K.J. Damasceno-Silva
Genotypic gain with simultaneous selection of production, nutrition, and culinary traits in cowpea crosses and backcrosses using mixed models
The aim of this study was to estimate the genotypic gain with simultaneous selection of production, nutrition, and culinary traits in cowpea crosses and backcrosses and to compare different selection indexes. Eleven cowpea populations were evaluated in a randomized complete block design with four replications. Fourteen traits were evaluated, and the following parame.. Read More»
Genet. Mol. Res. 16(3): gmr16039736
DOI: 10.4238/gmr16039736
Anastomosis groups and molecular variation in Pseudocercospora griseola
The fungus Pseudocercospora griseola is the causal agent of angular leaf spot, a common bean (Phaseolus vulgaris L.) disease. The successful development of angular leaf spot-resistant cultivars depends on understanding the levels of variability in pathogen populations. P. griseola shows great pathogenic and genetic variation using inoculation on differential bean cultivars and molecular markers.. Read More»
Genet. Mol. Res. 14(3): 2015.July.3.19
DOI: 10.4238/2015.July.3.19
Selection of cowpea progenies with enhanced drought-tolerance traits using principal component analysis
Vigna unguiculata (L.) Walp (cowpea) is a food crop with high nutritional value that is cultivated throughout tropical and subtropical regions of the world. The main constraint on high productivity of cowpea is water deficit, caused by the long periods of drought that occur in these regions. The aim of the present study was to select elite cowpea genotypes with enha.. Read More»
Genet. Mol. Res. 14(4): 2015.December.7.10
DOI: 10.4238/2015.December.7.10
Genetic variation detected by RAPD markers in natural populations of babassu palm (Attalea speciosa Mart.)
The purpose of this study was to analyze the effects of management on the genetic structure of natural populations of Attalea speciosa in the State of Piauí, Brazil, using randomamplified polymorphic DNA (RAPD) markers. Three babassu populations under different management systems were selected. Polymerase chain reactions were performed for 20 RAPD primers. A total of 146 bands were gener.. Read More»
Genet. Mol. Res. 14(2): 2015.June.8.10
DOI: 10.4238/2015.June.8.10
Diallelic analysis to obtain cowpea (Vigna unguiculata L. Walp.) populations tolerant to water deficit
The purpose of this study was to identify parents and obtain segregating populations of cowpea (Vigna unguiculata L. Walp.) with the potential for tolerance to water deficit. A full diallel was performed with six cowpea genotypes, and two experiments were conducted in Teresina, PI, Brazil in 2011 to evaluate 30 F2 populations and their parents, one under water defic.. Read More»
Genet. Mol. Res. 15(2): gmr.15027996
DOI: 10.4238/gmr.15027996
Diallel crosses for resistance to Macrophomina phaseolina and Thanatephorus cucumeris on cowpea
This study aimed at identifying and selecting through partial diallel analysis, segregating populations of cowpea resistant to Macrophomina phaseolina and Thanatephorus cucumeris, based on the evaluation of general (GCA) and specific combining ability (SCA), involved in the genetic control of resistance. For this reason, 19 grouped cowpea genotypes, considering the .. Read More»
Genet. Mol. Res. 16(3): gmr16039804
DOI: 10.4238/gmr16039804
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