Cosme Damião Cruz's research while affiliated with Universidade Federal de Viçosa (UFV) and other places

Publications (412)

Preprint
Full-text available
Among the multi-trait models used to jointly study several traits and environments, the Bayesian framework has been a preferable tool for using a more complex and biologically realistic model. In most cases, the non-informative prior distributions are adopted in studies using the Bayesian approach. Still, the Bayesian approach tends to present more...
Article
Full-text available
Cotton (Gossypium hirsutum L.) is the world's leading natural textile fibre and is grown in over 60 countries, including Brazil, where it is an important agricultural commodity. The cultivation area currently covers approximately one million hectares in Brazil and has expanded into every region of the country, especially the Cerrado biome. Because...
Article
Full-text available
The chemical analysis of flowers has been studied for some crops. In coffee trees, the flower tissue analysis could anticipate the nutritional diagnosis. This study aimed to: (i) compare the mineral composition of coffee flowers and leaves; and to (ii) generate reference values for nutritional diagnosis of coffee trees, based on flower and leaf ana...
Article
Full-text available
This paper aims to estimate genetic and phenotypical parameters to assess the viability of early selection in progeny tests of Eucalyptus sp. We analyzed data from experiments conducted in the state of Minas Gerais, Brazil. The evaluated traits were diameter at breast height and plant height in 482 progenies of full sibs under randomized block desi...
Article
Full-text available
The objective of this work was to verify the influence of the percentage of failures in a forest genetics experiment in the estimation of genetic parameters. The study consisted in the evaluation of two experiments of full‑sib families under randomized complete block design with three replicates conducted in the state of Minas Gerais, Brazil. The e...
Article
Full-text available
The wood anatomy of three commercial genotypes of eucalypt, harvested at the Suzano Pulp and Paper plantation areas, was analyzed in the search for features related to their differential tolerance to dieback and drought in field conditions. The average diameter of the vessels in the latewood, the vessel dispersion among diameter classes and theoret...
Article
Full-text available
In plant breeding, the dialelic models univariate have aided the selection of parents for hybridization. Multivariate analyses allow combining and associating the multiple pieces of information of the genetic relationships between traits. Therefore, multivariate analyses might refi ne the discrimination and selection of the parents with greater pot...
Article
The objective of this study was to estimate the direct and indirect effects of agricultural,morphological, physiological, and root traits of popcorn lines, under two conditions of water supply:full irrigation (FI) and drought stress (DS).Acomplete randomized block design withthree replicationswas used to evaluate the following traits:expanded popco...
Article
Full-text available
Identification and deployment of high-yielding and stress-tolerant maize hybrids adapted to stress-prone agro-ecologies is important for improving the food security and livelihoods of smallholder farmers in eastern Africa. The objectives of this study were to (i) assess the performance of maize hybrids under well-watered and drought stress conditio...
Article
Full-text available
This work aimed to present the optimum environment number methodology and propose the optimization of the National Sunflower Trials Network, by means of the environments exclusion that do not provide loss of the environmental variability already established. Grain and oil yield data of 16 genotypes evaluated at 16 environments of the National Sunfl...
Article
Full-text available
RESUMO - O objetivo deste trabalho foi avaliar a existência de interação entre genótipos e ambientes e estimar osparâmetros de adaptabilidade e estabilidade de genótipos de milho amiláceo. Para isto, 44 genótipos de milho amiláceode três ambientes das localidades da Região Oriental do Paraguai foram utilizados para estimar os parâmetros deadaptabil...
Article
Genetic diversity analysis has guided the choice of appropriate parents in breeding programs. Multivariate statistical methods such as discriminant analysis are used to obtain the necessary results in these studies. However, to obtain reliable results, one must meet assumptions such as covariance matrix heterogeneity and multivariate normality of t...
Article
Full-text available
This paper proposes the construction of a genetic linkage map with 376 recombinant inbred lines (RILs) derived from a cross between Mesoamerican × Andean common bean (Phaseolus vulgaris L) parents based on single nucleotide polymorphism (SNP) markers; and to detect quantitative trait loci (QTLs) associated with seven morpho-agronomic traits: number...
Article
Full-text available
The objectives of this study were to obtain information about genetic parameters of a partial diallel in common bean, as well as to evaluate the effects of growing seasons, locations and generations in these estimates in order to define the best strategies for the use of diallel analysis as methodology of selection of parents and populations in com...
Article
Full-text available
In Brazil, cotton cultivars are tested annually in different environments at the final stages of breeding programs. Thus, identifying groups of environments with similar edaphoclimatic characteristics is crucial to determine the environments with higher discriminating ability of genotypes, known as essential environments. This work aimed to divide...
Article
Full-text available
The objective of the present study was to propose fuzzy control systems to support the recommendation of cultivars of different agronomic crops. Grain yield data from 23 lines and 2 cultivars of red bean were used to evaluate the applicability of these controllers. Genotypes were evaluated in nine environments in the Zona da Mata region, Minas Gera...
Article
Full-text available
Fue empleado el método REML/BLUP para estimar los parámetros genéticos, y seleccionar los mejores individuos provenientes de una población de hermanos germanos de Dura x Dura, a partir de un análisis de correlación entre caracteres, realizando un agrupamiento de familias por disimilaridad multivariada y determinación del número de medidas repetidas...
Article
Full-text available
The mangabeira its figure out among the mains native fruit tree explored by extractivism in Brasil. The objective evaluate the genetic divergence of landraces in orientation of crosses using multivariate techinics. The complete random blocks experimental design with four repetitions was used to evaluate twelve quantitative characteristics from twel...
Article
Full-text available
Sacha inchi (Plukenetia volubilis) is native to the Amazon region and has a high seed content of mono and polyunsaturated fatty acids, making it interesting for the pharmaceutical and cosmetic industry. The purpose of this study was to analyze sacha inchi genetic diversity and describe accessions based on phenotypic characteristics. Fruits and seed...
Article
Full-text available
ABSTRACT Soybeans contain about 30% carbohydrate, mainly consisting of non-starch polysaccharides (NSP) and oligosaccharides. NSP are not hydrolyzed in the gastrointestinal tract of monogastric animals. These NSP negatively affect the development of these animals, especially the soluble fraction. This work aimed to establish a method to quantify NS...
Data
Manhattan plot for days to first flower (DFF) using quantile regression (QR). Results are sorted by quantile (τ), from 0.1 (A) to 0.9 (I). The solid and dashed lines show the Bonferroni-adjusted thresholds of 3.88 and 4.58 for alpha equals to 5% and 1%, respectively. (TIFF)
Article
Full-text available
Flowering is an important agronomic trait. Quantile regression (QR) can be used to fit models for all portions of a probability distribution. In Genome-wide association studies (GWAS), QR can estimate SNP (Single Nucleotide Polymorphism) effects on each quantile of interest. The objectives of this study were to estimate genetic parameters and to us...
Data
Manhattan plot for days to flowering (DTF) using quantile regression (QR). Results are sorted by quantile (τ), from 0.1 (A) to 0.9 (I). The solid and dashed lines show the Bonferroni-adjusted thresholds of 3.88 and 4.58 for alpha equals to 5% and 1%, respectively. (TIFF)
Data
Manhattan plot for days to flowering (DTF), using t traditional single-SNP analysis. The solid and dashed lines show the Bonferroni-adjusted thresholds of 3.88 and 4.58 for alpha equals to 5% and 1%, respectively. (TIFF)
Data
Manhattan plot for days to end of flowering (DEF) using quantile regression (QR). Results are sorted by quantile (τ), from 0.1 (A) to 0.9 (I). The solid and dashed lines show the Bonferroni-adjusted thresholds of 3.88 and 4.58 for alpha equals to 5% and 1%, respectively. (TIFF)
Data
Manhattan plot for days to end of flowering (DEF), using traditional single-SNP analysis. The solid and dashed lines show the Bonferroni-adjusted thresholds of 3.88 and 4.58 for alpha equals to 5% and 1%, respectively. (TIFF)
Data
Manhattan plot for days to first flower (DFF), using traditional single-SNP analysis. The solid and dashed lines show the Bonferroni-adjusted thresholds of 3.88 and 4.58 for alpha equals to 5% and 1%, respectively. (TIFF)
Data
Name of cultivars, year of release and research institution in charge of the 80 common bean cultivars. (PDF)
Data
Principal component (PC) analysis. (A) Scree plot and variance explained (%) by each component. (B) Plot for PC1 against PC2 illustrating the population structure of 80 common bean genotypes. (TIFF)
Article
Full-text available
The understanding of the genetic control involved in characters of agronomic interest is of extreme importance to breeders aiming at planning procedures for breeding programs. Thus, the objective of this work was to study genetic aspects related to earliness and grain yield found in the initial generations of soybean, twice each year. The study eva...
Article
Biomass estimation plays of crucial role in agriculture and agro-based industries. The macauba, Acrocomia aculeata (Jacq.) Lood., ex Mart., is a palm species that has been a focal point for research and development of an alternative biomass-bioenergy crop for the tropics. The macauba fruit components (exocarp, mesocarp, endocarp and seed/kernel) pr...
Article
Full-text available
One of the major challenges in sugarcane breeding programs is an efficient selection of genotypes in the initial phase. The purpose of this study was to compare modelling by artificial neural networks (ANN) and linear discriminant analysis (LDA) as alternatives for the selection of promising sugarcane families based on the indirect traits number of...
Article
Full-text available
This study aimed to identify promising arabica coffee genotypes for organic systems. The experiments were arranged in a randomized block design, with 30 genotypes and three replications. The adaptability and stability analysis was carried out using the modified centroid method, considering the mean yield of two biennia (2005/2006 and 2006/2007, 200...
Article
Full-text available
Characteristics related to seed quality have been rarely used in studies on the genetic diversity of passion fruit. The purpose of this study was to evaluate the genetic diversity between progenies constituted by hybrids and reciprocals, based on seed emergence and vigor traits. On the 28th day, emergence percentage, emergence speed index, shoot le...
Chapter
Soybean has been an important source of protein for either food or feed; breeding program for this species has turn to a competitive business between seed companies, where the application of the right statistical method in data analysis means to lead the market. The understanding of biometrics and its use along all phases in the breeding process di...
Chapter
In this chapter, we will describe several biometrical and statistical concepts that may help researches and breeders to analyze their experimental data and generate useful information to select superior genitors more accurate in a soybean breeding program. Methodologies presented here aim the formation of base population with large genetic variabil...
Article
Full-text available
Heart of palm harvesting and exploitation has reduced the natural reserves of açaí and juçara; hence, the peach palm is an excellent option as source of heart of palm that can reduce the pressure on these two species. The peach palm has high tillering and no post-harvest oxidation. An experiment in a randomized block design with 72 progenies of pea...
Article
Full-text available
The estimation of leaf area in kale is important because direct measurements are difficult and inaccurate, due to the leaf size, the irregularity of the leaf surface of some genotypes, the need for expensive equipment and intensive labor. The objective was to verify the efficiency of artificial neural networks to estimate the leaf area and verify t...
Article
Full-text available
The objective of this work was to evaluate the use of artificial neural networks in comparison with Bayesian generalized linear regression to predict leaf rust resistance in Arabica coffee (Coffea arabica). This study used 245 individuals of a F2 population derived from the self-fertilization of the F1 H511-1 hybrid, resulting from a crossing betwe...
Article
Full-text available
The objective of this work was to evaluate the use of artificial neural networks in comparison with Bayesian generalized linear regression to predict leaf rust resistance in Arabica coffee (Coffea arabica). This study used 245 individuals of a F2 population derived from the self-fertilization of the F1 H511-1 hybrid, resulting from a crossing betwe...
Article
Full-text available
Artificial neural networks (ANN) are computational models inspired by the neural systems of living beings capable of learning from examples and using them to solve problems such as non-linear prediction, and pattern recognition, in addition to several other applications. In this study, ANN were used to predict the value of the area under the diseas...
Article
Full-text available
The objective of this paper was to estimate the genetic divergence among 49 soybean (Glycine max L. Merrill.) genotypes to assist grain quality-focused breeding programs in the choice of progenitors. The genetic divergence was estimated using the Mahalanobis generalized distance from the percentages of protein, oil, and fatty acids oleic, linoleic...
Article
Full-text available
The objective of this work was to map QTL for agronomic traits in a Brazilian soybean population. For this, 207 F2:3 progenies from the cross CS3035PTA276-1-5-2 x UFVS2012 were genotyped and cultivated in Viçosa-MG, using randomized block design with three replications. QTL detection was carried out by linear regression and composite interval mappi...
Article
Full-text available
The objective of this work was to evaluate the effect of the distribution of QTL effects, of the type of validation population, and of phenotype adjustment in the accuracy of genome-wide selection. Two populations of full siblings with 500 individuals were simulated, with 1,000 loci markers being genotypically considered - 100 linked to QTL. The QT...
Article
Full-text available
The species E. oleifera is a promising genetic resource for oil palm breeding programs. The main purpose of this study was to quantify the genetic diversity within and between accessions collected in the Ecuadorian Amazon. Nine microsatellite markers were genotyped in 40 plants from the E. oleifera germplasm bank of INIAP in Ecuador. The number of...
Article
Full-text available
The aim of this work is the construction of a genetic map and identification of quantitative trait loci (QTLs) that control characteristics of the root system of rice. We evaluated a F2:3 population composed of 150 families from the cross between the varieties IAC 165 × BRS Primavera. Genotyping was performed in the F2 population using 3,742 SNP (S...
Article
Full-text available
The Genes Software is useful for analyzing and processing phenotypic and molecular data using different biometric models. In the current version we dispose routines to integrate it with three other softwares: the R, Matlab and Selegen. This version allows in plant and animal breeding complementary analyzes in several breeding research fields as gen...
Article
Full-text available
Forest breeding is a science that has been developing in Brazil since 1941 being the Eucalyptus a highlighted genus in this scenario. In a global scene, Brazil is displayed prominently in productivity of Eucalyptus planting, due to favorable environmental conditions to cultivation development, and the incentive in research for improvement of traits...
Article
Recently, there is an increasing interest on semi- and non-parametric methods for genome-enabled prediction, among which the Bayesian regularized artificial neural networks (BRANN) stand. We aimed to evaluate the predictive performance of BRANN and to exploit SNP effects and heritability estimates using two different approaches (relative importance...
Article
Full-text available
ABSTRACT The aim of this study was to estimate the optimum plot size and number of replications in papaya field experiments. Eleven variables were evaluated in four cultivars of papaya with planting in different seasons between 2011 and 2013 in the north of the Espírito Santo state. Analysis were made from blank test applied to 240 selected for pla...
Article
Full-text available
Ceratocystis wilt caused by the fungus Ceratocystis fimbriata, is currently one of the major diseases in commercial plantations of Eucalyptus trees in Brazil. Deployment of resistant genotypes has been the main strategy for effective disease management. The present study aimed at identifying genomic regions underlying the genetic control of resista...
Article
Full-text available
This study aimed to evaluate the gene action associated with yield-related traits, including mean stalk weight (MSW), tons of sugarcane per hectare (TCH), and fiber content (FIB) in sugarcane. Moreover, the viability of individual reciprocal recurrent selection (RRSI-S1) was verified, and the effect of inbreeding depression on progenies was checked...
Article
Full-text available
Desiccation aims to control weeds and cause crop defoliation. The procedure facilitates the work of harvesters, allows earlier harvesting and standardization, and can reduce losses. The objective of this study was to evaluate the effect of pre-harvest desiccation on cycle time, seed yield and seed physiological quality of soybean cultivars of deter...
Article
Full-text available
The objective of this work was to study the distribution of values of the coefficient of variation (CV) in the experiments of papaya crop (Carica papaya L.) by proposing ranges to guide researchers in their evaluation for different characters in the field. The data used in this study were obtained by bibliographical review in Brazilian journals, di...
Article
Full-text available
Hybridization is an important improvement method used in the soybean culture. However, there is little information on the recommended relative moisture and air temperature degree for artificial pollination. Therefore, this study aimed to determine the efficiency of artificial hybridization between soybean parents according to different periods of t...
Article
Full-text available
The objective of this work was to evaluate the relationship between the parameters of divergence on QTL regions and the genetic variance in soybean genotypes for protein and oil contents. Two groups of genotypes were evaluated for protein and oil contents in different environments, and genotyped with molecular markers of QTL regions. Subgroups were...
Article
Full-text available
The objective of this study was to evaluate the genotypic stability of agronomic traits in hybrids of Panicum maximum. Hybrids originating from the crosses between two sexual parents and cultivars Mombasa and Tanzania were evaluated in an incomplete-block design. Evaluated traits were total dry matter, leaf dry matter, stem dry matter, percentage o...
Article
Full-text available
Methods to obtain phenotypic information were evaluated to help breeders choosing the best methodology for analysis of genetic diversity in backcross populations. Phenotypes were simulated for 13 characteristics generated in 10 populations with 100 individuals each. Genotypic information was generated from 100 loci of which 20 were taken at random...
Article
Full-text available
The efficiency of artificial neural networks (ANN) to model complex problems may enable the prediction of characteristics that are hard to measure, providing better results than the traditional indirect selection. Thus, this study aimed to investigate the potential of using artificial neural networks (ANN) for indirect selection against early flowe...
Article
Full-text available
Among the factors that may cause decreases in soybean yield there are the foliar diseases that despite control it can limit grain yield. The Asian soybean rust (Phakopsora pachyrhizi) is considered the most important disease of soybean in Brazil. The aim of this work was to simulate the progress of Asian rust in Brazilian soybean cultivars by remov...
Article
Full-text available
This research aimed to compare methods of selecting Coffea canephora clones, considering the genotypes x years interaction, based on data of processed coffee yield obtained from 2000 to 2004 and 2007 to 2011. The significant clones x seasons (CS) interaction, indicates that the genotypes showed no consistent performance over the years. The LIN & BI...
Article
Full-text available
The aim of this study was to evaluate the methodology of Artificial Neural Networks (ANN) in order to predict wood volume in eucalyptus and its impacts on the selection of superior families, and to compare artificial neural network with regression models. Data used were obtained in a random block design with 140 half-sib families with five replicat...
Article
Full-text available
Coffee leaf rust (CLR) caused by Hemileia vastatrix Berk. et Br. is one of the major Coffea arabica diseases worldwide. CLR resistance has been attributed to at least nine dominant genes, as single or in combination. We present an inheritance study and mapping loci involved in the Híbrido de Timor (HDT) UFV 443-03 resistance to race I, race II, and...
Article
The aim of this study was to evaluate the diversity of phenotypic and molecular traits in soybean varieties launched in forty years of breeding. The DNA was amplified with 42 microsatellite markers (SSR). Polymorphism of 38 SSR markers were identified in polyacrylamide gel at 10%. 106 alleles were amplified with an average of 2.52 alleles per SSR l...
Article
Full-text available
Microsatellites or simple sequence repeats (SSRs) are useful molecular markers allowing for efficient conservation and sustainable use of genetic resources of plant species. Development of SSR marker system for new species is a very expensive task and time consuming. Cross-species amplification of microsatellite loci is considered as a cost-effecti...
Article
The work was developed with objective of evaluate the grain yield, the adaptability and phenotypic stability of soybean cultivars and lineages with earlier and medium cycles. The experiments were carried out in Viçosa, Florestal, São Gotardo and Rio Paranaíba, in the Minas Gerais State, in two agricultural years. We used the experimental design of...
Data
Full-text available
The philosophy of intrapopulation combined selection is the search for and identification of individuals with superior genotypic behavior, based on their performance compared to the family mean and, at the same time, of their family mean in relation to the population mean, through the weighting of the phenotypic values represented, respectively, by...
Article
Full-text available
The objective of this study was to evaluate Artificial Neural Networks (ANN) applied in an selection process within sugarcane families. The best ANN model produced no mistake, but was able to classify all genotypes correctly, i.e., the network made the same selective choice as the breeder during the simulation individual best linear unbiased predic...
Article
Full-text available
O objetivo deste trabalho foi desenvolver e validar uma metodologia de análise da adaptabilidade e da estabilidade fenotípica baseada em regressão quantílica (RQ). Para tanto, foram simulados valores fenotípicos com distribuição simétrica e com distribuição assimétrica à direita e à esquerda, com ou sem a presença de "outliers". A metodologia propo...