repetibilidade e correlações entre caracteres morfo-agronômicos de cajazeira repeatability and correlations among yellow mombim morphoagronomical traits
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2008
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Abstract
Objetivou-se estimar os coeficientes de repetibilidade em quatorze cajazeiras (Spondias mombin L.), no município de Teresina, PI, utilizando-se o método de análise de variância; determinar o número de medições necessárias para predição do valor real dos indivíduos e os coeficientes de correlação fenotípica entre os caracteres: comprimento e largura da folha, número de folíolos por folha, peso da panícula, número de frutos por panícula, comprimento, diâmetro e peso do fruto, peso da semente, rendimento de polpa, teor de sólidos solúveis, acidez titulável, relação sólidos solúveis/acidez. Os genótipos diferiram com relação a todos os caracteres avaliados, indicando a presença de variabilidade genética. As estimativas dos coeficientes de repetibilidade expressaram maior estabilidade para peso do fruto, diâmetro do fruto, peso da semente, acidez titulável e relação sólidos solúveis/acidez titulável, indicando maior precisão na predição do valor real desses caracteres, nas cajazeiras. A avaliação de onze frutos é suficiente para predizer o valor real de todos os caracteres, com 90% de confiabilidade. A seleção para maior produtividade de frutos pode ser alcançada através da seleção indireta para caracteres relacionados à folha. Panícula mais pesada pode ser obtida pela seleção indireta de genótipos com sementes de menor peso.
The objective of this work was to estimate the coefficient of repeatability in fourteen yellow mombim (Spondias mombin L.), in Teresina, Piauí State, through the variance analysis method, in order to determine the number of measures necessary for an accurate prediction of the real genotype value and the correlation coefficients among the leaf length, leaf width, number of leaflets for leaf, panicles weight, number of fruits for panicles, fruit length, fruit diameter, fruit weight, seed weight, pulp revenue, soluble solid (SS), titrable acidity (AT) and SS/AT ratio. The genotypes had significant differences in all traits, indicating the existence of genetic variability. The estimates of the coefficients of repeatability expressed a greater stability for fruit weight, fruit diameter, seed weight, titrable acidity and soluble solid/titrable acidity ratio, indicating more accuracy to the real value pediction of these yellow mombim traits. The evaluation of eleven fruits is enough to predict the real value of all characters with an accuracy of 90%. The selection for characters related to the leaf could lead to an indirect selection for high fruit yield. The high panicle weight could be selected through the indirect selection for low seed weight.
The objective of this work was to estimate the coefficient of repeatability in fourteen yellow mombim (Spondias mombin L.), in Teresina, Piauí State, through the variance analysis method, in order to determine the number of measures necessary for an accurate prediction of the real genotype value and the correlation coefficients among the leaf length, leaf width, number of leaflets for leaf, panicles weight, number of fruits for panicles, fruit length, fruit diameter, fruit weight, seed weight, pulp revenue, soluble solid (SS), titrable acidity (AT) and SS/AT ratio. The genotypes had significant differences in all traits, indicating the existence of genetic variability. The estimates of the coefficients of repeatability expressed a greater stability for fruit weight, fruit diameter, seed weight, titrable acidity and soluble solid/titrable acidity ratio, indicating more accuracy to the real value pediction of these yellow mombim traits. The evaluation of eleven fruits is enough to predict the real value of all characters with an accuracy of 90%. The selection for characters related to the leaf could lead to an indirect selection for high fruit yield. The high panicle weight could be selected through the indirect selection for low seed weight.
| Reference Key |
soares2008cinciarepetibilidade
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| Authors | ;Edson Basílio Soares;Regina Lucia Ferreira Gomes;José Elivalto Guimarães Campelo;Ângela Celis de Almeida Lopes;Carlos Humberto Aires Matos Filho |
| Journal | information and software technology |
| Year | 2008 |
| DOI |
10.1590/S1413-70542008000600025
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| URL | |
| Keywords | Keywords not found |
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