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| 16. |  | SILVA JÚNIOR, C. D.; MARTINS, M. A. G.; SICOLI, A. H.; BALSADI, O. V.; NASCIMENTO, P. P. Novos arranjos institucionais para o fortalecimento da agricultura familiar: uma abordagem territorial. In: NASCIMENTO, P. P.; SICOLI, A. H.; MARTINS, M. A. G.; BALSADI, O. V.; SILVA JÚNIOR, C. D. da. (Ed.). Inovações em desenvolvimento territorial: novos desafios para a Embrapa. Brasília, DF: Embrapa Informação Tecnológica: Embrapa-Departamento de Transferência de Tecnologia. p. 63-89.| Biblioteca(s): Embrapa Unidades Centrais. |
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| Registros recuperados : 22 | |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Meio-Norte. Para informações adicionais entre em contato com cpamn.biblioteca@embrapa.br. |
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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