Physicochemical diversity of jabuticaba fruits on a site of natural occurrence/Diversidade fisico-quimica dos frutos de jabuticabeiras em um sitio de ocorrencia natural
Knowing genetic variability of species, expressed by morphological and agronomic characteristics, is essential for guiding its conservation and management to support breeding programs. The aim of this study was to evaluate the physicochemical diversity of jabuticaba fruits (Plinia cauliflora) on a s...
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Published in | Revista Brasileira de fruticultura p. 107 |
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Main Authors | , , , , |
Format | Journal Article |
Language | Spanish |
Published |
Sociedade Brasileira de Fruticultura
01.02.2016
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Subjects | |
Online Access | Get full text |
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Summary: | Knowing genetic variability of species, expressed by morphological and agronomic characteristics, is essential for guiding its conservation and management to support breeding programs. The aim of this study was to evaluate the physicochemical diversity of jabuticaba fruits (Plinia cauliflora) on a site of natural occurrence in Passo Fundo, RS. In a population of approximately 300 jabuticaba trees it was collected fruits from 40 genotypes to evaluate twelve characteristics. Data were submitted to descriptive analysis, correlation and multivariate analysis. It was used UPGMA clustering method, using average Euclidean distance. The G18 and G35 genotypes distinguished by the characteristics related to fruit size and flavor and because of their high genetic divergence. The TSS/TA ratio was the characteristics which most contributed to genetic divergence (41.56%), followed by pulp percentage (25.76%) and peel (23.24%). Six groups of similar genotypes were formed. It was found that native jabuticaba trees from the same site of occurrence have fruits with variables physicochemical characteristics, revealing the existence of genotypes with interesting characteristics to breeding programs of this specie. Index terms: genetic divergence, native fruits, jabuticaba tree, Plinia cauliflora. Conhecer a variabilidade genetica de uma especie, manifestada em caracteres morfologicos e agronomicos, e fundamental para orientar sua conservacao e manejo, e subsidiar programas de melhoramento. O objetivo deste estudo foi avaliar a diversidade fisico-quimica dos frutos de jabuticabeiras (Plinia cauliflora) em um sitio de ocorrencia natural, no municipio de Passo Fundo-RS. Em uma populacao de aproximadamente 300 jabuticabeiras, coletaram-se frutos de 40 genotipos para a avaliacao de doze caracteres. Os dados foram submetidos a analise descritiva, de correlacao e multivariada. Utilizou-se do metodo de agrupamento UPGMA, a partir da distancia euclidiana media. Os genotipos G18 e G35 destacaram-se pelas caracteristicas relacionadas com o tamanho e o sabor dos frutos, e tambem por apresentarem alta divergencia genetica com os demais genotipos. A relacao SST/ATT foi o caractere que mais contribuiu para a divergencia genetica (41,56%), seguido pela porcentagem de polpa (25,76%) e de casca (23,24%). Houve a formacao de seis grupos de genotipos similares. Verificou-se, portanto, que jabuticabeiras nativas de um mesmo sitio de ocorrencia apresentam frutos com caracteristicas fisico-quimicas variaveis, revelando a existencia de genotipos com caracteres de interesse no melhoramento da especie. Termos para indexacao: divergencia genetica, frutas nativas, jabuticaba, Plinia cauliflora. |
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ISSN: | 0100-2945 |
DOI: | 10.1590/0100-2945-267/14 |