Research Article

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05/04/2018
genetic breeding; Phaseolus vulgaris L; Productivity

The purpose of this research was to select the development of superior genotypes of snap beans adapted to edaphoclimatic conditions of the North and Northwest of Rio de Janeiro State, Brazil, applying the mixed model methodology. The test was installed and carried out in the experimental area of the Instituto Federal Fluminense (IFF), located in the municipality of ... more

D.P. Cruz; R. Moraes; L.M. Gravina; R.F. Daher; K. .C.Araújo; M. Vivas; C.Q. Silva; A.B.S. Gomes; T.R.A. Oliveira; G.A. Gravina; V.B. Silva
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Bean plant; genetic breeding; Molecular marker ISSR; Variability

The common bean (Phaseolus vulgaris) is a widespread crop in Brazil of dietary and economic importance, and it is cultivated primarily through family farming. Knowledge of genetic variability in landraces and improved bean cultivars is essential to explore the existing diversity, identify superior genotypes adapted to the climatic conditions of specific ... more

P.D.S. Cabral; L.C. de Souza; G.F. da Costa; F.H.L. Silva; T.C.B. Soares
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Gene action; General and specific combining ability; genetic breeding; Phaseolus vulgaris

The search for genetic material of snap beans with desirable yield traits is of utmost importance for yield increase in Brazil. We evaluated 12 snap bean genotypes by diallel crosses that presented characteristics of interest, so as to select the best genitors to generate productive populations in the snap bean breeding program of the Universidade Estadual do Norte ... more

A.B.S. Gomes; T.R.A. Oliveira; G.A. Gravina; D.P. Cruz; C.Q.S.S. Sant’Anna; R.F. Daher; L.C. Araújo; K.C. Araújo; G.H.F. Oliveira; R.S. Rocha; I.M. Pereira
08/22/2019
Data standardization; genetic breeding; Genetic diversity; Zea mays subsp. saccharata

Sweet corn (Zea mays subsp. saccharata) is considered a special vegetable of high nutritional value. One of the barriers encountered by breeders has been a lack of adequate genetic variability of sweet corn, coupled with a need for appropriate methodologies to evaluate the existing genetic diversity. Our objective was to determine the best method ... more

F.J. Carvalho; G.M. Maciel; O.J. Marques; I.G. da Silva; G.D. Braga; G.R. Marquez; A.C.S. Siquieroli; L.D.C. Neto
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genetic breeding; Passion fruit; Passion fruit woodiness disease; REML/BLUP; Resistance

The woodiness disease induced by the Cowpea aphid-borne mosaic virus (CABMV) is regarded as a limiting factor for passion fruit production. We estimated genetic parameters for resistance and agronomic performance-related traits and selected genotypes resistant to CABMV in segregating populations of passion fruit. The experiment was a randomized-block ... more

S.C. Preisigke; A.P. Viana; E.A. Santos; P.Rdos Santos; N.R. Cavalcante; M. Ambrósio; J.Cde O. Freitas; R. Rodrigues
05/31/2021
Coffee cultivars; genetic breeding; Genetic divergence; Germplasm evaluation; Molecular markers

Brazil is the world largest producer and exporter of Coffea arabica. In this country, numerous breeding programs have generated a great multiplicity of cultivars with expressive productivity that are adapted to the different regions. Evaluating genetic diversity is critical since it provides parameters for defining breeding strategies. We estimated the ... more

C.R. Macedo; S.M. de Godoy; E.A. Ruas; B.D. Góes; C.L. Chaves; C.F. Ruas; T. Sera; G.H. Sera; P.M. Ruas
09/28/2015
Genetic control; Phaseolus vulgaris L.; Plant architecture; Repeatability

Cultivars of common bean with more erect plant architecture and greater tolerance to degree of lodging are required by producers. Thus, to evaluate the potential of hypocotyl diameter (HD) in family selection for plant architecture improvement of common bean, the HDs of 32 F2 plants were measured in 3 distinct populations, and the characteristics related to plant architecture ... more

A.M.C. Oliveira; R.O. Batista; P.C.S. Carneiro; J.E.S. Carneiro; C.D. Cruz
07/03/2015
Gyr cattle; Oocyte donors; OPU-IVP; Phenotypic correlation; Repeatability

The growth of the Gyr breed in Brazil in terms of genetic gain for milk, along with conditions for market, has led to the use of ovum pick-up in vitro production (OPU-IVP) as a leader in biotechnology for the multiplication of genetic material. The aim of this study was to investigate phenotypic correlations between OPU-IVP-linked characteristics and pregnancy rates registered in ... more

W.H.O. Vega; C.R. Quirino; R.V. Serapião; C.S. Oliveira; A. Pacheco
08/19/2016
Experimental planning; Gossypium hirsutum L. r. latifolium Hutch.; Repeatability

With the changes in spinning technology, technological cotton traits, such as fiber length, fiber uniformity, fiber strength, fineness, fiber maturity, percentage of fibers, and short fiber index, are of great importance for selecting cotton genotypes. However, for accurate discrimination of genotypes, it is important that these traits are evaluated with the best possible accuracy. The ... more

L.P. Carvalho; F.J.C. Farias; C.L. Morello; J.I.S. Rodrigues; P.E. Teodoro; L.P. Carvalho; F.J.C. Farias; C.L. Morello; J.I.S. Rodrigues; P.E. Teodoro
10/30/2015
Characterization; cluster analysis; Dissimilarity; Saccharum spp

Genetic diversity among local accessions and varieties subsidize plant breeding programs, allowing the utilization of existing variability in plants that have already adapted to local climate conditions. An alternative to studying genetic variability is the study of diversity. The aim of this research was to study genetic diversity among sugarcane accessions and varieties used for the ... more

L.E.V. Cesar; A.T. Bruzi; J.A.R. Nunes; L.Ade B. Andrade; M.F. Lopes; L.R. Sales; M.M. Mourão

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