Biblioteca do Café
URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/1
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Resultados da Pesquisa
Item IPR 106: new Arabica coffee cultivar, resistant to some Meloidogyne paranaensis and M. incognita nematode populations of Paraná(Crop Breeding and Applied Biotechnology, 2020) Sera, Gustavo Hiroshi; Machado, Andressa Cristina Zamboni; Ito, Dhalton Shiguer; Shigueoka, Luciana Harumi; Silva, Santino Aleandro da; Sera, TumoruCultivar IPR 106 resulted from a spontaneous hybridization between “Icatu IAC 925” and an unknow dwarf plant. It is a dwarf cultivar with high rusticity, late ripening cycle, large grains, excellent cup quality and resistance to some populations of the nematodes Meloidogyne paranaensis and M. incognita found in the state of Paraná.Item IPR 100 – Rustic dwarf Arabica coffee cultivar with resistance to nematodes Meloidogyne paranaensis and M. incognita(Crop Breeding and Applied Biotechnology, 2017-03) Sera, Tumoru; Sera, Gustavo Hiroshi; Fazuoli, Luiz Carlos; Machado, Andressa Cristina Zamboni; Ito, Dhalton Shiguer; Shigueoka, Luciana Harumi‘IPR 100’ was derived from a crossing between “Catuaí” and a hybrid(“Catuaí” x BA-10 coffee). ‘IPR 100’ is a medium size dwarf cultivar with high rusticity, with late ripening cycle, and with resistance to Meloidogyne paranaensis and to some M. incognita populations.Item Histopathological characterization of Coffea arabica cultivar IPR 106 resistance to Meloidogyne paranaensis(Escola Superior de Agricultura "Luiz de Queiroz", 2019-09) Shigueoka, Luciana Harumi; Dorigo, Orazília França; Arita, Lucas Yuuki; Fonseca, Inês Cristina de Batista; Silva, Santino Aleandro da; Sera, Gustavo Hiroshi; Machado, Andressa Cristina ZamboniMeloidogyne species are widely distributed in coffee growing areas in Brazil, where M. paranaensis is responsible to significant losses to the crop. One of the main management strategies is the use of resistant cultivars, such as Apoatã rootstock and cultivars IPR 100 and IPR 106. However, the parasitic relationship between coffee and M. paranaensis in culti- vars carrying resistance genes has been poorly understood. The objective of this paper was to characterize the resistance response of Coffea arabica cv. IPR 106 to M. paranaensis. For this, penetration and histopathological studies were carried out using root tissues parasitized by the nematode. ‘IPR 106’ and ‘Mundo Novo’ (susceptible cultivar) seedlings were inoculated with 4,000 eggs of M. paranaensis and, 15 days after inoculation (DAI), roots were stained with fuch- sine to verify the penetration rates of the nematode. Histopathological studies were conducted at 15, 30, 45 and 60 DAI and nematode reproduction was calculated at 120 DAI. ‘IPR 106’ did not avoid completely nematode penetration at 15 DAI, although the number of nematodes was 50 % lower than in Mundo Novo, disregarding the hypothesis of a pre-infectional mechanism of resistance that could prevent nematode penetration completely. However, giant cells and col- lapsed nematodes were observed in ‘IPR 106’ at 30 DAI, suggesting that the resistance mecha- nism to M. paranaensis in ‘IPR 106’ involves a post-infectional response and could be mediated by a hypersensitive reaction.Item IOR 100 e IPR 106 – cultivares de café arábica com resistência simultânea aos nematoides Meloidogyne paranaensis e M. incognita(Embrapa Café, 2014) Ito, Dhalton Shiguer; Sera, Gustavo Hiroshi; Sera, Tumoru; Machado, Andressa Cristina Zamboni; Silva, Santino Aleandro da; Shigueoka, Luciana Harumi; Souza, Marcelo Ghiraldi de; Matunaga, Daniela Sayuri; Ferreira, Joice MançoO objetivo deste trabalho foi avaliar a resistência simultânea das cultivares de café arábica IPR 100 e IPR 106 aos nematoides Meloidogyne paranaensis e M. incognita.