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Registro Completo |
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Biblioteca(s): |
Embrapa Meio-Norte. |
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Data corrente: |
16/09/1998 |
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Data da última atualização: |
16/09/1998 |
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Autoria: |
SOUZA, V. A. B. de; BYRNE, D. H.; TAYLOR, J. F. |
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Título: |
Heritability, genetic and phenotypic correlations, and predicted selection response of quantitative traits in peach: II. An analysis of several fruit traits. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
Journal of the American Society for Horticultural Science, v.123, n.4, p.604-611, 1998. |
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Idioma: |
Inglês |
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Conteúdo: |
Thirteen peach [Prunus persica (L.) Batsch] fruit characteristics were investigated for 3 years, 1993, 1994, and 1995, in College Station, Texas, to determine heritability, genetic and phenotypic correlations, and predicted response to selection. Seedlings of 108 families resulting from crosses among 42 peach cultivars and selections were used in the evaluations. A mixed linear model, with years treated as fixed and additive genotypes as random factors, was emploved to analyze the data. Best linear unbiased prediction (BLUP) was used to estimate fixed effects. Restricted maximum likelihood (REML) was used to estimate variance components, and a multiple trait model was used to estimate genetic and phenotypic covariances between traits. Genetic and phenotypic correlations >- 0.65 and < 0.30 were considered strong or very strong and weak, respectively. Date of ripening, fruit development period (FDP) and date of full bloom had the highest heritability (h2) estimates, 0.94, 0.91, and 0.78, respectively. Fruit cheek diameter and titratable acidity (h2 = 0.31) were the traits with the lowest estimates. Fruit development period, fruit blush, and date of ripening had the highest predicted selection responses, whereas fruit suture, fruit cheek, L/W12 (ratio fruit length to average fruit diameters), and fruit tip had the lowest values. Most genetic correlations were >- 0.30 and were, in general, much higher than the corresponding phenotypic correlations. All four measures of fruit size were genetically and phenotypically very strongly correlated. Important genetic correlation estimates were also observed for date of ripening with FDP, date of ripening and FDP with fruit blush, SS and TA, and SS with TA. Direct selection practiced solely for early ripening and short FDP is expected to have a greater effect on correlated traits than direct selection for early bloom and large fruit mass. MenosThirteen peach [Prunus persica (L.) Batsch] fruit characteristics were investigated for 3 years, 1993, 1994, and 1995, in College Station, Texas, to determine heritability, genetic and phenotypic correlations, and predicted response to selection. Seedlings of 108 families resulting from crosses among 42 peach cultivars and selections were used in the evaluations. A mixed linear model, with years treated as fixed and additive genotypes as random factors, was emploved to analyze the data. Best linear unbiased prediction (BLUP) was used to estimate fixed effects. Restricted maximum likelihood (REML) was used to estimate variance components, and a multiple trait model was used to estimate genetic and phenotypic covariances between traits. Genetic and phenotypic correlations >- 0.65 and < 0.30 were considered strong or very strong and weak, respectively. Date of ripening, fruit development period (FDP) and date of full bloom had the highest heritability (h2) estimates, 0.94, 0.91, and 0.78, respectively. Fruit cheek diameter and titratable acidity (h2 = 0.31) were the traits with the lowest estimates. Fruit development period, fruit blush, and date of ripening had the highest predicted selection responses, whereas fruit suture, fruit cheek, L/W12 (ratio fruit length to average fruit diameters), and fruit tip had the lowest values. Most genetic correlations were >- 0.30 and were, in general, much higher than the corresponding phenotypic correlations. All four measures of fruit siz... Mostrar Tudo |
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Palavras-Chave: |
Fruit breeding; Heranca quantitativa; Multiple trait select; Quantitative inheritance; Selecao de caracteristica multipla. |
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Thesagro: |
Fruta; Prunus Persica. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02696naa a2200229 a 4500
001 1054499
005 1998-09-16
008 1998 bl --- 0-- u #d
100 1 $aSOUZA, V. A. B. de
245 $aHeritability, genetic and phenotypic correlations, and predicted selection response of quantitative traits in peach$bII. An analysis of several fruit traits.
260 $c1998
520 $aThirteen peach [Prunus persica (L.) Batsch] fruit characteristics were investigated for 3 years, 1993, 1994, and 1995, in College Station, Texas, to determine heritability, genetic and phenotypic correlations, and predicted response to selection. Seedlings of 108 families resulting from crosses among 42 peach cultivars and selections were used in the evaluations. A mixed linear model, with years treated as fixed and additive genotypes as random factors, was emploved to analyze the data. Best linear unbiased prediction (BLUP) was used to estimate fixed effects. Restricted maximum likelihood (REML) was used to estimate variance components, and a multiple trait model was used to estimate genetic and phenotypic covariances between traits. Genetic and phenotypic correlations >- 0.65 and < 0.30 were considered strong or very strong and weak, respectively. Date of ripening, fruit development period (FDP) and date of full bloom had the highest heritability (h2) estimates, 0.94, 0.91, and 0.78, respectively. Fruit cheek diameter and titratable acidity (h2 = 0.31) were the traits with the lowest estimates. Fruit development period, fruit blush, and date of ripening had the highest predicted selection responses, whereas fruit suture, fruit cheek, L/W12 (ratio fruit length to average fruit diameters), and fruit tip had the lowest values. Most genetic correlations were >- 0.30 and were, in general, much higher than the corresponding phenotypic correlations. All four measures of fruit size were genetically and phenotypically very strongly correlated. Important genetic correlation estimates were also observed for date of ripening with FDP, date of ripening and FDP with fruit blush, SS and TA, and SS with TA. Direct selection practiced solely for early ripening and short FDP is expected to have a greater effect on correlated traits than direct selection for early bloom and large fruit mass.
650 $aFruta
650 $aPrunus Persica
653 $aFruit breeding
653 $aHeranca quantitativa
653 $aMultiple trait select
653 $aQuantitative inheritance
653 $aSelecao de caracteristica multipla
700 1 $aBYRNE, D. H.
700 1 $aTAYLOR, J. F.
773 $tJournal of the American Society for Horticultural Science$gv.123, n.4, p.604-611, 1998.
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Registro original: |
Embrapa Meio-Norte (CPAMN) |
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Tipo/Formato |
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Registro Completo
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
09/05/2006 |
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Data da última atualização: |
22/07/2022 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
RODRIGUES, M. A.; SANTOS, I. C. N.; SANTOS, C. A. F.; COELHO, A. K. N. S.; LIMA, R. S. N. |
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Afiliação: |
CARLOS ANTONIO FERNANDES SANTOS, CPATSA. |
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Título: |
Avaliação do teor de ácido pirúvico em bulbos de cebola de diferentes consistências, proveniente da cultivar Alfa São Francisco. |
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Ano de publicação: |
2006 |
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Fonte/Imprenta: |
In: ENCONTRO DE GENÉTICA DO NORDESTE, 17., 2006, Recife. Conhecimentos para o novo milênio: resumos. Recife: SBG, 2006. |
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Descrição Física: |
1 CD-ROM. |
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Idioma: |
Português |
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Conteúdo: |
O objetivo deste trabalho foi à quantificação de dois diferentes grupos de bulbos de ‘Alfa São Francisco’, de maior e menor firmeza, ao aperto do s dedos, de forma a acelerar o processo de identificação d e bulbos de cebola doce para recombinação genética. |
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Palavras-Chave: |
ariedade; Cebola doce; Pungência. |
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Thesagro: |
Allium Cepa; Cebola. |
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Thesaurus NAL: |
Onions. |
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Categoria do assunto: |
A Sistemas de Cultivo |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPATSA/33387/1/OPB907.pdf
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Marc: |
LEADER 01042nam a2200241 a 4500
001 1157031
005 2022-07-22
008 2006 bl uuuu u00u1 u #d
100 1 $aRODRIGUES, M. A.
245 $aAvaliação do teor de ácido pirúvico em bulbos de cebola de diferentes consistências, proveniente da cultivar Alfa São Francisco.
260 $aIn: ENCONTRO DE GENÉTICA DO NORDESTE, 17., 2006, Recife. Conhecimentos para o novo milênio: resumos. Recife: SBG$c2006
300 $c1 CD-ROM.
520 $aO objetivo deste trabalho foi à quantificação de dois diferentes grupos de bulbos de ‘Alfa São Francisco’, de maior e menor firmeza, ao aperto do s dedos, de forma a acelerar o processo de identificação d e bulbos de cebola doce para recombinação genética.
650 $aOnions
650 $aAllium Cepa
650 $aCebola
653 $aariedade
653 $aCebola doce
653 $aPungência
700 1 $aSANTOS, I. C. N.
700 1 $aSANTOS, C. A. F.
700 1 $aCOELHO, A. K. N. S.
700 1 $aLIMA, R. S. N.
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