Research Article

Related GMR Articles

Bending; Multivariate Analysis; Coffee; Crop Management; Diversity; Orthotopic Stems

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. ... more

W.N. Rodrigues; T.V. Colodetti; S.V.B. Brinate; L.D. Martins; M.A. Tomaz
Coffee; Genotypes; Mineral nutrition; Multivariate analysis; Variability

Coffea canephora shows considerable variability for several agronomic traits, including nutritional efficiency. Beside the intrinsic nutritional efficiency of a genotype, the availability of water in the soil is another factor that can cause different responses, which suggests the possibility of selection of genotypes to enhance the nutritional efficiency ... more

L.C.T. Starling; L.D. Martins; W.N. Rodrigues; T.M. Reinicke; T.V. Colodetti; J.F.Tdo Amaral; F.L. Partelli; M.A. Tomaz; M.C. Espindula
common bean; Germplasm characterization; root system; Water deficit

The morpho-agronomic characterization of gene banks is a key step in enabling breeding programs to efficiently exploit genetic resources. Several studies have evaluated the root system traits of the common bean to develop genotypes better adapted to drought. We examined the root systems of 1000 common bean accessions, from the Agronomic Institute of Campinas gene ... more

A. .Teixeira; D.A. da Silva; J.G.R. Gonçalves; J.A.F. Esteves; S.A.M. Carbonell; A.F. Chiorato
Coffee; Growth; Immature fruit; Proteome

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. This study reports a comparative proteomic investigation of immature coffee fruits in two early developmental stages: stage 1, cell division and elongation of the perisperm; and stage 2, early growth of the ... more

G.B. Bandil; R.M. Etto; C.W. Galvão; H.J.O. Ramos; E.M. Souza; F.O. Pedrosa; D.F.S. Chaves; L.F. Huergo; R.A. Ayub
Coffee; Genetic value; Harvests

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 adaptability, via mixed models, for ... more

W.P. Rodrigues; H.D. Vieira; D.H.S.G. Barbosa; G.R.Souza Filho; L.S. Candido
Coffee; Gene expression; Maturation; PME; Quality

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 characterize the changes occurring ... more

S.M.B. Cação; T.F. Leite; I.G.F. Budzinski; T.Bdos Santos; M.B.S. Scholz; V. Carpentieri-Pipolo; D.S. Domingues; L.G.E. Vieira; L.F.P. Pereira
Candidate genes; Coffee; Cytochrome P450; Expressed sequence tags (ESTs); Transcriptome

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 studies that aim to characterize ... more

S.T. Ivamoto; D.S. Domingues; L.G.E. Vieira; L.F.P. Pereira
Coffee; Genotypes; Growth variables; Programed cycle pruning

The objective of this study was to investigate, using path analysis, the genotypic correlations of primary and secondary production components as well as their decomposition into direct and indirect effects on the yield of coffee crops subjected to programed cycle pruning (PCP). Twenty-two Conilon coffe genotypes belonging to the breeding program developed by ... more

H.D. Vieira; A. Ferreira; F.L. Partelli; A.P. Viana
Brazilian rice cultivars; differential gene expression; Functional annotation; Water deficit

Gene expression related to drought response in the leaf tissues of two Brazilian upland cultivars, the drought-tolerant Douradão and the drought-sensitive Primavera, was analyzed. RNA-seq identified 27,618 transcripts in the Douradão cultivar, with 24,090 (87.2%) homologous to the rice database, and 27,221 transcripts in the Primavera cultivar, with 23,663 (86.9%) homologous to the rice ... more

R.D.D. Silveira; F.R.M. Abreu; S. Mamidi; P.E. McClean; R.P. Vianello; A.C. Lanna; N.P. Carneiro; C. Brondani
Conilon coffee; Fertilization; Mineral nutrition

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 phosphorus, which imposes high ... more

L.D. Martins; W.N. Rodrigues; L.S. Machado; S.V.B. Brinate; T.V. Colodetti; J.F.T. Amaral; M.A. Tomaz