, generating open-pollinated populations. To this end, in the 2017/2018 second season, progenies from the PMVJ01 population (originated from the recombination of progenies of the TG-02R2 x AG1051 cross) were evaluated, using PMVJ01 and the hybrid AG1051 as controls. The following parameters were evaluated: flowering, heights, green ear yield, husk cover, ear diameter and length, mass yield, ear shape, number of rows on the ear, alignment of rows, color of kernels, and husk width and length. Genetic parameters were estimated, and the gain was predicted with the selection of 20% of the progenies, using the index of Mulamba and Mock in four selection procedures and a fifth by multivariate method. Genetic variability was found in the population, which allows advances in the selection process. After recombination, two of the populations generated showed potential for use as open-pollinated cultivar.