Bayesian analysis of quantitative traits in popcorn (<i>Zea mays</i>L.) through four cycles of recurrent selection

Amaral, Antônio Teixeira do; Freitas, Ismael Lourenço de Jesus; Guimarães, Amanda Gonçalves; Maldonado, Carlos; Arriagada, Osvin; Mora, Freddy

doi:10.1080/1343943x.2016.1222870

Cited by 7 publications

(2 citation statements)

References 27 publications

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“…Amaral Júnior et al (2016) found values close to predicted genetic gains using data from the present work through Bayesian analysis, with gains of 4.3% for GY and 2.9% for PE. Therefore, the arbitrary weights were the more suitable method for the selection of the thirty progenies that were reliably superior for recombination of the characters evaluated, favoring consistent gains for the next recurrent selection cycle.…”

Section: Genetic Gains and Potential Progenies In The Eighth Selectivmentioning

confidence: 81%

Genetic Gains and Selection Advances of the Uenf-14 Popcorn Population

et al. 2018

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-Recurrent selection can generate successive gains for characters of economic interest without causing genetic narrowing in the population. However, it has rarely been used in breeding programs in popcorn, especially when using full-sibling progenies to generate more expressive gains. The objective of this study was to estimate the genetic gain of the UENF-14 popcorn population through recurrent selection, and verify the evolution of the gains between the selection cycles four and eight. A total of 200 full-sibling progenies were evaluated in randomized blocks arranged in eight sets within three replicates in two environments; each set containing twenty-five progenies and six controls (selection cycles 4, 5, 6 and 7 of the UENF-14, BRS-Angela and IAC-125). The average height, prolificacy, 100-grain weight, ear weight, grain yield, and grain popping expansion of the plants were evaluated. In the selection of the thirty superior progenies for the eighth cycle, the Mulamba and Mock selection index was used, which generated estimated genetic gains of 4.60 for grain yield and 3.61% for popping expansion. The grain yield increased 111.99 kg ha -1 and the popping expansion increased 1.75 mL g -1 per cycle. The evolution of the cycles resulted in an accumulated genetic gain for the main characters of economic importance, allowing the prediction of success in the continuity of the recurrent selection.Keywords: Selection index. Recurrent selection. Zea mays L.. GANHOS GENÉTICOS E AVANÇOS SELETIVOS NA POPULAÇÃO UENF-14 DE MILHO-PIPOCARESUMO -A seleção recorrente embora permita sucessivos ganhos para caracteres de interesse econômico, sem provocar estreitamento genético na população, tem sido raramente utilizada em programas de melhoramento com milho-pipoca, sobretudo em se tratando da estratégia de utilização de progênies de irmãos-completos, em que são possíveis ganhos mais expressivos. O objetivo deste estudo foi estimar o ganho genético na população UENF-14, de milho-pipoca, por meio de seleção recorrente e averiguar a evolução dos ganhos entre os ciclos quatro e oito de seleção. Foram avaliadas 200 progênies de irmãos-completos, em blocos casualizados, com arranjos em sets dentro de três repetições em dois ambientes, no total de oito sets, sendo que cada set continha vinte e cinco progênies e seis testemunhas (ciclos 4, 5, 6 e 7 de seleção em UENF-14, BRS Angela e IAC 125). Avaliou-se a altura média da planta, prolificidade, peso de cem grãos, peso de espiga, produtividade de grãos e capacidade de expansão. Na seleção das trinta progênies superiores para o oitavo ciclo, foi utilizado o índice de seleção Mulamba e Mock, que proporcionou ganhos genéticos estimados de 4,60 e 3,61%, respectivamente, para produtividade de grãos e capacidade de expansão. Houve incremento de 111,99 kg ha -1 e de 1,75 mL g -1 , por ciclo, para a produtividade de grãos e capacidade de expansão, nesta ordem. A evolução dos ciclos revelou ganho genético acumulado para os principais caracteres de importância econômica da cultura, possibil...

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Section: Genetic Gains and Potential Progenies In The Eighth Selectivmentioning

confidence: 81%

Genetic Gains and Selection Advances of the Uenf-14 Popcorn Population

et al. 2018

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“…Several kinds of grains have been used to obtain popped snacks, from which corn is one of the most widely used. Most of the studies carried out on popped corn have focused on the processing conditions, methods, and varieties that ensure a quality popped grain (Amaral Junior et al, 2016;Cabrera-Ramírez et al, 2020;Mishra et al, 2014;Paraginski et al, 2016;Pohndorf et al, 2019). Meanwhile, other research works have focused on studying genetic characteristics and growing conditions that allow obtaining desirable volumetric and yield attributes in popcorn (Almeida et al, 2018;do Amaral Júnior et al, 2016;Dong et al, 2015;Kamphorst et al, 2020).…”

Section: Introductionmentioning

confidence: 99%