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

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Biofortification; Diallel; Phaseolus vulgaris; Plant breeding

The objectives of this study were to select promising common bean populations for high iron and zinc contents (FeC and ZnC), seed yield and 100-seed weight, to study the genetic control of these traits and to select parents for high FeC and ZnC based on a diallele analysis. Fifteen populations were obtained from crosses among six parents selected for high FeC and ... more

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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
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DNA, Plant; Edible Grain; Genetic variation; Hordeum; Minerals; Plant breeding; Quantitative trait loci; Selection, Genetic

Mineral elements in barley (Hordeum vulgare) play an important physiological role in global human health. In this study, quantitative trait loci (QTLs) for concentration of nine mineral elements in barley grain and grass powder were detected in a population of 193 recombinant inbred lines of the barley cross Ziguangmangluoerling x Schooner and the parents. We observed large genetic variation ... more

Y.W. Zeng; J. Du; X.M. Yang; X.Y. Pu; L.X. Wang; J.Z. Yang; L.J. Du; T. Yang; S.M. Yang; Z.H. Sun
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cluster analysis; Conservation of Natural Resources; DNA, Plant; Genetic markers; Genetic variation; Genetics, Population; Microsatellite Repeats; Myrtaceae; Phylogeny; Plant breeding

Myrcia lundiana Kiaersk. is a tree of the family Myrtaceae found in tropical and subtropical areas of the southern hemisphere that produces essential oil. The aim of this study was to characterize the genetic diversity of M. lundiana plants from a native population of Parque Nacional de Itabaiana, using inter-simple sequence repeat molecular markers. Thirty-five primers were tested, 20 of ... more

M.F. Alves; D.A.C. Nizio; F.A. Brito; T.S. Sampaio; A.V.C. Silva; M.F. Arrigoni-Blank; S.V.A. Carvalho; A.F. Blank
2016 Dec 19
China; Chromosomes, Plant; Cotton Fiber; Genotype; Gossypium; Plant breeding; Polymorphism, Genetic; Quantitative trait loci

Upland cotton (Gossypium hirsutum L.) is an important cash crop that provides renewable natural fiber worldwide. Currently limited genetic base leads to a decrease in upland cotton genetic diversity. Multi-parent advance generation inter-cross (MAGIC) populations can be used to evaluate complex agronomic traits in crops. In this study, we developed an upland cotton MAGIC population. A total of ... more

D.G. Li; Z.X. Li; J.S. Hu; Z.X. Lin; X.F. Li
2016 Dec 19
Chromosome Mapping; Chromosomes, Plant; Computer simulation; Epistasis, Genetic; Inbreeding; Models, Genetic; Plant breeding; Plants; Quantitative trait loci; Sample Size; Selection, Genetic

The accuracy of quantitative trait loci (QTLs) identified using different sample sizes and marker densities was evaluated in different genetic models. Model I assumed one additive QTL; Model II assumed three additive QTLs plus one pair of epistatic QTLs; and Model III assumed two additive QTLs with opposite genetic effects plus two pairs of epistatic QTLs. Recombinant inbred lines (RILs) (50- ... more

C.F. Su; W. Wang; S.L. Gong; J.H. Zuo; S.J. Li
2016 Dec 19
Plant breeding; Quantitative trait loci; Quantitative Trait, Heritable; Selection, Genetic; Zea mays

A challenge faced by popcorn breeding programs is the existence of a negative correlation between the two main traits, popping expansion and yield, which hinders simultaneous gains. The objective of this study was to investigate the use of a new variable or super trait, which favors the reliable selection of superior progenies. The super trait 'expanded popcorn volume per hectare' was ... more

A.T. do Amara Junior; D. Santos; I.F.S. Gerhardt; R.N.F. Kurosawa; N.F. Moreira; M.G. Pereira; deA. Gravina; F.H. de L. Silva
2016 Dec 19
Avena; Brazil; Disease resistance; Edible Grain; Fungicides, Industrial; Plant breeding; Quantitative trait loci; Selection, Genetic

The State of Rio Grande do Sul (RS) is the largest producer of oat in Brazil with the aid of consolidated breeding programs, which are constantly releasing new cultivars. The main objectives of this study were to: 1) evaluate the annual genetic progress in grain yield and hectoliter weight of the oat cultivars in RS, with and without fungicide use on aerial parts of plants; and 2) evaluate the ... more

D.N. Follmann; C. Filho; A.D. Lúcio; V.Q. de Souza; M. Caraffa; C.A. Wartha

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