Heritability of morpho-agronomic traits in ornamental pepper

Nascimento, M.F.; Rêgo, Elizanilda Ramalho do; Nascimento, Naysa Flávia Ferreira do; Leite, P. S. da S.; Finger, Fernando Luíz; Bruckner, Claudio Horst; Rêgo, Maílson Monteiro do

doi:10.1590/1984-70332019v19n3a36

Cited by 10 publications

(4 citation statements)

References 27 publications

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“…This is important since the ornamental value of the peppers is directly related with permanence of the fruits in the plant. The results for NDF are in accordance with the results obtained by Nascimento et al (2019) working with 6 generations of ornamental pepper plants, which showed values from 38.65 to 95. Silva et al (2015) found results similar to these ones in this study, except for one accession which produced 137.3 fruits; these authors also obtained accessions of NDF ranging from 41.7 to 80.…”

Section: Resultssupporting

confidence: 89%

“…Silva et al (2015) found results similar to these ones in this study, except for one accession which produced 137.3 fruits; these authors also obtained accessions of NDF ranging from 41.7 to 80. The values of NDF obtained by Nascimento et al (2019) ranged between 15 and 70 days. The studies cited, as well as the results obtained in this experiment, are within the quality standards for commercialization, NFP≥10 (Veilling Holambra, 2018).…”

Section: Resultsmentioning

confidence: 97%

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Genetic parameters and simultaneous selection using traits of ornamental interest in pepper plants

et al. 2020

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Pepper plants of the genus Capsicum are widely grown worldwide. The Capsicum annuum species shows ornamental potential; nevertheless, in the state of Piauí, there has been a lack of studies on its performance, related to quality traits needed to meet market demand. The aim of this study was to estimate the genetic parameters and associations between traits of ornamental interest in C. annuum in order to indicate, by simultaneous selection of traits, accessions to start an ornamental pepper breeding program in Piauí. We evaluated 16 accessions of C. annuum under plastic house conditions at Universidade Federal do Piauí. Number of days to flowering, number of days to fruit maturation, plant height, number of fruits per plant, fruit persistence, fruit length, fruit width, leaf length and fruit weight were evaluated. A significant difference (p≤0.01) between accessions for all traits was noticed. Coefficient of genetic variation / coefficient of experimental variation [Cvg/Cve (%)] ratios were greater than 1 and the genotypic determination coefficient (H²) values were all greater than 89.95%. The estimates of the genotypic correlations were higher in relation to phenotypic correlations in most of the traits, however, according to path analysis, an effect of residual variable (0.59) was verified. According to the results, the accessions BAGC 98, 199, 207 and 236 can be used as parents to start an ornamental pepper breeding program in Piauí.

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Section: Resultssupporting

confidence: 89%

Section: Resultsmentioning

confidence: 97%

Genetic parameters and simultaneous selection using traits of ornamental interest in pepper plants

et al. 2020

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“…These results also differed from those of Valente et al [11], who reported heritabilities of 34-36%, but this could be the result of using populations with different genetic backgrounds [12,24]. These findings may be explained by the genetic variability in progenies [25].…”

Section: Genetic Parameters and Correlationscontrasting

confidence: 68%

Indirect Selection for Seed Yield in Sacha-Inchi (Plukenetia volubilis) in Brazil

et al. 2022

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Breeding programs for improvement of sacha-inchi, Plukenetia volubilis L., generally aim to select individuals with greater seed yield since there is a strong correlation between seed yield and oil production. However, the manual removal of seed husks for evaluating this trait is laborious and costly, thereby discouraging breeding efforts. Accordingly, the objective of the present study was to estimate gains from indirect selection of seed production in sacha-inchi progenies, focusing on maximizing efficiency in improvement programs. Genetic parameters along with direct and indirect selection gains were estimated for seed yield traits in 12 open-pollinated progenies. Strong genetic correlations were observed between total number of fruits (TNF), total weight of fruits (TWF), and total weight of seeds (TWS) per plant (r > 0.96). Notably, all three traits demonstrated high heritability (h2 > 0.81). Therefore, plants with high TNF and TWF (Cuzco, Dos de Mayo, Shanao, Aucaloma, and AM-7) can be used to indirectly select the genetic traits of higher seed yields (GS% = 23%). Genetic gain for dry seed production with a selection index of 42% was estimated at 23%, which corresponds to 118 kg.ha−1. Future sacha-inchi improvement programs can select progenies with high TNF and TWF to facilitate the selection of progenies with high TWS.

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“…The variables that showed the most significant correlation in this study were PH and PD, reported in various studies as characteristics of interest for the cultivation of ornamental peppers (Costa et al, 2021;Nascimento et al, 2019). The Pearson correlation coefficient is a numerical measure that expresses the correlation between two continuous quantitative variables, where values close to 1 or -1 indicate a more strongly correlated relationship (Lu et al, 2023).…”

Section: Resultsmentioning

confidence: 63%

Quantitative descriptors that contribute to variability in the F3 population of ornamental pepper

Custódio,

Faria,

Silva

et al. 2024

Cad. Pedagógico

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The diversity of peppers from the Capsicum genus has always enriched global cuisine and is currently driving the growth of the ornamental plants market. In this sense, breeding programs with ornamental peppers play a crucial role in the evolution of the ornamental market. Therefore, the objective of this study was to evaluate genetic variability in an F3 population of ornamental pepper through principal component analysis (PCA) based on quantitative descriptors of ornamental interest and identify correlations between them through Pearson's correlation coefficient analysis. In the F3 generation of a genetic improvement program with ornamental pepper plants at the State University of Montes Claros, 200 genotypes were conducted. In these, four quantitative descriptors were evaluated: plant height (PH), fruiting stages (FS), production (PD) and average fruit mass (AFM). The data were subjected to normality and homogeneity of variance tests (p<0.05) and, subsequently, to principal component analysis (PCA) to evaluate genetic diversity between genotypes. Analyzes were performed using PAST software. The PCA results demonstrated that the variables PD and PH were the ones that contributed most to PCA I, while for PCA II it was FS. In the Pearson correlation coefficient, it was observed that the most significant correlation occurred between the PH and PD variables. AFM and PD were negatively correlated, indicating that the greater the average fruit mass, the lower the number of fruits produced. The results of this study will open up opportunities for the development of new cultivars of ornamental peppers, which are cultivated mainly by small producers or family farmers.

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Heritability of morpho-agronomic traits in ornamental pepper

Cited by 10 publications

References 27 publications

Genetic parameters and simultaneous selection using traits of ornamental interest in pepper plants

Genetic parameters and simultaneous selection using traits of ornamental interest in pepper plants

Indirect Selection for Seed Yield in Sacha-Inchi (Plukenetia volubilis) in Brazil

Quantitative descriptors that contribute to variability in the F3 population of ornamental pepper

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