
Authors: W.N. Rodrigues, T.V. Colodetti, S.V.B. Brinate, L.D. Martins and M. A. Tomaz
The multi-stem aspect of crop systems using Coffea canephora makes it necessary to correctly establish the number of orthotropic stems per plant during the crop formation. The present study was developed to study the variability of responses among improved genotypes of C. canephora to the technique of bending orthotropic stems.. Read More»
Authors: C.M.S. Machado, N.S. Pimentel, A. Golynsk, A. Ferreira, H.D. Vieira and F.L. Partelli
For the selection of coffee plants that have favorable characteristics, it is necessary to evaluate variables related to production. Knowledge of the genetic divergence of arabica coffee is of extreme importance, as this knowledge can be associated with plant breeding programs in order to combine genetic divergence with good p.. Read More»
Authors: G.B. Bandil1, R.M. Etto2, C.W. Galv�£o2, H.J.O. Ramos3, E.M. Souza4, F.O. Pedrosa4, D.F.S. Chaves4, L.F. Huergo4 and R.A. Ayub1
Coffee is one of the most valuable agricultural commodities. There is much agronomic research on coffee, but molecular knowledge of its fruit development and ripening is limited... Read More»
Authors: S.M.B. Ca�§�£o T.F. Leite I.G.F. Budzinski T.B. dos Santos M.B.S. Scholz V. Carpentieri-Pipolo D.S. Domingues L.G.E. Vieira L.F.P. Pereira
Coffee quality is directly related to the harvest and post harvest conditions. Non-uniform maturation of coffee fruits, combined with inadequate harvest, negatively affects the final quality of the product. Pectin methylesterase (PME) plays an important role in fruit softening due to the hydrolysis of methylester groups in cell wall pectins. In order to c.. Read More»
Authors: W.N. Rodrigues, S.V.B. Brinate, L.D. Martins, T.V. Colodetti and M.A. Tomaz
The use of supplementary irrigation to sustain the plantation during moments of severe water stress or moments of high water demand is becoming almost a norm to keep sustainable crops, especially due to the climate changes and the high frequency in which climate extremes are occurring lately. The objective of this study was to.. Read More»
Authors: L.D. Martins, W.N. Rodrigues, L.S. Machado, S.V.B. Brinate, T.V. Colodetti, J.F.T. Amaral and M.A. Tomaz
The expansion of agriculture to new areas in order to increase the competitiveness of coffee producing countries has resulted in cultivation expanding into regions with lower natural fertility. This scenario has created the need to differentiate genotypes of Conilon coffee based on their tolerance to low levels of nutrients in the soil, especially phospho.. Read More»
Authors: M. Cristancho and C. Escobar
The aim of the present research was to test the transferability of simple sequence repeat (SSR) markers developed in two Uredinales species to Hemileia vastatrix, coffee rust. The development of efficient techniques for the identification of H. vastatrix isolates is imperative, given the continuous development of new races. The transferability of 25 SSR m.. Read More»
Authors: W.R. Gomes, W.P. Rodrigues, H.D. Vieira, M.G. Oliveira, J.R.M. Dias and F.L. Partelli
Diagnosing foliar nutritional status is essential for fertilizer recommendations and for the identification of nutrient imbalances. This study aimed to verify genetic diversity and establish mean standards (leaf nutrient contents; LNCs) and relationships among leaf nutrients (LNC relationships; LNCRs) in seven conilon coffee g.. Read More»
Authors: S.T. Ivamoto, D.S. Domingues, L.G.E. Vieira and L.F.P. Pereira
Cytochrome P450s (P450s) comprise a gene superfamily encoding enzymes that are involved in diverse plant metabolic pathways that produce primary and secondary metabolites such as phenylpropanoids, terpenoids, nitrogen-containing compounds, and plant hormones. They comprise one of the most diverse gene families in plant evolution. Although there are many s.. Read More»
Authors: W.P. Rodrigues, H.D. Vieira, D.H.S.G. Barbosa, G.R. Souza Filho and L.S. Candido
Biannuality in coffee culture causes temporal variability in plant productivity. Consequently, it is essential to evaluate genotypes during various crop years to ensure selection of productive and stable genotypes. We evaluated the effectiveness of simultaneous selection of coffee genotypes along harvests, based on productivity, stability, and adaptabilit.. Read More»