Selection aiming at upright growth habit common bean with carioca type grains

Cunha, W. G.; Ramalho, Magno Antônio Patto; Abreu, A. F. B.

doi:10.12702/1984-7033.v05n04a02

Cited by 30 publications

(36 citation statements)

References 10 publications

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“…Nevertheless, the flower buds used in carrying out crosses were those that flowered first and which were visually more developed, and this may have contributed to increasing the size of the beans and consequently the yield. These results corroborate those obtained by Cunha et al (2005), who linked positive gains with the selection from the evaluation of plant bean progenies to productivity, type of grains and plant architecture, simultaneously, indicating at first that the correlation between plant architecture and productivity can generate genetic gain with the selection.…”

Section: Discussionsupporting

confidence: 89%

Recurrent mass selection for upright plant architecture in common bean

Pires

Ramalho

Abreu

et al. 2014

Sci. agric. (Piracicaba, Braz.)

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Plant with a more upright architecture offers many advantages to farmers. Recurrent mass selection (RS) programs for carioca type common bean have been implemented for the purpose of obtaining new lines that will generate the high yields that are associated with upright plant architecture. This study aimed to assess the efficiency of recurrent mass selection (RS) for upright plant architecture in common bean (Phaseolus vulgaris) and the effect of RS on grain yield and to verify whether or not there is still variability in the population that favors continuing selection programs, using information obtained from progenies evaluated in cycle five (CV) and cycle eight (CVIII) of the RS program. Mass selection for more upright plants was performed visually in the "S 0 " generation before flowering. Progenies S 0:3 and S 0:4 were evaluated in 2009 (CV) and 2011 (CVIII). Heritability (h²) and RS progress were estimated using adjusted means.After eight selection cycles, the population subjected to RS still had enough genetic variability to achieve continued success through recurrent selection. The RS progress was 1.62 % per cycle for the growth habit scores and 6.81 % for grain yield.

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Section: Discussionsupporting

confidence: 89%

Recurrent mass selection for upright plant architecture in common bean

Pires

Ramalho

Abreu

et al. 2014

Sci. agric. (Piracicaba, Braz.)

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“…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). However, no tendency was observed in the heritability values caused by the alteration in the allele frequencies of the populations (Table 2).…”

Section: Discussionsupporting

confidence: 81%

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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“…Há de se ressaltar que nesse caso cada ciclo seletivo durou cerca de dois anos, o que possibilitaria conduzir seis ciclos seletivos para o florescimento. O progresso estimado neste trabalho, em tempo equivalente, seria de -4,4%, ou seja, magnitude comparável à de outros caracteres (Ranalli, 1996;Singh et al, 1999;Cunha, 2005).…”

Section: Resultsunclassified

Seleção recorrente fenotípica para florescimento precoce de feijoeiro 'Carioca'

Silva

Ramalho

Abreu

2007

Pesq. agropec. bras.

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Resumo -O objetivo deste trabalho foi avaliar a eficiência da seleção recorrente fenotípica em relação ao número de dias para o início do florescimento em feijoeiro e verificar se a seleção afeta outros caracteres. Utilizou-se uma população proveniente da mistura das populações F 2 (S 0 ) de 11 combinações híbridas, avaliadas para a precocidade. As plantas S 0 (ciclo 0), que floresceram mais precocemente, foram intercruzadas para a obtenção do ciclo I. As sementes obtidas foram utilizadas para a continuidade da seleção, e o processo foi repetido até o quinto ciclo seletivo. O progresso genético foi avaliado com cinqüenta e três progênies, provenientes da mistura das sementes das plantas S 0 após uma autofecundação (S 1:2 ) de cada ciclo. Os caracteres avaliados foram: número de dias para o florescimento, severidade da mancha-angular (Phaeoisariopsis griseola), número de dias para a maturação, produtividade e tipo de grãos. Constatou-se que o progresso com a seleção foi de 2,2% ao ano, o que indica que a seleção recorrente fenotípica foi efetiva em reduzir o número de dias para o florescimento. Não houve resposta correlacionada à seleção quanto ao número de dias para o florescimento nos demais caracteres avaliados, do que se depreende ser possível a seleção de progênies que associem florescimento precoce à expressão fenotípica dos demais caracteres, conforme o interesse dos melhoristas.Termos para indexação: Phaseolus vulgaris, precocidade, resposta correlacionada à seleção. Phenotypic recurrent selection for early flowering of 'Carioca' common beanAbstract -The objective of this work was to evaluate the efficiency of phenotypic recurrent selection for the number of days until blooming in common bean, and to verify if this selection affected other traits. One S 0 population derived from the mixture of the F 2 populations of 11 hybrid combinations evaluated for earliness was used. The plants of the S 0 (cycle 0) which bloomed first were crossed to obtain cycle I. To go on with the selection the obtained seeds were used. The process was repeated until the fifth selection cycle. Fifty-three S 1:2 progenies of each cycle were used for evaluation of the genetic progress. The number of days to flowering, severity of angular leaf spot (Phaeoisariopsis griseola), number of days to maturation, yield and grain type were evaluated. A selection gain of 2.2% per year was observed, which indicates that phenotypic recurrent selection reduced the number of days to flowering. The selection for the number of days to flowering had no correlated response with other evaluated traits, indicating that progeny selection for early flowering can be associated with the phenotypic expression of other traits, according to the breeder's interest.Index terms: Phaseolus vulgaris, earliness, correlated response to selection. IntroduçãoO feijoeiro está entre as espécies cultivadas com menor duração de ciclo que, no Brasil, normalmente, varia de 85 a 90 dias. Essa tem sido a principal razão para o seu cultivo sob irrigação e em rotação com outras ...

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Selection aiming at upright growth habit common bean with carioca type grains

Cited by 30 publications

References 10 publications

Recurrent mass selection for upright plant architecture in common bean

Recurrent mass selection for upright plant architecture in common bean

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

Seleção recorrente fenotípica para florescimento precoce de feijoeiro 'Carioca'

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