Morphological characterization and analysis of genetic variability among pepper accessions

Bianchi, Paola Alvares; Dutra, Iris Petronilia; Moulin, Monique Moreira; Santos, Jardel Oliveira; Júnior, Alexandre Cristiano Santos

doi:10.1590/0103-8478cr20150825

Cited by 20 publications

(24 citation statements)

References 15 publications

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“…As in the present work, Bianchi et al [17] in a study with 30 accessions of Capsicum also found great variability for fruit diameter and plant height characteristics, with formation of seven and eight phenotypic groups, respectively, for these characteristics. As for the number of seeds, leaf width and leaf length, the authors also report lower variability among the genotypes, with three groups for each of the mentioned characters.…”

Section: Resultssupporting

confidence: 85%

Characterization and Diversity of Peppers (Capsicum spp.) Genotypes Based on Morphological Traits Using Multivariate Analysis

Santos

Moulin

Rangel

et al. 2019

JEAI

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The present work aimed to characterize and evaluate Capsicum peppers in the South of the State of Espírito Santo, in order to estimate the variability among the accessions for the Germplasm Bank implementation. For this, 33 genotypes were collected through donations in four municipalities in the region. The genotypes were characterized based on nine quantitative descriptors: number of seeds per fruit (NS), number of fruit locules (NL), number of fruits per plant (NFR), plant height (PH), leaf width (LW), leaf length (LL), fruit length (FRL) and fruit diameter (FRD). Analysis of variance and means grouping by the Scott-Knott test was performed (P=.01). To estimate the diversity, the Tocher method was realized. The GT Biplot analysis was performed with using RStudio program to estimate discrimination, representativeness and correlation of characteristics. It was found a great diversity among the studied genotypes, being able to emphasize the accession Ifes 01 and Ifes 03 as the most divergent ones. The Tocher grouping allowed the formation of seven groups. The biplot analysis presented the formation of three groups of characteristics. The access Ifes 01 stood out for the group of characteristics FRL, NS and FRD. The Ifes 32 accession was highlighted for the PH and DC characteristics group, and the Ifes 20 accession was highlighted for the group formed by the NFR characteristic. It was observed that the characteristics that contributed the most to the divergence of accessions were PH and DC, and the most representative characteristic was DC. So, it’s concluded that there is great variability among the genotypes collected, presenting great phenotypic variation for the nine characters studied. In addition, some accesses were promising for plant breeding programs, pointing to gains in the various segments of the peppers market, which shows the importance of the collections of the producers in the South of Espírito Santo.

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Section: Resultssupporting

confidence: 85%

Characterization and Diversity of Peppers (Capsicum spp.) Genotypes Based on Morphological Traits Using Multivariate Analysis

Santos

Moulin

Rangel

et al. 2019

JEAI

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“…Group I allocated accesses that presented median values for the majority of the evaluated characteristics and greater heterogeneity regarding the collection site, grouping accesses representatives of all the localities, due to the intense exchange of seeds among small producers. In agreement with this study, other studies also observed this non-association (RÊGO et al, 2011;MOULIN et al, 2012;BIANCHI et al, 2016). Group II had accesses that presented the highest averages for leaf length and width.…”

Section: Resultssupporting

confidence: 91%

Morpho-agronomic characterization and analysis of genetic divergenceamong accessions of tomatoes (Solanum lycopersicum L.)

et al. 2018

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The collection and characterization of tomato germplasm are of relevant importance for agriculture. This study aimed to collect and characterize, by way of morphological description and statistical tools for the composition of groups, tomato accesses from the Southern and Serrana regions of the State of Espírito Santo, as well as to establish the tomato germplasm bank of the Ifes - Campus de Alegre. Thirty-seven accessions were collected from different commercial locations of Espírito Santo. The experiment was conducted in the Ifes Campus de Alegre in the Agroecology sector. For the morpho-agronomic characterization, sixteen essential descriptors were used, nine quantitative and seven qualitative. In the color of the ripe fruit, there was the formation of five distinct groups with the colors yellow, green, orange, pink and red. In the format of the fruit, three groups were formed, slightly flattened, flattened and rounded. The ANOVA showed that there was a significant difference for all the quantitative characteristics evaluated. According to the Ward-MLM procedure, due to the high likelihood function in group seven (from 130.71), it was possible to group the 37 genotypes into seven groups. The greatest dissimilarity was observed in groups V and VII with a distance of 330.02, and the least dissimilar ones, groups IV and VI, with 8.21. Genetic variability was detected in tomato germplasm for the morpho-agronomic characteristics. Many of the accessions are promising sources of phenotypes of interest to the Ifes germplasm bank.

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“…Germplasm resources in a gene banks can be more detailed and reliable if morphological traits are associated with the molecular markers which can often lead to more accurate genetic information and better distinction between accessions since they are stable and detectable in all tissues regardless the plant development stage. Moreover, they do not consider environmental, pleiotropic, and epistatic effects [27,28]. Various types of molecular markers are available for identification and characterization of genetic diversity.…”

Section: Introductionmentioning

confidence: 99%

Biomorphological Characterization of Brazilian Capsicum Chinense Jacq. Germplasm

et al. 2020

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Loss of biodiversity and ecosystem degradation become major concerns worldwide, making the conservation process an important strategy for maintaining biodiversity. Capsicum chinense Jacq. is the most Brazilian species of the genus, with representatives in different biomes. Anthropic pressure, such as burns, real estate speculation, and changing cultivation habit has led to risks of genetic erosion. Conservation and characterization of conserved accessions are paramount to ensure genetic diversity, useful for the bioeconomy and for genetic improvement. We report the characterization of 55 C. chinense accessions from four different regions of Brazil and one accession from Peru. The accessions were characterized based on 37 morpho-agronomic variables, Inter Simple Sequence Repeats—ISSR and Simple Sequence Repeat—SSR. Qualitative descriptors were analyzed using a descriptive statistical, while the quantitative descriptors were analyzed via F test and significant differences in mean values were separated using Scott-Knott test. The relative contribution of each quantitative trait was determined. A correlation between morphological and molecular distances was calculated. Color of ripe fruit and fruit shape had the largest number of observed classes. Six distinct groups and the joint analysis presented an entanglement rate of 0.58, evidencing the divergence of accessions between the groups of both dendrograms. Bayesian analysis allowed the distinction of two clusters for SSR. A significant variability was observed among accession with potential to integrate several breeding programs.

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Morphological characterization and analysis of genetic variability among pepper accessions

Abstract: ABSTRACT

Cited by 20 publications

References 15 publications

Characterization and Diversity of Peppers (Capsicum spp.) Genotypes Based on Morphological Traits Using Multivariate Analysis

Characterization and Diversity of Peppers (Capsicum spp.) Genotypes Based on Morphological Traits Using Multivariate Analysis

Morpho-agronomic characterization and analysis of genetic divergenceamong accessions of tomatoes (Solanum lycopersicum L.)

Biomorphological Characterization of Brazilian Capsicum Chinense Jacq. Germplasm

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