Research Article

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Cariniana estrellensis is one of the largest trees found in Brazilian tropical forests. The species is typical of advanced stages of succession, characteristic of climax forests, and essential in genetic conservation and environmental restoration plans. In this study, we assessed Mendelian inheritance, genetic linkage, and genotypic disequilibrium in nine microsatellite loci for a C. ... more

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Molecular identification is very useful in cases where morphology-based species identification is not possible. Examples for its application in cetaceans include the identification of carcasses of stranded animals in advanced state of decomposition and body parts that are illegally traded. One DNA region that is often used for molecular identification is the Folmer region of the mitochondrial ... more

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The success of recovery programs on degraded areas is dependent on the genetic material to be used, which should present heterozygosity and genetic diversity in native and recovered populations. This study was carried out to evaluate the model efficiency to enable the recovery of a degraded area of the Lower São Francisco, Sergipe, Brazil. The target species for this study was Schinus ... more

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Ascomycota; Crops, Agricultural; Disease resistance; Genetic variation; Incidence; Phosphorus; Plant Diseases; Selection, Genetic; Zea mays

Northern leaf blight (NLB), caused by Exserohilum turcicum, is one of the main foliar diseases that affect popcorn culture. Farmers use many control measures to minimize damage caused by this disease, among which, the use of cultivars with genetic resistance is the most effective and economical. The aim of this study was to investigate genetic variability influencing resistance to NLB in 25 ... more

A.T. Amaral; R.M. Ribeiro; P.H.D. Santos; T.P.S. Poltronieri; J.M.S. Vivas; I.F.S. Gerhardt; B.M. Carvalho; C.S. Freitas; S.B. Miranda
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Sorghum biomass is an interesting raw material for bioenergy production due to its versatility, potential of being a renewable energy source, and low-cost of production. The objective of this study was to evaluate the genetic variability of biomass sorghum genotypes and to estimate genotypic, phenotypic, and environmental correlations, and direct and indirect effects of seven agronomic traits ... more

T.P.S. Vendruscolo; M.A.A. Barelli; M.A.S. Castrillon; R.S. da Silva; F.T. de Oliveira; C.L. Corrêa; B.W. Zago; F.D. Tardin
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5' Untranslated Regions; Argentina; Genetic variation; Genetics, Population; Humans; Thymidylate synthase

Thymidylate synthase (TYMS) is a key enzyme in nucleotide synthesis and therefore, an important target of many chemotherapeutic agents. Expression of TYMS mRNA is thought to be modulated by a 28-bp tandem repeat polymorphism within its 5'-untranslated region, raising the question of this variant's utility in predicting the efficacy and toxicity of cancer treatment regimens. The aim of the ... more

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Breeding; Crosses, Genetic; Disease resistance; Genetic variation; Genotype; Gossypium; Phenotype; Quantitative Trait, Heritable

Studying genetic diversity among a group of genotypes is important in genetic breeding because identifying hybrid combinations of greater heterotic effect also increases the chance of obtaining plants with favorable allele combinations in an intra-population selection program. The objective of this study was to compare different types of long and extra-long staple cotton and their genetic ... more

L.P. de Carvalho; F.J.C. Farias; J.I.S. Rodrigues; N.D. Suassuna; P.E. Teodoro
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Sugarcane breeding programs have been adapting to a new market demand: aside from high sucrose yield per hectare, the sector needs new cultivars with higher fiber percentages. The selection of sugarcane clones based on phenotype alone is a complex task. The selected clones should display high performance in a series of yield- and quality-related traits. Selection indices can provide ... more

A.A.C. de Azeredo; L.L. Bhering; B.P. Brasileiro; C.D. Cruz; L.C.I. Silveira; R.A. Oliveira; J.C.Bespalho Filho; E. Daros
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P. Liu; Z.X. Yang; X.M. Chen; P. Yang
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Digital image analysis of seeds has been used for the identification of cultivars, determination of seed color and mechanical damage, and classification of different seed sizes. The aim of the present study was to evaluate the efficiency of digital image analysis of seeds for the quantification of genetic diversity among genotypes of inbred guava (Psidium guajava L.) families. The SAS Mini ... more

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