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Adaptability and stability of corn hybrids grown for high grain yield Agronomy
Silva, Paulo Roberto da; Universidade Federal de Santa Maria; Bisognin, Dilson Antônio; Universidade Federal de Santa Maria; Locatelli, Ana Beatriz; Du Pont do Brasil S.A.; Storck, Lindolfo; Universidade Federal de Santa Maria.
The objective of the present study was to evaluate the adaptability and stability of corn hybrids for grain yield in environments with high crop management standards. Ten corn hybrids were evaluated for grain yield in 48 environments, consisting of 12 locations over a period of four years inSouth Brazil. A complete experimental, random block design with two repetitions was used. Adaptability and stability were analyzed according to the bi-segmented discontinuous model with measurement errors in the variables. The behavior of hybrids was studied as a function of the average yield in the inferior and/or superior environments, the estimates of the parameters of the equation, and the quality of the fit. The 30F36 hybrid behaved better in the superior...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays L.; High potential; Genotype vs. environment interaction; Cultivar selection; Bi-segmented discontinuous model.
Ano: 2014 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/17374
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Combining ability of inbred lines of maize and stability of their respective single-crosses Scientia Agricola
Aguiar,Aurélio Mendes; Carlini-Garcia,Luciana Aparecida; Silva,Adelmo Resende da; Santos,Mateus Figueiredo; Garcia,Antonio Augusto Franco; Souza Jr.,Cláudio Lopes de.
The utilization of diallel crosses for identification of superior combinations is a common practice in maize (Zea mays L.) breeding programs. This methodology allows the estimation of the combining ability of genotypes being evaluated. In this work, five inbred lines were evaluated as to their general (GCA) and specific (SCA) combining abilities, by using a complete diallel scheme. The single-crosses produced between these inbred lines were evaluated in seven environments, along with two checks, by using a randomized complete block design. Traits analized were: grain yield, plant height, ear height, ear placement, and prolificacy. A diallel analysis was carried out, following an adaptation of Griffing's method IV, in addition to hybrid stability and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Diallel crosses; Genotype vs. environment interaction; Grain yield; Adaptability.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000100013
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