Analysis of Divergence and Correlation of Quantitative Traits in Ornamental Pepper (Capsicum Spp.)

Rêgo, Maílson Monteiro do; Sapucay, M. J. L. C.; Rêgo, Elizanilda Ramalho do; Araújo, Emmanuelle Rodrigues

doi:10.17660/actahortic.2015.1087.52

Cited by 11 publications

(11 citation statements)

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“…Early descriptors that are significantly correlated with fruit development stage are desirable in characterization studies, and for selection in breeding purposes, this reducing labor, input, and time. Rêgo et al (2015), found positive correlations between FFM and FWT, FL, and DFM, relating fruit quality to yield for 40 C. baccatum accessions. However, negative correlations were observed for NFP and FDMC.…”

Section: Morphoagronomic Characterizationmentioning

confidence: 87%

Molecular and agronomic analysis of intraspecific variability in Capsicum baccatum var. pendulum accessions

et al. 2016

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Capsicum baccatum is one of the most important chili peppers in South America, since this region is considered to be the center of origin and diversity of this species. In Brazil, C. baccatum has been widely explored by family farmers and there are different local names for each fruit phenotype, such as cambuci and dedo-de-moça (lady's finger). Although very popular among farmers and consumers, C. baccatum has been less extensively studied than other Capsicum species. This study describes the phenotypic and genotypic variability in C. baccatum var. pendulum accessions. Twenty-nine accessions from the Universidade Estadual do Norte Fluminense Darcy Ribeiro gene bank, and one commercial genotype ('BRS-Mari') were evaluated for 53 morphoagronomic descriptors (31 qualitative and 22 quantitative traits). In addition, accessions were genotyped using 30 microsatellite primers. Three accessions from the C. annuum complex were included in the molecular characterization. Nine of 31 qualitative descriptors were monomorphic, while all quantitative descriptors were highly significant different between accessions (P < 0.01). Using the unweighted pair group method using arithmetic averages, four groups were obtained based on multicategoric variables and five groups were obtained based on quantitative variables. In the genotyping analysis, 12 polymorphic simple sequence repeat primers amplified in C. baccatum with dissimilarity between accessions ranging from 0.13 to 0.91, permitting the formation of two distinct groups for Bayesian analysis. These results indicate wide variability among the accessions comparing phenotypic and genotypic data and revealed distinct patterns of dissimilarity between matrices, indicating that both steps are valuable for the characterization of C. baccatum var. pendulum accessions.

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Section: Morphoagronomic Characterizationmentioning

confidence: 87%

Molecular and agronomic analysis of intraspecific variability in Capsicum baccatum var. pendulum accessions

et al. 2016

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“…In order to use genetic resources efficiently, knowledge and organization in germplasm banks is essential, allowing the exploration of genetic variability. The effective use of variability in breeding programs depends on the information available about the population being studied (Rêgo et al, 2009;Rêgo et al, 2015b). The information about a germplasm collection's variability helps to make the breeding process more efficient by describing the different accessions in the collection and their traits of interest (Neto et al, 2014;Costa et al 2015;Neitzke et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Research Article Genetic diversity among accessions of Capsicum annuum L. through morphoagronomic characters

Pessoa¹,

RÃago²,

Carvalho³

et al. 2018

Genet. Mol. Res.

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Genetic variability among pepper genotypes is essential in obtaining hybrid combinations with greater heterotic effect and in obtaining superior strains. This work's goal was to evaluate the genetic diversity between accessions of Capsicum annuum L., indicating the selection of promising individuals for ornamental purposes. The experiment was carried out in at the Plant Biotechnology Laboratory of the Center of Agricultural Sciences, Federal University of Paraíba. The experiment was conducted in a completely randomized design with 16 treatments and eight replications. The plants were evaluated for 28 morphoagronomic traits. Data were submitted to analysis of variance and grouped according to Scott and Knott's test at 1% probability. The Tocher grouping was performed based on Mahalanobis distance and analysis of canonical variables was performed with graphical dispersion of the accessions. All variables were significant by the F test (p=0.01) and presented high heritability and a CVg/CVe ratio higher than 1.0 for most traits, indicating genetic divergence between accessions. In keeping with the Scott-Knott's test (p=0.01), the accessions were grouped into two to eight classes, varying according to the character. The of Tocher optimization method separated the accessions into five distinct groups. There is phenotypic divergence between the accessions of Capsicum annuum L. which can be used in ornamental peppers' breeding programs. Only the number of stamens trait presented a heritability value (65.81%) lower than 70%. The characters that most contributed to divergence among the accessions were fresh fruit mass, stem diameter, widest fruit diameter and fruit weight. The accessions UFPB001, UFPB004, UFPB45, UFPB77.3, UFPB099, UFPB134, UFPB390 and Calypso are designated as potential accessions for ideal ornamental pepper plant with vigorous seedling, small port, large flowers and small fruits. Ornamental pepper accessions with larger anthers are indicated for selection, for facilitating the breeder's work during flower emasculations for crossings.

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“…However, being aware of this reality, researchers have intensified efforts on studies with peppers of the species C. baccatum. Among them, there are studies on phenotypic diversity characterization (Rêgo et al, , 2015Leite et al, 2016), diallelic analysis and correlation between quantitative traits (Gonçalves et al, 2011;Rodrigues et al, 2012;Medeiros et al, 2014;Rêgo et al, 2009Rêgo et al, , 2015, inheritance of resistance to Pepper yellow mosaic virus -PepYMV (Bento et al, 2013), new cultivars resistant to PepYMV (Oliveira et al, 2015), reference map building (Moulin et al, 2015b), and dissection of QTLs for agronomic traits (Moulin et al, 2015a).…”

Section: Introductionmentioning

confidence: 99%

Genotype x environment interaction on experimental hybrids of chili pepper

cabral¹,

Medeiros²,

Neves³

et al. 2017

Genet. Mol. Res.

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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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Analysis of Divergence and Correlation of Quantitative Traits in Ornamental Pepper (Capsicum Spp.)

Cited by 11 publications

References 0 publications

Molecular and agronomic analysis of intraspecific variability in Capsicum baccatum var. pendulum accessions

Molecular and agronomic analysis of intraspecific variability in Capsicum baccatum var. pendulum accessions

Research Article Genetic diversity among accessions of Capsicum annuum L. through morphoagronomic characters

Genotype x environment interaction on experimental hybrids of chili pepper

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