lassification using a scale of visual notes is a strategy used to select erect bean plants in order to improve bean plant architectures. Use of morphological traits associated with the phenotypic expression of bean architecture in classification procedures may enhance selection. The objective of this study was to evaluate the potential of artificial neural networks .. Read More»
Genet. Mol. Res. 16(2): gmr16029500
DOI: 10.4238/gmr16029500
This study evaluated the performance and estimated the genetic potential of segregating populations of red bean. Twenty populations of the second cycle of recurrent selection for red bean breeding at Universidade Federal de Viçosa were advanced to the F5 generation in bulk with selection for grain appearance. Populations plus five controls were evaluated for .. Read More»
Genet. Mol. Res. 15(2): gmr.15027329
DOI: 10.4238/gmr.15027329
Knowledge of genetic control of plant architecture in the common bean can help breeders define the most adequate breeding strategy to optimize gains. We examined genetic control of plant architecture in the common bean by means of partial diallel crosses. Fourteen bean lines were crossed under a partial diallel scheme, in which group 1 was composed of 8 erect plant lines and group 2 of 6 carioc.. Read More»
Genet. Mol. Res. 12(3): 2013.January.30.8
DOI: 10.4238/2013.January.30.8
In this study, conducted in two different seasons, we aimed to choose parents to obtain promising segregating populations for the extraction of black bean (Phaseolus vulgaris L.) lines that are superior in terms of disease resistance, plant architecture, and grain yield. Twelve parents were arranged in two groups to compose a partial diallel in a 5 x 7 scheme. Group.. Read More»
Genet. Mol. Res. 15(3): gmr.15038574
DOI: 10.4238/gmr.15038574
The objective of this study was to select genitors based on F1 and F2 generations, evaluated in different environments, to obtain segregating populations for the identification of strains showing improved earliness, yield, and carioca-type grains. Nine bean strains were crossed in a partial diallel scheme (4 x 5), in which group 1 included 4 strains with early cycles and group 2 included 5 elit.. Read More»
Genet. Mol. Res. 14(3): 2015.July.27.9
DOI: 10.4238/2015.July.27.9
We aimed to evaluate 40 common bean cultivars recommended by various Brazilian research institutions between 1970 and 2013 and estimate the genetic progress obtained for grain yield and other agronomic traits. Additionally, we proposed a bi-segmented nonlinear regression model to infer the year in which breeding began to show significant gains in Brazil. The experiment was carried out in Vi&cce.. Read More»
Genet. Mol. Res. 15(3): gmr.15038523
DOI: 10.4238/gmr.15038523
Cultivars of common bean with more erect plant architecture and greater tolerance to degree of lodging are required by producers. Thus, to evaluate the potential of hypocotyl diameter (HD) in family selection for plant architecture improvement of common bean, the HDs of 32 F2 plants were measured in 3 distinct populations, and the characteristics related to plant architecture were analyzed in t.. Read More»
Genet. Mol. Res. 14(3): http://dx.doi.org/2015.September.28.3
DOI: http://dx.doi.org/10.4238/2015.September.28.3
Recombinant inbred lines (RILs) are a valuable resource for building genetic linkage maps. The presence of genetic variability in the RILs is essential for detecting associations between molecular markers and loci controlling agronomic traits of interest. The main goal of this study was to quantify the genetic diversity of a common beanRIL population derived from a cross between Rudá (Me.. Read More»
Genet. Mol. Res. 15(3): gmr.15038112
DOI: 10.4238/gmr.15038112
The lack of informativity of samples from heterozygotic individuals is one of the hindrances in the mapping of quantitative trait loci of outbred populations, since it is not normally possible to identify the origin of each allele. One way to include these individuals in analyses would be to genotype their endosperm, considering that a heterozygote (Aa) has AAa or A.. Read More»
Genet. Mol. Res. 8(1): vol8-1gmr585
DOI: 10.4238/vol8-1gmr585
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