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Predição de ganhos genéticos na população de milho pipoca UNB-2U sob seleção recorrente utilizando-se diferentes índices de seleção

2009; UNIVERSIDADE ESTADUAL DE LONDRINA; Volume: 30; Issue: 4 Linguagem: Inglês

10.5433/1679-0359.2009v30n4p803

ISSN

1679-0359

Autores

Silvério de Paiva Freitas Júnior, Antônio Teixeira do Amaral Júnior, Ramon Macedo Rangel, Alexandre Pio Viana,

Tópico(s)

Banana Cultivation and Research

Resumo

Aiming to estimate the gain prediction by using selection indexes on cycle C4 of UNB-2U, two hundred progenies of full-sib families were obtained on the third cycle under recurrent selection. The progenies were evaluated in a randomized complete block design with two replications within sets, in two distinct environments: Colégio Estadual Agrícola Antônio Sarlo, located in Campos dos Goytacazes, and Experimental Station of PESAGRO-Rio, located in Itaocara, Rio de Janeiro State. The utilized selection indexes were the Smith (1936) and Hazel (1943), Pesek and Baker (1969), Williams (1962), and Mulamba and Mock (1978). The selection index of Mulamba and Mock (1978) allowed the prediction of negative gains for number of disease ears, number of ears attacked by insects, number of broken plants, poorly hulled ears; and it provided superior gains for popcorn expansion and grain yield, with values of 10.55% and 8.50%, respectively, in the use of arbitrary weights attributed by tentative.

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