6 documents found, page 1 of 1
Phenotypic characterization of Coffea arabica genotypes in infested area by nem...
Carvalho, Alex Mendonça; Salgado, Sonia Lima; Mendes, Antonio Nazareno; Pereira, Antonio Alves; Botelho, Cesar Elias; Tassone, Guilherme AugustoThe Meloidogyne paranaensis causes serious damage to the root system of coffee; it could cause poor vegetative and reproductive development culminating in the death of plants. This trial was carried out aimed to evaluate, in naturally infested by M. paranaensis, vegetative growth, production in the first two years (2011/2012) and the population of the M. paranaensis in genotypes (GEN) Timor Hybrid UFV 408-01 pl...
Progenies selection F4 from icatu and catuaí amarelo crossing with resistance t...
Cardoso, Diego Abreu; Mendes, Antonio Nazareno; Carvalho, Alex Mendonça; Lima, Amador Eduardo; Botelho, Cesar Elias; Carvalho, Gladyston RodriguesWe aimed at evaluate and select coffee tree progenies in F4 generation in order to obtain rust resistant cultivars and agronomic characteristics superior to traditional cultivars. This research was carried out with 33 progenies resulted from crossing of Icatu cultivars and Catuaí Amarelo IAC 62, IAC 17 and the progenies IAC 5002 and IAC 5010; and three susceptible controls. The experimental design used was a ra...
Behavior of coffee cultivars under the incidence of diseases of rust and gray l...
Carvalho, Alex Mendonça; Cardoso, Diego Abreu; Carvalho, Gladyston Rodrigues; Carvalho, Vicente Luiz; Pereira, Antonio AlvesOrange rust, caused by Hemileia vastatrix, is the main coffee disease in terms of scope and damage. The development of cultivars, resistant and/or tolerant to pests and diseases, has an important role in the productivity increase and production cost decrease. Thus, the aim of this study was to provide information about the reaction of ten commercial cultivars of C. Arabica to the incidence of rust and gray leaf...
Adaptability and phenotypic stability of F4 progenies of Coffea arabica l.
Dias, Rodrigo Batista; Carvalho, Gladyston Rodrigues; Botelho, Cesar Elias; Carvalho, Alex Mendonça; Carvalho, João Paulo Felicori; Cardoso, Diego AbreuThe search for new genotypes with broad stability and adaptability, allied to good agronomic traits has been the main focus of coffee breeding programs in Brazil. With this work, we aimed at selecting C. arabica progenies, related to phenotypic adaptability and stability, to identify the genotypes with best behavior concerning environmental changes. The trial was installed in January of 2007, in the Experimenta...
Initial growth of coffee tree cultivars with different doses of nitrogen, phosp...
Vilela, Diego Júnior; Carvalho, Gladyston Rodrigues; Botelho, Cesar Elias; Carvalho, Alex Mendonça; Praxedes, Marina Angélico; Santos, Milena ChristyThe mineral nutrition of the coffee tree is very important for its yield, and several places that previously were considered unfit for the cultivation, today exhibit highly productive crops, where soil fertility correction, over time, combined with proper mineral nutrition, are some of the main factors for this success. The aim of this research was to evaluate four new coffee cultivars at initial growth under d...
Selection of coffee progenies of catucaí group
Carvalho, Alex Mendonça; Mendes, Antonio Nazareno; Rezende, Fernando Valaci; Botelho, Cesar Elias; Carvalho, Gladyston RodriguesThe coffee tree genetic improvement has brought expressive profit to the activity through the use of cultivars with high productivity and favorable agronomic traits. The aim of the improvement programs is gatheningthe best characters in a cultivar. So it searched to select the coffee tree progenies for favorable characteristics of productivity, grains size, vegetative force, resistance to rust and cercospora le...