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Giustina LD, Baldoni AB, Tonini H, Azevedo VCR, Neves LG, Tardin FD, Sebbenn AM. Research Article Hierarchical outcrossing among and within fruits in Bertholletia excelsa Bonpl. (Lecythidaceae) open-pollinated seeds. Genet Mol Res 2018. [DOI: 10.4238/gmr16039872] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Chimello AM, Jesus JG, Teodoro PE, Rossi AAB, Araújo KL, Marostega TN, Neves LG, Barelli MAA. Morphological descriptors and ISSR molecular markers in the evaluation of genetic variability of Tectona grandis genotypes. Genet Mol Res 2017; 16:gmr-16-02-gmr.16029665. [PMID: 28549207 DOI: 10.4238/gmr16029665] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
This study aimed to evaluate the genetic variability of the teak germplasm bank, using morphological traits and inter-simple sequence repeat molecular markers. Thirty clones were evaluated in a randomized complete block design with three replicates, and each plot was composed of three plants. A joint analysis of quantitative and qualitative variables was performed using the Gower algorithm. Quantitative, qualitative, and molecular variables were analyzed simultaneously using the Ward-MLM procedure. There is genetic variability among the 30 teak genotypes studied, considering the quantitative, qualitative, and molecular variables by the Ward-MLM statistical procedure. Morphological traits used proved to be efficient for the study of genetic variability; however, it was not possible to compose a descriptor table for clonal teak genotypes based on the traits evaluated. The Gower method was efficient in discriminating the groups, demonstrating that the simultaneous analysis of qualitative and quantitative data is feasible and can allow greater efficiency in the knowledge of the variability among teak genotypes. The genotype 22 showed to be the most divergent compared to the other genotypes, except for the cluster of genotypes by the UPGMA method based on the Gower distance obtained by the Ward-MLM procedure, which formed a group with genotypes 9 and 30, in the morphological and molecular analyses and was grouped alone.
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Affiliation(s)
- A M Chimello
- Laboratório de Melhoramento de Plantas, Departamento de Agronomia, , , Brasil
| | - J G Jesus
- Laboratório de Melhoramento de Plantas, Departamento de Agronomia, , , Brasil
| | - P E Teodoro
- Departamento de Agronomia, Universidade Federal do Mato Grosso do Sul, Chapadão do Sul, MS, Brasil
| | - A A B Rossi
- Laboratório de Melhoramento de Plantas, Departamento de Agronomia, , , Brasil
| | - K L Araújo
- Laboratório de Melhoramento de Plantas, Departamento de Agronomia, , , Brasil
| | - T N Marostega
- Laboratório de Melhoramento de Plantas, Departamento de Agronomia, , , Brasil
| | - L G Neves
- Laboratório de Melhoramento de Plantas, Departamento de Agronomia, , , Brasil
| | - M A A Barelli
- Laboratório de Melhoramento de Plantas, Departamento de Agronomia, , , Brasil
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Cabral NSS, Medeiros AM, Neves LG, Sudré CP, Pimenta S, Coelho VJ, Serafim ME, Rodrigues R. Genotype x environment interaction on experimental hybrids of chili pepper. Genet Mol Res 2017; 16:gmr-16-02-gmr.16029551. [PMID: 28437553 DOI: 10.4238/gmr16029551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
In Brazil, cultivation of hybrid plants comprise near 40% of the area grown with vegetables. For Capsicum, hybrids of bell and chili peppers have already exceeded 50% and over 25% of all are commercialized seeds. This study aimed to evaluate new pepper hybrids in two environments, Cáceres, MT, and Campos dos Goytacazes, RJ, Brazil. Nine experimental hybrids of C. baccatum var. pendulum were tested and trials were performed in a randomized block design, with three replications and eight plants per plot. In each environment, plants were assessed for canopy diameter, plant height, number of fruit per plant, mean fruit mass per plant, fruit length and diameter, pulp thickness, and content of soluble solids. Seven of the eight traits have differed significantly due to environment variation. Furthermore, genotype and environment interaction was highly significant for number of fruit per plant, mean fruit mass per plant, fruit length, and fruit diameter. Choosing a hybrid to be grown in one of the studied locations must be in accordance with the sought characteristics since there is a complex interaction for some studied traits.
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Affiliation(s)
| | - A M Medeiros
- Laboratório de Melhoramento Genético Vegetal, , , Brasil
| | - L G Neves
- Departamento de Agronomia, , , Brasil
| | - C P Sudré
- Laboratório de Melhoramento Genético Vegetal, , , Brasil
| | - S Pimenta
- Laboratório de Melhoramento Genético Vegetal, , , Brasil
| | | | - M E Serafim
- Departamento de Agronomia, Instituto Federal de Educação, Ciência e Tecnologia de Mato Grosso, , Brasil
| | - R Rodrigues
- Laboratório de Melhoramento Genético Vegetal, , , Brasil
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Maracahipes AC, Correa JWS, Teodoro PE, Araújo KL, Barelli MAA, Neves LG. Research Article Correlation study of resistance components in the selection of Capsicum genotypes resistant to the fungus Colletotrichum gloeosporioides. Genet Mol Res 2017; 16:gmr-16-03-gmr.16039720. [DOI: 10.4238/gmr16039720] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Giustina LD, Baldoni AB, Tardin FD, Gregolin FS, Tonini H, Neves LG, Ribeiro LP, Teodoro PE. Research Article Genetic diversity between and within half-sib families of Brazil nut tree (Bertholletia excelsa Bonpl.) originating from native forest of the Brazilian Amazon. Genet Mol Res 2017. [DOI: 10.4238/gmr16039839] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Campos AL, Marostega TN, Cabral NSS, Araújo KL, Serafim ME, Seabra-Júnior S, Sudré CP, Rodrigues R, Neves LG. Morphoagronomic and molecular profiling of Capsicum spp from southwest Mato Grosso, Brazil. Genet Mol Res 2016; 15:gmr8167. [PMID: 27525842 DOI: 10.4238/gmr.15038167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
The genus Capsicum ranks as the second most exported vegetable in Brazil, which is also considered to be a center of diversity for this genus. The aim of this study was to rescue genetic variability in the genus Capsicum in the southwest region of Mato Grosso, and to characterize and estimate the genetic diversity of accessions based on morphoagronomic descriptors and inter-simple sequence repeat molecular markers. Data were obtained following the criteria of the International Plant Genetic Resources Institute, renamed Bioversity International for Capsicum. Data were analyzed using different multivariate statistical techniques. An array of binary data was used to analyze molecular data, and the arithmetic complement of the Jaccard index was used to estimate the genetic dissimilarity among accessions. Six well-defined groups were formed based on the morphological characterization. The most divergent accessions were 142 and 126, with 125 and 126 being the most similar. The groups formed following agronomic characterization differed from those formed by morphological characterization, and there was a need to subdivide the groups for better distinction of accessions. Based on molecular analysis, accessions were divided into two groups, and there was also a need to subdivide the groups. Based on joint analysis (morphological + agronomic + molecular), six groups were formed with no duplicates. For all groups, the cophenetic correlation coefficient was higher than 0.8. These results provide useful information for the better management of the work collection. All correlations between the combined distance matrix were significant by the Mantel test.
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Affiliation(s)
- A L Campos
- Departamento de Agronomia, Laboratório de Melhoramento de Plantas, Universidade do Estado de Mato Grosso, Cáceres, MT, Brasil
| | - T N Marostega
- Departamento de Agronomia, Laboratório de Melhoramento de Plantas, Universidade do Estado de Mato Grosso, Cáceres, MT, Brasil
| | - N S S Cabral
- Departamento de Agronomia, Laboratório de Melhoramento de Plantas, Universidade do Estado de Mato Grosso, Cáceres, MT, Brasil
| | - K L Araújo
- Departamento de Agronomia, Laboratório de Melhoramento de Plantas, Universidade do Estado de Mato Grosso, Cáceres, MT, Brasil
| | - M E Serafim
- Departamento de Engenharia Florestal, Laboratório de Solos, Instituto Federal de Mato Grosso, Cáceres, MT, Brasil
| | - S Seabra-Júnior
- Departamento de Agronomia, Laboratório de Melhoramento de Plantas, Universidade do Estado de Mato Grosso, Cáceres, MT, Brasil
| | - C P Sudré
- Departamento de Agronomia, Laboratório de Melhoramento Genético Vegetal, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ, Brasil
| | - R Rodrigues
- Departamento de Agronomia, Laboratório de Melhoramento Genético Vegetal, Universidade Estadual do Norte Fluminense, Campos dos Goytacazes, RJ, Brasil
| | - L G Neves
- Departamento de Agronomia, Laboratório de Melhoramento de Plantas, Universidade do Estado de Mato Grosso, Cáceres, MT, Brasil
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