Research Article

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Common beans are a key source of protein and are consumed daily by most of the Brazilian population. More than 70% of what is consumed in this country is classified as carioca beans, based on seed qualities and appearance. We evaluated progenies of carioca common beans of the Brazilian agriculture research agency (Embrapa) recurrent selection program. This ... more

L.C. Melo; A.C.F. Silva; H.S. Pereira; P.G.S. Melo; T.L.P.O. Souza
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Genetic diversity; Genomic library; Molecular markers; Neutral markers; SSR

Microsatellite markers, also known as single sequence repeats (SSRs), are highly polymorphic, fast evolving, and regarded as neutral markers. Due to these traits, they have been widely used in population studies. The development of SSRs for a given species opens possibilities for their application in population studies of other species that are phylogenetically ... more

B.E. Roman; B.M. Trava; L. Madi-Ravazzi
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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
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Bos indicus; Dairy cattle; Molecular markers; PCR-RFLP; QTL

Research on genes affecting phenotypic variation in milk production and composition from indicine (Bos indicus) cattle is imperative, since these breeds are important tropical genetic resources, and there have been few studies investigating the genetic basis of these traits. We identified polymorphisms in k-casein (CSN3), b-lactoglobulin (LGB ... more

R.S. Steinberg; M.R.S. Carvalho; I.C. Rosse; M.A. Machado; M.G.C.D. Peixoto
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Kunitz trypsin inhibitor (KTI), which affects protein digestibility and lipoxygenase isozymes, responsible for the off-flavor associated with soy-based foods, are two undesirable factors present in soybean seeds. These unpleasant factors are usually inactivated by heat treatment. However, heat treatment does not completely eliminate these factors; in addition it ... more

D.A. da Silva; V. Carpentieri-Pipolo; T. Barreto; R.V. Abdelnoor; S.R.R. Marin; M.C. Carrão-Panizzi
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Abiotic stress; Cold; MYB; Rice; Transcription factor

The MYB-domain proteins exist universally across diverse organisms and regulate numerous processes during the plant life cycle. In the present research, a full-length MYB gene OsMYB511 was identified from rice seedlings through microarray data. Induction of OsMYB511 by cold stress was dramatic in japonica cultivar Jiucaiqing as compared to indica IR26. ... more

P. Huang; H. Chen; R. Mu; X. Yuan; H.S. Zhang; J. Huang
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Interaction; Nitrogen resource; Rice; Rice blast fungus; Small secreted proteins

Previous studies have shown that the blast fungus, Magnaporthe oryzae, may experience nitrogen starvation during infection of its plant host (rice,Oryza sativa). Here, we studied the expression of seven genes encoding cysteine-rich proteins with N-terminal signal peptides during nitrogen limitation and throughout the infection process. Some genes were upregulated to a greater ... more

J. Yang; M.L. Liang; J.L. Yan; Y.Q. Yang; L. Liu; C. Liu; L.J. Yang; C.Y. Li
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Phosphoenolpyruvate carboxylase gene; Photosynthetic enzyme activity; Rice

The morphology and photosynthetic enzyme activity were studied in maize phosphoenolpyruvate carboxylase transgenic rice and non-transgenic rice. The results showed that compared with non-transgenic rice, phosphoenolpyruvate carboxylase transgenic rice was taller and had a stronger stalk, wider leaves, and more exuberant root system, with increased photosynthetic enzyme activity and improved ... more

W.C. Li; J. Wang; Y.L. Sun; S.D. Ji; S.W. Guo
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HL-CMS; Rice; VDAC

The voltage-dependent anion channel (VDAC), also known as a mitochondrial porin, plays an important role in the regulation of metabolic and energetic functions of mitochondria, as well as in mitochondria-mediated apoptosis. Cytoplasmic male sterility (CMS) is of major economic importance for commercial hybrid production and a research model for the interaction be­tween nuclear and cytoplasmic ... more

X. Xu; Y.P. Tan; G. Cheng; X.Q. Liu; C.J. Xia; F.Y. Luo; C.T. Wang
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Breeding by design; Chalkiness; Molecular marker; QTLs; Rice; Target genotype variety

The aim of this study was to breed a target genotype variety based on the identified chalkiness marker-QTL (quantitative trait locus) associations in rice. First, a permanent mapping population of rice that consisted of 525 recombinant inbred lines (RILs), which were derived from Zhenshan 97/Minghui 63, was used to identify QTLs with additive effects for rice quantitative traits and ... more

X. Liu; Y.R. Du; X.H. Li; X.L. Li; W.Q. Yang; Y. Wang

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