CRESCIMENTO VEGETATIVO DE CULTIVARES DE CAFEEIRO RESISTENTES Á FERRUGEM EM MINAS GERAIS
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Data
2009
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Resumo
A obtenção de cultivares portadoras de resistência genética à ferrugem é a melhor estratégia de controle da doença, entretanto, estas cultivares precisam ter uma boa adaptabilidade e estabilidade fenotípica nos diferentes ambientes do Estado visando bom desenvolvimento das plantas e elevada produtividade. O objetivo desse trabalho foi caracterizar o desenvolvimento vegetativo inicial de cultivares de cafeeiro resistente à ferrugem em diferentes ambientes. O experimento foi conduzido, em cinco locais dentro do Estado de Minas Gerais, com delineamento experimental em blocos casualizados, com três repetições e parcelas constituídas por dez plantas.Avaliou-se 25 cultivares, sendo 22 pertencentes ao grupo das resistentes à ferrugem, com implantação em dezembro de 2005. Analisou-se as seguintes características com as plantas apresentando 12 meses de idade: diâmetro de caule, altura de planta, número de ramos plagiotrópicos e comprimento do primeiro ramo plagiotrópico.Os resultados obtidos pode-se concluir que existe variabilidade entre as diferentes cultivares resistentes à ferrugem e que o ambiente de cultivo interfere no desempenho da planta; os cafeeiros conduzidos em Patrocínio-MG, apresentaram maior desenvolvimento devido a utilização de irrigação e a cultivar Paraíso MG 1 apresentou menor desenvolvimento quando comparada com as demais cultivares para todos os locais de cultivo.
The obtaining cultivars carrying genetic resistance to rust is the best control strategy for the disease, however, these cultivars need to have good adaptability and phenotypic stability under the various enviornments of this State, seeking good plant development and high productivity. The objective of this work was to characterize the initial vegetative development of rust resistant coffee plant cultivars under different enviornments. The experiment was carried out, in five places within the State of Minas Gerais, in a random block experimental layout in, with three repetitions and parcels made up of ten plants. 25 cultivars were evaluated, 22 belonging to the rust resistant group, with implantation in December of 2005. The following characteristics were analyzed with the plants at 12 months of age: stem diameter, plant height, number of plagiotropic branches and length of the first plagiotropic branch. From the results obtained, it can be concluded that variability exists among the different rust resistant cultivars and that the cultivation enviornment interferes in the plant performance; the coffee plants conducted in Patrocínio -MG, presented higher development due to irrigation use and the Paraíso MG 1 cultivar presented lower development when compared to the other cultivars in all the cultivation sites.
The obtaining cultivars carrying genetic resistance to rust is the best control strategy for the disease, however, these cultivars need to have good adaptability and phenotypic stability under the various enviornments of this State, seeking good plant development and high productivity. The objective of this work was to characterize the initial vegetative development of rust resistant coffee plant cultivars under different enviornments. The experiment was carried out, in five places within the State of Minas Gerais, in a random block experimental layout in, with three repetitions and parcels made up of ten plants. 25 cultivars were evaluated, 22 belonging to the rust resistant group, with implantation in December of 2005. The following characteristics were analyzed with the plants at 12 months of age: stem diameter, plant height, number of plagiotropic branches and length of the first plagiotropic branch. From the results obtained, it can be concluded that variability exists among the different rust resistant cultivars and that the cultivation enviornment interferes in the plant performance; the coffee plants conducted in Patrocínio -MG, presented higher development due to irrigation use and the Paraíso MG 1 cultivar presented lower development when compared to the other cultivars in all the cultivation sites.
Descrição
Trabalho apresentado no Simpósio de Pesquisa dos Cafés do Brasil (6. : 2009 : Vitória, ES). Anais Brasília, D.F: Embrapa - Café, 2011
Palavras-chave
melhoramento genético; ferrugem; café; ambientes., genetic improvement; rust; coffee; enviornments.
Citação
Carvalho, Alex Mendonça de; Oliveira, Alexandrino Lopes de; Botelho, César Elias; Mendes, Antonio Nazareno Guimarães; Ferreira, André Dominghetti; Oliveira, Luiz Paulo Vilela de. Crescimento vegetativo de cultivares de cafeeiro resistentes á ferrugem em Minas Gerais. In: Simpósio de Pesquisa dos cafés do Brasil (6. : 2009 : Vitória, ES). Anais Brasília, D.F: Embrapa - Café, 2011 (1 CD-ROM), 6p.