Estimativas de ganho genético por diferentes critérios de seleção em genótipos de alfafa

Vasconcelos, Edmar Soares de; Ferreira, Reinaldo de Paula; Cruz, Cosme Damião; Moreira, Adônis; Rassini, J. B.; Freitas, A. R. de

doi:10.1590/s0034-737x2010000200011

Cited by 39 publications

(49 citation statements)

References 9 publications

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“…The difference observed in the selection of genotypes by these two methodologies was also reported by Vasconcelos et al, (2010) when working with selection of progenies of alfalfa.…”

Section: Resultssupporting

confidence: 53%

“…However, when the indices are compared in two phases, the genetic gains obtained by the two methodologies were similar; the Elston's index was superior for fruit number and rind thickness, while the index of Mulamba & Mock was superior for fruit mass and shell mass. Vasconcelos et al, (2010) found that the highest estimates of genetic gain for productive, morphological and chemical characteristics in superior genotypes of alfalfa were obtained with the indices of Mulamba & Mock (1978), distance from the ideotype and the Elston's index (1963). Cruz et al, (1993) and Costa et al, (2004) also found positive results using the indices of Mulamba & Mock in studies with corn and soybean, respectively.…”

Section: Resultsmentioning

confidence: 99%

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Simultaneous selection in progenies of yellow passion fruit using selection indices

et al. 2012

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RESUMO Seleção simultânea por índice de seleção em progênies de maracujazeiro-azedoEste trabalho objetivou a verificação da eficiência da seleção simultânea (índices de seleção), por meio dos ganhos genéticos estimados, e pela comparação das metodologias de Mulamba & Mock e de Elston. O trabalho foi realizado na Universidade Federal de Viçosa, avaliando-se 26 progênies de irmãos germanos de maracujazeiro-azedo, para as características intrínsecas da produção, tais como: número de frutos, peso do fruto, comprimento e diâmetro do fruto; e para as características do fruto, como: espessura de casca, teor de sólidos solúveis e acidez. As duas metodologias foram aplicadas, primeiro, na análise conjunta das características do fruto e das características intrínsecas da produção, em um único momento de seleção, e, segundo, na análise em dois momentos, na qual priorizaram-se as caracterís-ticas intrínsecas da produção, no primeiro momento, e, posteriormente, no segundo momento, escolheram-se, entre as progênies selecionadas do primeiro momento, as melhores para características do fruto. Os dados foram submetidos à análise de variância, a fim de se verificar a existência de variabilidade genética entre as progênies. Verificou-se que a

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“…The difference observed in the selection of genotypes by these two methodologies was also reported by Vasconcelos et al, (2010) when working with selection of progenies of alfalfa.…”

Section: Resultssupporting

confidence: 53%

Section: Resultsmentioning

confidence: 99%

Simultaneous selection in progenies of yellow passion fruit using selection indices

et al. 2012

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“…However, the selection of superior progeny is no easy task, since characteristics of importance, the majority of which are quantitative, show complex behaviour, being influenced by the environment and interrelated in such a way that the selection or alteration of one causes a series of changes in another (RODRIGUES et al, 2013;SILVA et al, 2009;VASCONCELOS et al, 2010).…”

Section: Introductionmentioning

confidence: 99%

Multivariate approach in the selection of superior soybean progeny which carry the RR gene

Dallastra¹,

Unêda-Trevisoli²,

Ferraudo³

et al. 2014

Rev. Ciênc. Agron.

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-Efficiency in the use of genetic variability, whether existing or created, increases when properly explored and analysed. Incorporation of biotechnology into breeding programs has been the general practice. The challenge for the researcher is the constant development of new and improved cultivars. The aim of this experiment was to select progenies with superior characteristics, whether or not carriers of the RR gene, derived from bi-parental crosses in the soybean, with the help of multivariate techniques. The experiment was carried out in a family-type experimental design, including controls, during the agricultural year 2010/2011 and 2011/2012 in Jaboticabal in the Brazilian State of São Paulo. From the F 3 generation, phenotypically superior plants were selected, which were evaluated for the following traits: number of days to flowering; number of days to maturity; height of first pod insertion; plant height at maturity; lodging; agronomic value; number of branches; number of pods per plant; 100-seed weight; number of seeds per plant; grain yield per plant. Given the results, it appears possible to select superior progeny by principal component analysis. Cluster analysis using the K-means method links progeny according to the most important characteristics in each group and identifies, by the Ward method and by means of a dendrogram, the structure of similarity and divergence between selected progeny. Both methods are effective in aiding progeny selection.

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“…Another studies also report superiority of this index for alfalfa (VASCONCELOS et al, 2010), soybean (BÁRBARO et al, 2007), yellow passion fruit (ROSADO et al, 2012), popcorn (AMARAL JÚNIOR et al, 2010), cowpea (BERTINI et al, 2010), maize (RODRIGUES et al, 2011) and banana (LESSA et al, 2010).…”

Section: Resultsmentioning

confidence: 90%

“…These indexes are widely used in several crops (BÁRBARO et al, 2007;AMARAL JÚNIOR et al, 2010;BERTINI et al, 2010;VASCONCELOS et al, 2010;RODRIGUES et al, 2011;ROSADO et al, 2012;). MULAMBA & MOCK (1978) have been the most adopted, certainly for its simplicity and positive results.…”

Section: Introductionmentioning

confidence: 99%

Indexes in the comparison of pre-commercial genotypes of common bean

et al. 2014

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The objective of this research was to analyze the use of cultivar index selection (GARCIA, 1998) ELSTON (1963), MULAMBA & MOCK (1978), SCHWARZBACH (1972) and GARCIA (1998) GARCIA (1998) proved to be more effi cient than the other indexes, since it showed more correlation with PRODV and selected more productive strains. The recommended genotypes were: UENF 7-5-1 and UENF 7-6-1, followed by the genotypes

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Estimativas de ganho genético por diferentes critérios de seleção em genótipos de alfafa

Cited by 39 publications

References 9 publications

Simultaneous selection in progenies of yellow passion fruit using selection indices

Simultaneous selection in progenies of yellow passion fruit using selection indices

Multivariate approach in the selection of superior soybean progeny which carry the RR gene

Indexes in the comparison of pre-commercial genotypes of common bean

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