Crop Breeding and Applied Biotechnology
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Item Selection for frost resistance in Coffea arabica progenies carrying C. liberica var. dewevrei genes(Crop Breeding and Applied Biotechnology, 2005) Petek, Marcos Rafael; Sera, Tumoru; Alteia, Marcos ZorzenonThis research was carried out to estimate the variability and genetic parameters for the development of cultivars more frost resistant in Coffea arabica progenies, carrying C. liberica var. dewevrei genes. There is genetic variability for frost resistance in progenies with C. liberica var. dewevrei genes. The rust resistance, vegetative vigor and yield potential should be considered when developing cultivars adapted to frost occurrence areas. Cultivars with yield precocity such as IAPAR 59, that allows a faster recovery yield after a severe frost, minimizing the damage from the phenomenon. The use of index selection is efficient to select simultaneously progenies with greater frost adaptation, vegetative vigor, rust resistance and yield.Item Resistance to bacterial halo blight in Arabica coffee lines derivative from the genotype C1195-5-6-2 under natural infection conditions(Crop Breeding and Applied Biotechnology, 2018) Andreazi, Elder; Sera, Gustavo Hiroshi; Sera, Tumoru; Fonseca, Inês Cristina de Batista; Shigueoka, Luciana Harumi; Santos, Willian Gabriel dos; Pereira, Carlos Theodoro MottaThe aim of this study was to identify resistance to bacterial halo blight in Arabica coffee lines carrying Coffea racemosa genes. Eighteen Arabica coffee lines derivative from the genotype C1195-5-6-2, and the cultivars IAPAR 59 and IPR 99 were evaluated for resistance to bacterial halo blight in two trials carried out in field conditions, in Londrina, PR, Brazil. The cultivars Mundo Novo IAC 376-4 and Catuaí Vermelho IAC 81 were included as susceptible controls. Ten lines and the cultivar IAPAR 59 showed resistance to bacterial halo blight. The cultivar IPR 99 presented intermediate reaction, and the controls were very susceptible. This is the first study to show that lines derivative from the genotype C1195-5-6-2, which has C. racemosa genes, could be a source of resistance to bacterial halo blight in coffee breeding programs.Item Grafted young coffee tree growth in a greenhouse(Crop Breeding and Applied Biotechnology, 2002) Sakiyama, Ney Sussumu; Tomaz, Marcelo Antonio; Martinez, Hermínia Emília Pietro; Pereira, Antonio Alves; Zambolim, Laércio; Cruz, Cosme DamiãoGrafted young coffee trees were observed in a greenhouse to study the effect of different scions and rootstocks on plant growth. Four Coffea arabica L. genotypes were used as scions: the cultivars Catuaí Vermelho IAC 15 and Oeiras MG 6851, and the progenies H 419-10-3-1-5 and H 514-5-5-3. They were also used as nongrafted control plants. Four genotypes were used as rootstocks: ‘Apoatã IAC 2258’ (C. canephora), ‘Conillon’ (C. canephora), ‘Emcapa 8141’ (C. canephora), and ‘Mundo Novo IAC 376-4’ (C. arabica). ‘Mundo Novo IAC 376-4’ and ‘Apoatã IAC 2258’ were classified as good rootstocks, while ‘Oeiras MG 6851’ and “H 419- 10-3-1-5” performed well as non-grafted plants. The diallel analysis statistical model was efficient to evaluate the general combination ability of the rootstocks and, therefore, recommended for rootstock selection procedures in breeding programs.Item Resistance to bacterial halo blight in Arabica coffee lines derivative from the genotype C1195-5-6-2 under natural infection conditions(Crop Breeding and Applied Biotechnology, 2018-01) Andreazi, Elder; Sera, Gustavo Hiroshi; Sera, Tumoru; Fonseca, Inês Cristina de Batista; Carducci, Fernando Cesar; Shigueoka, Luciana Harumi; Santos, Willian Gabriel dosThe aim of this study was to identify resistance to bacterial halo blight in Arabica coffee lines carrying Coffea racemosa genes. Eighteen Arabica coffee lines derivative from the genotype C1195-5-6-2, and the cultivars IAPAR 59 and IPR 99 were evaluated for resistance to bacterial halo blight in two trials carried out in field conditions, in Londrina, PR, Brazil. The cultivars Mundo Novo IAC 376-4 and Catuaí Vermelho IAC 81 were included as susceptible controls. Ten lines and the cultivar IAPAR 59 showed resistance to bacterial halo blight. The cultivar IPR 99 presented intermediate reaction, and the controls were very susceptible. This is the first study to show that lines derivative from the genotype C1195-5-6-2, which has C. racemosa genes, could be a source of resistance to bacterial halo blight in coffee breeding programs.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 Selection of coffee progenies for resistance to nematode Meloidogyne paranaensis in infested area(Crop Breeding and Applied Biotechnology, 2014-06) Salgado, Sonia Maria Lima; Rezende, Juliana Costa de; Nunes, José Airton RodriguesThe purpose of this study was to select Coffea arabica progenies for resistance to M. paranaensis in an infested coffee growing area using Henderson’s mixed model methodology. Forty-one genotypes were selected at the Coffee Active Germplasm Bank of Minas Gerais, and evaluated in regard to stem diameter, number of plagiotropic branches, reaction to the nematode, and yield per plant. There was genetic variability among the genotypes studied for all the traits evaluated, and among the populations studied for yield and reaction to the nematode, indicating possibilities for obtaining genetic gains through selection in this population. There was high rate of genotypic association between all the traits studied. Coffee plants of Timor Hybrid UFV408-01 population, and F 3 progenies derived from crossing Catuaí Vermelho and Amphillo MR 2161 were the most promising in the area infested by M. paranaensis.Item Triple plagiotropic branch in coffee: a new promising mutant?(Crop Breeding and Applied Biotechnology, 2017-10) Sakiyama, Ney Sussumu; Picoli, Edgard Augusto de Toledo; Oliveira, Antonio Carlos Baião de; Caixeta, Eveline Teixeira; Zambolim, Laércio; Martinez, Hermínia Emília Prieto; Pereira, Antonio AlvesCoffee tree is a shrub with dimorphic branches. The orthotropic stem grows vertically with two near-horizontal plagiotropic branches, per node, in opposite phyllotaxy. The consecutive nodes of the orthotropic stem are organ- ized in parastichies. We report here mutant plants of Coffea arabica with triple plagiotropic branch, resulted from the whorled phyllotaxy of the orthotropic stem. In mutant plants three plagiotropic branches in the same node are sepa- rated by angles of approximately 120 o , while in normal plants two plagiotropic branches in the same node are separated by angles of approximately 180 o . In mutant plants the angles of the parastichies increase approximately 50 o clock- wise between consecutive nodes, while in normal plants the angles increase approximately 87 o . The plant architecture is changed. The triple plagiotropic branch is a putative mutant with potential to be explored in coffee breeding programs. The hypotheses for the origin of the mutation and the research perspectives are discussed.Item IPR 107 – Dwarf arabic coffee cultivar with resistance to coffee leaf rust(Crop Breeding and Applied Biotechnology, 2013-10) Sera, Tumoru; Sera, Gustavo Hiroshi‘IPR 107’ was derived from a cross between ‘IAPAR 59’ and ‘Mundo Novo IAC 376-4’. ‘IPR 107’ is a dwarf medium size plant with medium precocity in ripening and with complete resistance to rust races in this time. This cultivar presents superior quality and high yield in many coffee regions.Item IPR 103 – Rustic dwarf arabic coffee cultivar more adapted to hot regions and poor soils(Crop Breeding and Applied Biotechnology, 2013-03) Sera, Tumoru; Sera, Gustavo Hiroshi; Fazuoli, Luiz Carlos‘IPR 103’ was derived from a cross between “Catuaí” and “Icatu”. ‘IPR 103’ is a medium size dwarf cultivar with high rusticity, partially resistant to coffee leaf rust with late ripening. This cultivar is more adapted to hot regions and poor soils. It presents partial resistance to necrosis and mummification of young fruits on field conditions. Key words: Breeding, Coffea arabica, partial rust resistance.Item IPR 102 – Dwarf Arabica coffee cultivar with resistance to bacterial halo blight(Crop Breeding and Applied Biotechnology, 2017-08) Sera, Gustavo Hiroshi; Sera, Tumoru; Fazuoli, Luiz CarlosIPR 102’ is a coffee cultivar derivative from a cross between “Catuaí” and “Icatu”. ‘IPR 102’ is a dwarf cultivar (medium size) with high rusticity, late ripening cycle, and it is resistant to bacterial halo blight and partial resistant to coffee leaf rust.