Seleção recorrente fenotípica para florescimento precoce de feijoeiro 'Carioca'

Silva, Flávia Barbosa; Ramalho, Magno Antônio Patto; Abreu, Ângela de Fátima Barbosa

doi:10.1590/s0100-204x2007001000010

Cited by 26 publications

(24 citation statements)

References 6 publications

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“…So, only in the absence of dominance the h 2 values given in this paper are directly comparable with those found in literature, even when the question of the linkage disequilibrium mentioned above is not taken into consideration. Nevertheless, several reports on the heritability estimate of the number of days to the beginning of P. vulgaris flowering were found in the literature that confirm that the h 2 of this trait is normally high (Arriel et al, 1990;Nunes et al, 1999;Abreu et al, 2005;Silva et al, 2007). For grain yield, h 2 estimates for P. vulgaris progenies of similar magnitudes to those found by us are commonly found in the literature (Raposo et al 2000;Cunha et al, 2005;Londero et al, 2006).…”

Section: Discussionsupporting

confidence: 81%

“…It can thus be argued that the difference in the mean of the F 2:3 and F 2:4 generations must have been predominantly due to environmental effects. Several reports from the region state that when progenies were evaluated in July sowings flowering was later and the grain yield higher than in the February sowings (Oliveira et al, 2006;Silva et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

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Allele frequency and selection efficiency in cross populations of Andean x Mesoamerican common beans (Phaseolus vulgaris L. Fabales, Fabaceae)

Baldoni¹,

Ramalho²,

Abreu³

2008

Genet. Mol. Biol.

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Strategies were investigated for improving efficiency in the use of segregating common bean (Phaseolus vulgaris) populations using crosses between the Andean cultivar BRS-Radiante and the Mesoamerican parent cultivar Carioca-MG by developing populations with 12.5%, 25%, 50%, 75% and 87.5% of the allele frequency of one of the parents. For each of the five populations we evaluated for two traits, the number of days to the beginning of flowering and grain yield (g plot -1 ), in the F 2:3 (sown in February 2006) and F 2:4 (sown in July 2006) generation progenies using 15 x 15 lattice design experiments, with 44 progenies (n = 220 plants) plus the two parents and three controls being evaluated for each generation. In terms of variability release, the populations with different parental allele frequencies presented no consistent tendency of alteration. In general, genetic variance was stated among progenies in all populations, indicating success with selection. For grain yield, the lowest mean was observed in the populations with 50% of the alleles of both parents. If, for instance, the objective is to develop earlier flowering lines, the best strategy is to perform two, or at least one, backcross with the earliest parent. The most suitable allele frequency is to be determined according to the desired grain type.

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Section: Discussionsupporting

confidence: 81%

Section: Discussionmentioning

confidence: 99%

Allele frequency and selection efficiency in cross populations of Andean x Mesoamerican common beans (Phaseolus vulgaris L. Fabales, Fabaceae)

Baldoni¹,

Ramalho²,

Abreu³

2008

Genet. Mol. Biol.

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“…Various methods of genetic breeding for plants exist, including intrapopulation recurrent selection that allows the accumulation of favorable alleles at each selection cycle, thus obtaining real profits for the improved characters (Silva, Ramalho, & Abreu, 2007).…”

Section: Introductionmentioning

confidence: 99%

<b>Anticipated selection for intrapopulation breeding of passion fruit

et al. 2017

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ABSTRACT. The aim of this work was to verify the efficiency of the anticipated selection of superior plants in intrapopulation breeding of passion fruit. The experiment was conducted at the Mato Grosso State University experimental area. Eight populations were evaluated. Planting was carried out in August 2010 following the randomized blocks experimental design, with ten repeats and ten plants per plot. The production characteristics of mass and number of fruits were evaluated from data obtained from two cultivation periods, the first year and the full two-year cycle of culture. Estimates of genetic parameters indicate the possibility of selection gains. The accuracies of fruit production, fruit number and fruit mass characteristics had high magnitude, independent of the selection cycle. Coincidence index estimates were high for all characteristics. Based on the results, early selection (first year) was efficient and reduced the time of selection for the best plants and can be used for passion fruit breeding.Keywords: selection gain, Passiflora edulis Sims, productivity.Seleção antecipada no melhoramento intrapopulacional do maracujazeiro azedo RESUMO. Este trabalho tem como objetivo verificar a eficiência da seleção antecipada de plantas superiores no melhoramento intrapopulacional do maracujazeiro azedo. O experimento foi conduzido na área experimental da Universidade do Estado de Mato Grosso. Foram avaliadas oito populações e o plantio foi realizado em agosto de 2010, com delineamento experimental em blocos ao acaso, dez repetições e dez plantas por parcela. As características de produção, massa e número de frutos foram avaliadas a partir de dados obtidos em dois períodos de cultivo, sendo no primeiro ano e no ciclo completo da cultura, que nesse caso foi de dois anos. As estimativas dos parâmetros genéticos indicam a possibilidade de ganhos com a seleção. Os valores de acurácia para as características de produção de frutos, número de frutos e massa de frutos foram de alta magnitude, independente do ciclo de seleção. As estimativas do índice de coincidência foram altas para todas as características. Baseado nos resultados, a seleção antecipada (primeiro ano) se mostrou eficiente por reduzir o tempo de seleção das melhores plantas, podendo ser utilizada no melhoramento do maracujazeiro azedo.Palavras-chave: ganho de seleção, Passiflora edulis Sims, produtividade.

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“…O número de dias da emergência ao florescimento é a característica que tem sido utilizada pelos melhoristas para avaliar a precocidade em feijoeiro (Ribeiro et al, 2004;Silva et al, 2007). Este caráter apresenta alta herdabilidade, além de correlação positiva e de elevada magnitude com a maturação fisiológica dos grãos (Santos & Vencovsky, 1985).…”

Section: Introductionunclassified

Escolha de genitores quanto à precocidade e produtividade de feijão tipo carioca

Vale

Barili

Oliveira

et al. 2015

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar linhagens de feijoeiro promissoras para a seleção de genitores com características de feijão tipo carioca, precoces e de alto potencial produtivo. Avaliaram-se 35 linhagens de feijoeiro, em delineamento de blocos ao acaso com três repetições. Quatro destas linhagens -Goiano Precoce, XAN112, Carioca1070 e Rosinha Precoce -foram selecionadas para compor o grupo 1 do dialelo parcial 4×5, e três -RP1, VC15 e VC33, de ciclo normal, grãos tipo carioca e elevado potencial produtivo -foram utilizadas para compor o grupo 2 do dialelo, juntamente com as cultivares BRSMG Madrepérola e BRS Estilo. Obtiveram-se 20 híbridos que, com seus genitores, foram avaliados na safra da seca de 2013, em Coimbra e Viçosa, MG, em delineamento de blocos ao acaso, com três repetições. A linhagem Goiano Precoce destacouse quanto à precocidade, com valores de capacidade geral de combinação (CGC) negativos e significativos em Viçosa (-3,15) e Coimbra (-3,44). A linhagem RP1 destacou-se quanto ao rendimento de grãos, com valores positivos e significativos de CGC em Viçosa (115) e Coimbra (260). Com base na CGC, a linhagem Goiano Precoce é promissora para utilização como genitora quanto à precocidade, e a RP1, quanto ao aumento no rendimento de grãos.Termos para indexação: Phaseolus vulgaris, análise dialélica, dialelo parcial. Choice of parents for earliness and yield of carioca-type beanAbstract -The objective of this work was to evaluate promising bean lines for the selection of parents, with carioca grain-type traits, early, and with high productive potential. Thirty-five common bean lines were evaluated in a randomized complete block design with three replicates. Four of these lines -Goiano Precoce, XAN112, Carioca1070, and Rosinha Precoce -were used to compose the group 1 of a 4×5 partial diallel, and three -RP1, VC15 e VC33, of normal cycle and carioca grain type with high yield potential -were used to compose the group 2 of the diallel, together with the cultivars BRSMG Mandrepérola and BRS Estilo. Twenty hybrids were obtained, which were evaluated with their parents in the dry season of 2013, in Coimbra and Viçosa, in the state of Minas Gerais, Brazil, in a randomized complete block design with three replicates. Goiano Precoce line stood out for earliness with negative and significant values of general combining ability (GCA), in Viçosa (-3.15) and Coimbra (-3.44). RP1 line stood out for grain yield with positive and significant GCA values, in Viçosa (115) and Coimbra (260). Based on the GCA, Goiano Precoce is a promising line to be used as a parent for earliness, and RP1 for grain yield increase.

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Seleção recorrente fenotípica para florescimento precoce de feijoeiro 'Carioca'

Cited by 26 publications

References 6 publications

Allele frequency and selection efficiency in cross populations of Andean x Mesoamerican common beans (Phaseolus vulgaris L. Fabales, Fabaceae)

Allele frequency and selection efficiency in cross populations of Andean x Mesoamerican common beans (Phaseolus vulgaris L. Fabales, Fabaceae)

<b>Anticipated selection for intrapopulation breeding of passion fruit

Escolha de genitores quanto à precocidade e produtividade de feijão tipo carioca

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