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Breeding potential and genetic diversity of "Híbrido do Timor" coffee evaluated...
Setotaw, Tesfahun Alemu; Caixeta, Eveline Teixeira; Pena, Guilherme Ferreira; Zambolim, Eunize Maciel; Pereira, Antonio Alves; Sakiyama, Ney SussumuMarcadores moleculares AFLP, RAPD e SSR foram usados para estudo da diversidade e estrutura genética do germoplasma de Híbrido de Timor. As análises de coordenadas principais, de agrupamento UPGMA baseado na dissimilaridade genética de Jaccard, de agrupamento baseado no modelo Bayesiano, a percentagem de locos polimórficos, o índice de Shannon e a diversidade genética de Nei foram utilizadas para acessar a dive...
Simulating stress condition through compaction in banana plant cultivated In vitro
Almeida, Mirielle de Oliveira; Pio, Leila Aparecida Salles; Santos, Dalilhia Nazaré dos; Pasqual, Moacir; Luz, José Magno QueirozBanana cultivation is an agricultural activity practiced in different regions and constantly subjected to abiotic stresses that limit its productivity. To treat the effect of these stresses research can be undertake by simulating them in vitro since it limit the effect of the external factor in the experiment. Therefore, the objective of this study was to simulate the compaction in banana plant cultivated in vi...
Effect of modifying concentrations of calcium and magnesium on in vitro develop...
Rodrigues, Filipe Almendagna; Rezende, Renata Alves Lara; Soares, Joyce Dória Rodrigues; Brant, Luciana Alves Caldeira; Setotaw, Tesfahun AlemuResearch suggests that the development of micropropagated banana plants can be improved by altering nutrient concentrations in the culture medium. The aim of this study was to evaluate the in vitro development of banana plants exposed to varying concentrations of calcium and magnesium sulfate. The shoot tips of banana cv. Prata-Anã were inoculated in flasks (volume, 250 cm3) containing 50 mL of MS culture mediu...
Impacts of water deficit in ecophysiological and spectral responses of coffee i...
Silveira, Helbert Rezende de Oliveira; Santos, Meline Oliveira; Silva, Vânia Aparecida; Venturin, Regis Pereira; Volpato, Margarete Marin LordeloThe aim of this study was to evaluate the effect of water stress in spectral and ecophysiological responses of coffee trees intercropped with woody species under water deficit. The “Catuaí Vermelho 99” was planted in monoculture and associated with the tree mahogany, teak and acrocarpo distributed in two spacings (9 x 13.6 and 18 x 13.6 m) line of coffee. Evaluations of growth of tree and coffee were performed ...
Genetic diversity and genome introgression in coffee
Setotaw, Tesfahun AlemuConselho Nacional de Desenvolvimento Científico e Tecnológico; Para estudar a diversidade genética e o padrão de melhoramento entre cultivares de C. arabica lançados entre 1939 e 2009, foi utilizado um total de 110 cultivares. A fim de avaliar a introgressão do genoma do Híbrido de Timor e sua relação com outras espécies de café, foram utilizados cinco acessos de C. arabica, dez de C. canephora var conilon, qui...