Transferência do fator caturra para o cultivar Mundo Novo de Coffea arabica

Carvalho, Ana Maria; Mônaco, L. C.

doi:10.1590/s0006-87051972000100031

Cited by 20 publications

(11 citation statements)

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“…This was due to the process of autogamy and narrow genetic base, resulting from the process of homozygosis and the successive selection cycles (Moncada and Mccouch 2004;Missio et al 2009b). This was also confirmed by the fact that the arabica genetic materials were probably derived from a few seeds that survived the efforts of expanding the Yemen borders for the cultivation of coffee plants, reaching the present cultivation sites (Vossen 1985 (Carvalho and Monaco 1972). 'Mundo Novo' (Sumatra x 'Bourbon Vermelho') was also grouped with the parental 'Bourbon Vermelho'.…”

Section: Discussionmentioning

confidence: 69%

Molecular characterization of arabica and Conilon coffee plants genotypes by SSR and ISSR markers

Motta

Soares

Ferrão

et al. 2014

Braz. arch. biol. technol.

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Section: Discussionmentioning

confidence: 69%

Molecular characterization of arabica and Conilon coffee plants genotypes by SSR and ISSR markers

Motta

Soares

Ferrão

et al. 2014

Braz. arch. biol. technol.

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“…Actually, all Catuaí inbred lines are derived from a cross between cultivar Mundo Novo and cultivar Caturra, containing the allele Ct that causes shortening of branch internodes. Catuaí cultivars were developed from progenies backcrossed to Mundo Novo (Carvalho & Monaco, 1972). Therefore, genetic differences between cultivars Mundo Novo and Catuaí are expected to be very small.…”

Section: Discussionmentioning

confidence: 99%

Genetic diversity of cultivated Coffea arabica inbred lines assessed by RAPD, AFLP and SSR marker systems

Maluf

Silvestrini

Ruggiero

et al. 2005

Sci. agric. (Piracicaba, Braz.)

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One of the greatest problems in Coffea arabica breeding is identifying precisely any inbred line, based only on botanical and agronomical descriptors, because of the reduced genetic variability of the species, close pedigree origin, which results in small phenotypic variation. Recently, molecular markers have been used for plant germplasm characterization and identification in several commercial species. This work evaluates the reliability of three marker systems: RAPD, AFLP and SSR, to characterize the genetic variability of commercially-used Coffea inbred lines developed by the Instituto Agronômico (IAC), and their potential for cultivar identification. All methods identified polymorphisms among the cultivars. The genetic diversity recognized by the methods is very similar, although is very narrow. RAPD and SSR marker systems grouped more efficiently the evaluated cultivars according to parental origin. None of the methods allowed inbred line identification. Therefore for varietal protection, it would be necessary using a combination of botanical, agronomical and molecular markers descriptors for precise cultivar identification. Key words: coffee, cultivar identification, molecular markers CARACTERIZAÇÃO DA DIVERSIDADE GENÉTICA DE LINHAGENS COMERCIAIS DE Coffea arabica ATRAVÉS DE MARCADORES MOLECULARES DO TIPO RAPD, AFLP E SSRRESUMO: A identificação de linhagens de Coffea arabica a partir de descritores botânicos e agronômicos é um problema para o desenvolvimento de cultivares. Basicamente, a limitada variação fenotípica observada em cultivares é o resultado de uma estreita variabilidade genética em C. arabica associada com uma origem genealógica próxima. Recentemente, os uso de marcadores moleculares tem contribuído para a caracterização e identificação de várias espécies de interesse comercial. O objetivo deste trabalho foi comparar a confiabilidade de três tipos de marcadores moleculares, RAPD, AFLP e SSR, para a caracterização da variabilidade genética e uma possível identificação de linhagens comerciais de Coffea desenvolvidas pelo IAC. Os métodos avaliados permitiram identificar polimorfismos entre cultivares. A variabilidade genética detectada por eles é muito semelhante, ainda que reduzida. Marcadores do tipo RAPD e SSR foram mais eficientes em análises de parentesco, e o agrupamento das linhagens correspondeu à sua origem genealógica. No entanto, nenhum dos métodos testados permitiu a identificação individual de linhagens. Neste caso, a utilização conjunta de descritores botânicos, agronômicos e marcadores moleculares é recomendada para a identificação precisa de linhagens, visando processos de proteção legal de cultivares de Coffea.

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“…They derive from varietal crosses and variation is present for yield and other characteristics between lines of these cultivars (CARVALHO, 1967, CARVALHO & MONACO, 1972. Both cultivars are susceptible to race II of H. vastatvix.…”

Section: Introductionmentioning

confidence: 99%