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URI permanente desta comunidadehttps://thoth.dti.ufv.br/handle/123456789/3352
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Item IAC Catuaí SH3 - a dwarf Arabica coffee cultivar with leaf rust resistance and drought tolerance(Crop Breeding and Applied Biotechnology, 2019) Fazuoli, Luiz Carlos; Braghini, Masako Toma; Silvarolla, Maria Bernadete; Gonçalves, Wallace; Mistro, Júlio César; Gallo, Paulo Boller; Guerreiro Filho, OliveiroThe cultivar IAC Catuaí SH3 was developed by the pedigree method, from the recombination of the coffee tree H 2077-2-5-46, of the Catuaí Vermelho germplasm, with accession IAC 1110-8, from the exotic cultivar BA10. Cultivar IAC Catuaí SH3 is high-yielding, resistant to coffee leaf rust and tolerant to drought.Item Ethiopian coffee germplasm is a valuable resistance gene pool to brazilian Pseudomonas syringae PVS garcae and tabaci(Editora UFLA, 2021) Rodrigues, Lucas Mateus Rivero; Destéfano, Suzete Aparecida Lanza; Beriam, Luís Otávio Saggion; Ferreiro-Tonin, Mariana; Braghini, Masako Toma; Guerreiro Filho, OliveiroSeven wild accessions of Coffea arabica from Ethiopia prospected by FAO Coffee Mission 1964-1965 were investigated concerning the resistance to 18 Brazilian strains and two Kenyan strains of Pseudomonas syringae pv. garcae and four P. syringae pv. tabaci strains, causal agents of bacterial halo blight and bacterial leaf spot, respectively. The cultivars of C. arabica IPR 102, resistant to the diseases, and Mundo Novo IAC 376-4, susceptible, were used as experimental controls. Our results indicated that the Ethiopian accessions presented high levels of resistance to all Brazilian strains of P. syringae pv. garcae but were susceptible to infection caused by Kenyan strains, which causes different levels of severity in wild accessions and experimental controls. Ethiopian accessions were also considered resistant to the four P. syringae pv. tabaci strains, with low susceptibility observed, one point on the severity scale, in access E-268 in response to a strain of the bacterium.Item IAC Obatã 4739 – dwarf arabic coffee cultivar with yellow fruits and resistant to leaf rust(Crop Breeding and Applied Biotechnology, 2018-07) Fazuoli, Luiz Carlos; Braghini, Masako Toma; Silvarolla, Maria Bernadete; Gonçalves, Wallace; Mistro, Júlio César; Gallo, Paulo Boller; Guerreiro Filho, OliveiroCultivar IAC Obatã 4739 was derived from a cross between coffee tree IAC 1669-20-1 and cultivar Catuaí Amarelo IAC 62. It is short and high-yielding, rust-resistant, has large and yellow fruits, medium to late maturation, excellent cup quality, and responds effectively to irrigation.Item IAC 125 RN – A dwarf coffee cultivar resistant to leaf rust and root-knot nematode(Crop Breeding and Applied Biotechnology, 2018-03) Fazuoli, Luiz Carlos; Braghini, Masako Toma; Braghini, Masako Toma; Silvarolla, Maria Bernadete; Gonçalves, Wallace; Mistro, Júlio César; Gallo, Paulo Boller; Guerreiro Filho, OliveiroIAC 125 RN was derived from a cross between the coffee cultivar Villa Sarchí and the Hibrido de Timor CIFC 832/2. The coffee trees are short and re- sistant to races 1 and 2 of the nematode Meloidogyne exigua and to all races of coffee rust, Hemileia vastatrix, present in Brazil. Brazil.Item Natural infection of several coffea species and hybrids and Psilanthus ebracteolatus by the coffee ringspot virus (CoRSV)(Escola Superior de Agricultura "Luiz de Queiroz", 2011-07) Kitajima, Elliot Watanabe; Chagas, César Martins; Braghini, Masako Toma; Fazuoli, Luiz Carlos; Fabris, Eliane Cristina Locali-; Salaroli, Renato BarbosaCoffee ringspot is a minor coffee disease caused by the nuclear type of Brevipalpus mite-transmitted virus, Coffee ringspot virus (CoRSV). Recently outbreaks of the disease in some growing regions of the state of Minas Gerais, Brazil, were registered with qualitative and quantitative yield losses. Coffea arabica was the only species registered as natural host. A survey was made on a germplasm collection of Coffea and related species kept at the Centro de Café “Alcides Carvalho”, Instituto Agronômico, Campinas, state of São Paulo (SP), Brazil, to assess natural susceptibility of Coffee species, other than C. arabica and some interspecific hybrids of Coffea as well as other non-Coffea plant species to the Coffee ringspot virus (CoRSV). The following plants were found with ringspot symptoms on their leaves and/or fruits besides C. arabica L.: C. kapakata (IAC 4511), C. dewevrei cv. Excelsa, C. canephora cv. Robusta, hybrid derivative of the C. arabica × C. racemosa (IAC1195-5-6-2), C. arabica × C. dewerei (Piatã IAC 387), Híbrido de Timor CIFC 832/1 (derivative from a natural crossing between C. arabica × C. canephora) and C. racemosa. Also Psilanthus ebracteolatus, a species close to the genus Coffee was also found with ringspot lesions on their leaves. All these plants were also found infested by Brevipalpus mites identified as B. phoenicis. Infection of these plants by CoRSV was confirmed by the observation of characteristic cytopathic effects in the tissues of the lesion and by RT-PCR using a pair of primer specific for CoRSV. Only with C. racemosa RT-PCR failed to amplify the CoRSV genome. The susceptibility of P. ebracteolatus to CoRSV adds new dimension regarding its controversial taxonomic position.Item Resistência de plantas de Coffea arabica, Coffea canephora e híbridos interespecíficos à cercosporiose(Instituto Agronômico (IAC), 2010-10) Patricio, Flávia Rodrigues Alves; Braghini, Masako Toma; Fazuoli, Luiz CarlosO presente estudo objetivou avaliar a resistência de plantas de Coffea arabica, C. canephora e de híbridos interespecíficos, à cercosporiose (Cercospora coffeicola), importante doença da cultura do cafeeiro. Foram realizados dois experimentos em 2003, em Campinas (SP), com mudas das cultivares de C. arabica, Mundo Novo IAC 388-17-1, Mundo Novo IAC 376-4, Bourbon Amarelo, Bourbon Vermelho, Obatã IAC 1669-20, Catuaí Vermelho IAC 144, Catuaí Amarelo IAC 62, Icatu Precoce IAC 3282, Icatu Vermelho IAC 4045, Ouro Verde IAC H5010-5 e Tupi IAC 1669-33; de C. canephora, Robusta IAC 1653-7 e Apoatã IAC 2258, além de dois híbridos interespecíficos Piatã IAC 387 e Híbrido de Timor IAC 1559-13. As mudas foram submetidas à inoculação com uma suspensão de conídios preparada com cinco isolados coletados em diferentes regiões do Estado de São Paulo. Os materiais mais suscetíveis foram Robusta IAC 1653-7, Apoatã IAC 2258, Híbrido de Timor IAC 1559-13, Bourbon Vermelho e Bourbon Amarelo com incidência entre 63,1% e 81,6% no primeiro experimento e entre 70% e 93,3% no segundo e severidade (notas 1-6) entre 2,92 e 3,42 no primeiro experimento e entre 3,64 e 2,79 no segundo. Os materiais mais resistentes foram Piatã IAC 387, Ouro Verde IAC H5010-5 e Tupi IAC 1669-33, com incidência entre 28,4% e 35,5% no primeiro experimento e 21,1% e 55,6% no segundo, e severidade entre 1,44 e 1,73 e entre 1,28 e 1,88, respectivamente, no primeiro e segundo experimentos.