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Parental selection for the formation of interspecific hybrid populations of oil palm Agronomy
Peixoto, Leonardo de Azevedo; Bhering, Leonardo Lopes; Gurgel, Fábio de Lima; Gomes Junior, Rui Alberto.
The objective of this work was to select families with superior performance and large genetic variability for diallel crosses for potential use in the pre-breeding of oil palm. The experiment consisted of 42 full-sib families divided into three trials with 16 families and 3 witnesses in common in randomized blocks, with four blocks and 12 plants per block. The characteristics evaluated in the experiment were number of bunches per plant (NBP), bunch weight per plant (BWP) and bunch average weight per plant (BAW). The estimation of variance components showed that there was greater genetic variance within families than between families. The heritability for all traits was high, above 0.75, and the coefficient of environmental variation was low to moderate for...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ciências Agrárias e genética e melhoramento de plantas Elaeis guineensis; Cluster analysis; Genetic diversity Melhoramento.
Ano: 2015 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/19145
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Parental selection in diallel crosses of Jatropha curcas using mixed models Agronomy
Laviola, Bruno Galvêas; Teodoro, Paulo Eduardo; Peixoto, Leonardo de Azevedo; Bhering, Leonardo Lopes.
Diallel crosses in an unbalanced scheme were carried out in Jatropha to (i) evaluate the additive and non-additive genetic components; (ii) select parents through the general combining ability; (iii) estimate the specific combining ability used in the crosses; and (iv) verify the existence of the maternal effect and inbreeding depression. The experiment was carried out in a complete diallel scheme with four progenitors, unbalanced for the number of crosses. The experimental design consisted of a randomized block, with 5 replications and 3 plants per plot. The following characteristics were evaluated: stem diameter (SD), number of branches (NB), plant height (PH), canopy projection on the row (CPR), canopy projection between rows (CPB), mass of hundred...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ciências Agrárias combining ability; REML; BLUP; Plant breeding. Melhoramento vegetal.
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35008
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Parental selection in diallel crosses of Jatropha curcas using mixed models Agronomy
Laviola, Bruno Galvêas; Teodoro, Paulo Eduardo; Peixoto, Leonardo de Azevedo; Bhering, Leonardo Lopes.
Diallel crosses in an unbalanced scheme were carried out in Jatropha to (i) evaluate the additive and non-additive genetic components; (ii) select parents through the general combining ability; (iii) estimate the specific combining ability used in the crosses; and (iv) verify the existence of the maternal effect and inbreeding depression. The experiment was carried out in a complete diallel scheme with four progenitors, unbalanced for the number of crosses. The experimental design consisted of a randomized block, with 5 replications and 3 plants per plot. The following characteristics were evaluated: stem diameter (SD), number of branches (NB), plant height (PH), canopy projection on the row (CPR), canopy projection between rows (CPB), mass of hundred...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Combining ability; REML; BLUP; Plant breeding.; Melhoramento vegetal.
Ano: 2018 URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/35008
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