genetic parameter estimates in yellow passion fruit based on design i

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ID: 147564
2009
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Abstract
The aim of this work was to study the genetic parameters, to obtaine the progenies by crossings among the yellow passion fruits cultivars (Passiflora edulis f. flavicarpa), following the Design I. The results of the variance analysis demonstrated large variability to be exploited in the population. The trait number of fruit per plant presented the largest additive genetic variation coefficient, demonstrating that larger gains could be obtained for the trait. In terms of genetic action, number of fruits per plant, skin thickness and number of days by flowering have demonstrated to be characterized by the overdominance. Other important traits seem to have presented larger addictive effect than the dominance, as weight, length and width of fruits. The highest values of the coefficients of heritabilities were obtained for the males and the smallest for the females within males, and for the selection the coefficients should be used in the narrow sense.
Com o objetivo de se estimarem parâmetros genéticos, procedeu-se a obtenção de progênies por cruzamentos entre cultivares de maracujá amarelo (Passiflora edulis f. flavicarpa) seguindo o Delineamento I. Os resultados da análise de variância demonstraram existir grande variabilidade a ser explorada na população. Número médio de frutos expressou o maior coeficiente de variação genético aditivo, demonstrando que maiores ganhos podem ser obtidos para o caráter. Em termos de ação gênica, número de frutos por planta, espessura de casca e número de dias para o florescimento demonstraram ser caracterizadas por efeito sobredominante dos genes. Outras características importantes apresentaram efeito aditivo maior do que o dominante, como ocorreu com peso, comprimento e largura de frutos. Os valores dos coeficientes de herdabilidade mais elevados foram obtidos para famílias de machos e os menores para famílias de fêmeas dentro de machos, sendo que para fins de seleção devem ser utilizados os coeficientes no sentido restrito.
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gonalves2009braziliangenetic Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors ;Gustavo Menezes Gonçalves;Alexandre Pio Viana;Messias Gonzaga Pereira;Francisco Valdevino Bezerra Neto;Antônio Teixeira do Amaral Júnior;Telma Nair Santana Pereira;Tiago José Menezes Gonçalves
Journal current drug delivery
Year 2009
DOI
10.1590/S1516-89132009000300002
URL
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