Research Article

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Acclimatization; Cold-Shock Response; Flowers; Genes, Essential; Genes, Plant; Genetic markers; Genotype; Genotyping Techniques; Plant breeding; Polymerase chain reaction; Prunus persica; Reference Standards

Selecting and validating reference genes are the first steps in studying gene expression by reverse transcriptase-quantitative polymerase chain reaction (RT-qPCR). The present study aimed to evaluate the stability of five reference genes for the purpose of normalization when studying gene expression in various cultivars of Prunus persica with different chilling requirements. Flower bud tissues ... more

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Alleles; Brazil; Fruit; Genetic markers; Genetic variation; Microsatellite Repeats; Myrtaceae; Phylogeny; Plant breeding; Polymorphism, Genetic; Trees; Vitamin A

Myrciaria dubia (camu-camu) is an Amazon tree that produces a tart fruit with high vitamin C content. It is probably the fruit with the highest vitamin C content among all Brazilian fruit crops and it can be used to supplement daily vitamin C dose. This property has attracted the attention of consumers and, consequently, encouraged fruit farmers to produce it. In order to identify and select ... more

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Alleles; Crops, Agricultural; Gene frequency; Genetic markers; Genetic variation; Genotype; Microsatellite Repeats; Phylogeny; Plant breeding; Polymorphism, Genetic; Random Amplified Polymorphic DNA Technique; Zea mays

Genetic diversity in crops is essential to make improvements related to superior germplasms. Implementation of molecular markers to identify suitable genotypes speeds up the breeding progress by enhancing selection efficiency. This study was carried out to probe genetic diversity among 21 maize genotypes using 20 inter simple sequence repeat (ISSR) markers. We identified a total of 190 ... more

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Dracontomelon duperreanum, the most representative species of the family Anacardiaceae, is an important multipurpose tree in China and Vietnam. However, no genetic diversity studies have been reported on this species. In this study, we identified 11 microsatellite markers for D. duperreanum by using the restriction-site-associated DNA sequencing (RAD-seq) method and examined their ... more

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Agriculture; Brazil; Edible Grain; Genetic variation; Plant breeding; Triticum

The State of Rio Grande do Sul (RS) stands out as the largest wheat producer in Brazil. Wheat is the most emphasized winter cereal in RS, attracting public and private investments directed to wheat genetic breeding. The study of genetic progress should be performed routinely at breeding programs to study the behavior of cultivars developed for homogeneous regions of cultivation. The objectives ... more

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Brazil; Flour; Food Industry; Glutens; Plant breeding; Protein Subunits; Triticum

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Alleles; Biofuels; Crosses, Genetic; Genotype; Jatropha; Multivariate analysis; Phenotype; Plant breeding; Plant Oils

Jatropha is research target worldwide aimed at large-scale oil production for biodiesel and bio-kerosene. Its production potential is among 1200 and 1500 kg/ha of oil after the 4th year. This study aimed to estimate combining ability of Jatropha genotypes by multivariate diallel analysis to select parents and crosses that allow gains in important agronomic traits. We performed crosses in ... more

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Alleles; Genotype; Hybridization, Genetic; Models, Genetic; Plant breeding; Polymorphism, Genetic; Quantitative Trait, Heritable; seeds; Zea mays

Genetic improvement is essential to achieve increments in maize (Zea mays L.) grain yield components. It may be obtained through crosses, which enable to exploit the effects of intervarietal heterosis, allelic complementarity, as well as gene actions and effects. This study estimated the components of variance and genetic parameters (REML/BLUP) of an intervarietal diallel to select and predict ... more

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Alleles; Cotton Fiber; Genotype; Gossypium; Hybridization, Genetic; Plant breeding; Polymorphism, Genetic; Quantitative Trait, Heritable

Final cotton quality is of great importance, and it depends on intrinsic and extrinsic fiber characteristics. The objective of this study was to estimate general (GCA) and specific (SCA) combining abilities for technological fiber traits among six upland cotton genotypes and their fifteen hybrid combinations, as well as to determine the effective genetic effects in controlling the traits ... more

D.R. Queiroz; F.J.C. Farias; J.J.V. Cavalcanti; L.P. Carvalho; D.G. Neder; L.S.S. Souza; F.C. Farias; P.E. Teodoro
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