Seleção de genótipos parentais de acerola com base na divergência genética multivariada

Carpentieri-Pípolo, Valéria; Destro, Deonisio; Prete, Cássio Egídio Cavenaghi; Gonzales, Maria Glória Nilo; Popper, Irene; Zanatta, Silvia Santana; Silva, André Martins Da

doi:10.1590/s0100-204x2000000800014

Cited by 28 publications

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“…CRUZ & REGAZZI (2004) suggest that there wasn't involvement of individuals with same pattern of dissimilarity at the crossings, not restricting the genetic variability, avoiding negative effects on earnings obtained by selection. As reported by ABREU et al (1999) and CARPENTIERI-PÍPOLO et al (2000), the best hybrid combinations to be tested in breeding program, should involve divergent parents with high average performance. According to CRUZ & REGAZZI (2004), the establishment of groups with genotypes with homogeneity within and heterogeneity among groups is the starting point for a more thorough assessment of them, in order to realize its use in breeding programs.…”

Section: Resultsmentioning

confidence: 96%

Genetic divergence among soybean cultivars in irrigated lowland in the State of Tocantins

et al. 2012

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Section: Resultsmentioning

confidence: 96%

Genetic divergence among soybean cultivars in irrigated lowland in the State of Tocantins

et al. 2012

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“…Entre estes, encontramse associados os acessos UEL-9 e UEL-28, que apresentam a mesma taxa de germinação (49 %) e os acessos UEL-26 e Iapar-1, os quais apresentam como principal característica, concentrações similares de vitamina C, isto é, 859 mg e 669 mg, por 100 g de polpa, respectivamente (Carpentieri-Pípolo, 2000b). Os acessos UEL-6 e UEL-10 (grupo 4) associam-se com 79% de similaridade e mostram, em média, uma concentração de vitamina C de 1470 mg por 100 g de polpa (Carpentieri-Pípolo, 2000b). O maior e o menor grau de similaridade genética foram observados entre os acessos UEL-08 e UEL-33 (95%) e entre Iapar-12 e UEL-06 (57%), respectivamente.…”

Section: Análise Genética Dos Marcadores Rapdunclassified

Uso de marcadores moleculares na análise da variabilidade genética em acerola (Malpighia emarginata D.C.)

Salla

Ruas

et al. 2002

Rev. Bras. Frutic.

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RESUMO -A acerola (Malpighia emarginata) é uma frutífera tropical encontrada nativa na América Central e no Norte da América do Sul, sendo de grande importância econômica e social devido ao seu alto conteúdo de vitamina C (ácido ascórbico). Pomares de acerola têm sido preferencialmente estabelecidos por métodos de propagação vegetiva. No entanto, a propagação sexuada por sementes é igualmente utilizada e permite revelar um alto grau de polimorfismo na cultura, possibilitando a identificação de genótipos portadores de características de interesse agronômico. Vinte e quatro acessos de acerola, pertencentes ao Banco Ativo de Germoplasma da Universidade Estadual de Londrina, foram analisados, usando marcadores RAPD (Random amplified Polymorphic DNA) e obtidos com iniciadores (primers) de seqüência simples repetidas (SSRs). Um total de 164 e 73 marcadores foram obtidos com primers de RAPD e SSR, respectivamente. Os marcadores obtidos foram analisados, usando o método de agrupamentos UPGMA. A análise comparativa dos dendrogramas gerados com os primers de RAPD e com os primers SSR mostrou que, enquanto alguns acessos se associaram em grupos diferentes, outros apresentaram a mesma associação. Entretanto, maior polimorfismo entre acessos foi detectado com os primers de RAPD. A análise dos resultados revelou a alta variabilidade contida na coleção, permitindo associar o grau de similaridade genética, obtido por marcadores de DNA, com caracteres morfológicos compartilhados entre os acessos.Termos para indexação: Acerola, Malpighia emarginata, marcadores RAPD e SSR, variabilidade genética. THE USE OF MOLECULAR MARKERS IN THE GENETIC VARIABILITY ANALYSIS OF ACEROLA (Malphighia emarginata)ABSTRACT -Acerola (Malpighia emarginata) is a tropical fruit native from Central America and north of South America. It has shown an increasing economic and social importance due to its high vitamin C (ascorbic acid) content. Vegetative propagation is the preferable method used to establish acerola plantations. However, propagation by seeds has also been used allowing the identification and selection of genotypes that carry characteristics of agronomic interest. Twenty-four acerola accesses, of the Active Germplasm Bank of the Universidade Estadual de Londrina, were analyzed using molecular markers obtained with random amplified polymorphic DNA (RAPD) and simple sequence repeated (SSRs) primers. A total of 164 and 73 markers were obtained with RAPD and SSR primers, respectively. Polymorfic markers were scored as present or absent and analyzed using the UPGMA cluster analysis. The results presented reveal high levels of polymorphism in the studied collection. Comparative analysis of the phenograms, generated with both RAPD and SSR primers, revealed that while some accesses clustered in different groups other accesses presented the same association. However, there was large RAPD variation among the accesses. The associations observed with molecular markers were, for many accesses, the same of those determined on the basis of morphological char...

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“…In Brazil, the research has been directed towards releasing new varieties, among which can be mentioned: Sertaneja [3], Olivier [4], UEL3-Dominga, UEL4-Lígia and UEL5-Natália [5]; UFRPE-7 and UFRPE-8 [6]. Nevertheless, vitamin C content depends on plant genetics, the maturity stage of fruits, harvest season, cultural methods adopted and other factors such as temperature, precipitation and insolation [7].…”

Section: Introductionmentioning

confidence: 99%

Preliminary selection of acerola genotypes in Brazil

Cavalcante¹,

Beckmann²,

Martins³

et al. 2007

Fruits

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Preliminary selection of acerola genotypes in Brazil.Abstract --Introduction. Breeding studies for acerola (Malpighia glabra) improvement aim at obtaining plants that produce fruits with uniform chemical and physical attributes, including high levels of vitamin C, which can provision the market with fresh fruit and frozen pulp. High variability in fruit quality is observed in Brazilian acerola crops, especially those propagated by seeds. In this context, the objective of our research was to evaluate the physical and chemical characteristics of Brazilian acerola genotype fruits. Materials and methods. Sixteen acerola genotypes were studied in Jaboticabal, São Paulo State, Brazil. A completely randomized design with sixteen treatments and six replications was adopted. Each treatment was represented by one genotype. Several parameters related to fruit quality, such as width, length, weight, pulp percentage, soluble solids (SS), titratable acidity (TA), [SS / TA] ratio and vitamin C content, were evaluated in fruits of the acerola genotypes. The results were submitted to variance analyses, the Tukey test and cluster analysis. Results and discussion. There was a statistical difference between the acerola genotypes studied. Three of them stood out as natural sources of vitamin C. In spite of fruit size, two acerola genotypes were found to have potential for fresh fruit production. In a general form, genotypes that presented a high [SS / TA] ratio had low vitamin C content. Conclusion. The acerola genotypes studied in Jaboticabal presented high variability, forming eleven groups in relation to fruit quality parameters.

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Seleção de genótipos parentais de acerola com base na divergência genética multivariada

Cited by 28 publications

References 1 publication

Genetic divergence among soybean cultivars in irrigated lowland in the State of Tocantins

Genetic divergence among soybean cultivars in irrigated lowland in the State of Tocantins

Uso de marcadores moleculares na análise da variabilidade genética em acerola (Malpighia emarginata D.C.)

Preliminary selection of acerola genotypes in Brazil

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