Research Article

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Colletotrichum lindemuthianum; Molecular markers; Parent selection; Phaseolus vulgaris; Plant breeding

The main goal of this work was to select resistance sources to common bean anthracnose by field phenotyping and DNA marker-assisted screening. Fifty-five common bean genotypes, including differential varieties, characterized resistance sources, elite lines, cultivars and controls, were evaluated in a field inoculation trial and screened with SCAR markers linked to ... more

A.F. Vieira; L.C.S. Almeida; L.A. Rodrigues; J.G.C. Costa; L.C. Melo; H.S. Pereira; D.A. Sanglard; T.L.P.O. Souza
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diallel analysis; Genetic effects; Phaseolus vulgaris; Plant breeding

We examined the general and specific combining abilities of common bean cultivars and varieties and tested promising hybrid combinations for the development of productive strains. Two cultivars (IPR Uirapuru and IPR Campos Gerais) and five local varieties (BGU-1, BGU-7, BGU-13, BGU-25 and BGU-36) were planted in a full diallel cross. Treatments were assessed based ... more

V.P. da Silva; M.A.A. Barelli; J.P.E. Lira; M.J. Arruda; J.P. Poletine; L.G. Neves
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Abiotic stress; Drought tolerance; Plant breeding; Sorghum bicolor

Drought stress is a serious obstacle for crop production, especially in arid and semi-arid areas of the world. Sorghum is a useful crop to grow in areas with erratic, poorly distributed or inadequate rainfall. To help determine the best alternatives, we evaluated 30 sorghum cultivars with and without water stress in the post-flowering plant stage. The work was ... more

P.S.C. Batista; A.J. Carvalho; A.F. Portugal; E.A. Bastos; M.J. Cardoso; L.G. Torres; M.P.Mingote Júlio; C.B. de Menezes
04/30/2019
Coffea arabica; Genetic variability; Nutritional efficiency; Plant breeding

Extensive use of nitrogen fertilizers in coffee crops increases production costs and environmental pollution. Developing cultivars more efficient in nitrogen (N) utilization could contribute to reduce the need for N fertilization and promote sustainable production. We evaluated the variation in production characteristics among 20 coffee cultivars grown in nutrient ... more

W.M. Moura; P.M.R. Cardoso; G.A. Gravina; V.S. Cavalcante; A.W. Pedrosa; T.C. Ferreira
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Berries; Heritability; Plant breeding; RELM/BLUP; Rubus idaeus; Small fruits

Raspberry is a berry crop of great economic importance, and its cultivation has expanded worldwide. Information on the genetic parameters of raspberry for use in breeding programs is currently limited. We used Restricted Maximum Likelihood (REML) and Best Linear Unbiased Prediction (BLUP) to estimate variance components and predict genetic parameters for ... more

P.M. Marchi; I.R. Carvalho; D. Höhn; B. Carra; V.J. Szareski; M. Dini; M. Vizzotto; L.E.C. Antunes
06/30/2019
Genetic divergence; Phaseolus vulgaris; Plant breeding

The common bean is widely distributed throughout Brazil and within Mato Grosso state. It has wide genetic variability and adaptability to various environmental conditions. We evaluated the genetic divergence and agronomic performance of common bean genotypes in order to initiate a bean breeding program in the region of Cáceres, MT. We included 58 genotypes (40 ... more

P.R.Jdos Santos; M.A.A. Barelli; R. Felipin-Azevedo; V.P. da Silva; T.A.S. Gilio; T.C. de Oliveira; D.L. Gonçalves; J.P. Poletine
08/31/2019
Glycine max; Horizontal resistance; Microsatellite markers; Phakopsora pachyrhizi; Plant breeding; Quantitative trait loci

Soybean rust is considered a highly aggressive disease in soybean crops. Most research has focused on obtaining resistant genotypes based on dominant or recessive alleles, which provide vertical resistance. The identification of promising crosses that may be used to develop genotypes with horizontal resistance from IAC 100 may help to increase the longevity of the ... more

F.C. Juliatti; K.R.C. Santos; T.P. Morais; B.C.M. Juliatti
09/25/2019
Glycine max; Grain yield; Path analysis; Plant breeding

An option into guide selection strategies in soybean breeding programs is to investigate associations between the main traits studied by breeders. A question that is faced is the possible influence of genotype x environment (GE) interactions on correlations among traits. Path analysis allows, in addition to measuring correlation, a more detailed study of cause / ... more

D.R. Pereira; A.T. Bruzi; J.A.R. Nunes; J.P.S. Carvalho; E.V. Zambiazzi; G.S. Gesteira
10/30/2015
Conservation; Hybridization; SSR molecular marker; Wild cotton

Cotton has been collected in Brazil for decades for its conservation, evaluation, and the use of its genetic resources. Gossypium mustelinum is an allotetraploid cotton species that only occurs in Brazil, and little is known about its genetic potential for improvement. However, the species is threatened by habitat fragmentation and interspecific hybridization with exotic species of ... more

I.P.P. de Menezes; J.O. da Silva; G. Malafaia; R.D.D. Silveira; P.A.V. Barroso
04/04/2016
Corn earworm; Helicoverpa; Hybridization; Invasive species; Microsatellite; Old World bollworm

The Old World bollworm Helicoverpa armigera (Hübner) was recently discovered in Brazil. This species is closely related to the New World bollworm H. zea (Boddie), and mating between these species has already been reported under laboratory conditions. Here, we tested the cross-species amplification of 20 microsatellite (SSR) loci in field populations of H. armigera ... more

N.A. Leite; A.S. Corrêa; A. Alves-Pereira; J.B. Campos; M.I. Zucchi; C. Omoto; N.A. Leite; A.S. Corrêa; A. Alves-Pereira; J.B. Campos; M.I. Zucchi; C. Omoto; N.A. Leite; A.S. Corrêa; A. Alves-Pereira; J.B. Campos; M.I. Zucchi; C. Omoto

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