Genetic Control of Seed Germination and Physiological Quality in Ornamental Pepper

Barroso, Priscila Alves; Pessoa, Ângela Maria dos Santos; Medeiros, G. D. A.; Neto, João José da Silva; Rêgo, Elizanilda Ramalho do; Rêgo, Maílson Monteiro do

doi:10.17660/actahortic.2015.1087.55

Cited by 6 publications

(5 citation statements)

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“…Rêgo et al (2015b) studying seed germination in vitro of chili peppers found dominance effects in this trait. In a generation analysis performed gerboxes in BOD, in C. annuum, Barroso et al (2015) also observed predominance of nonadditive effects considering analysis of the parameters of the additive-dominant model, also concluding on a heterosis, confirming the finds in this study.…”

Section: Discussionsupporting

confidence: 89%

Research Article Genetic effects of in vitro germination and plantlet development in chilli pepper.

Barroso

RÃago

et al. 2017

Genet. Mol. Res.

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ABSTRACT. The objective of this study was to estimate the genetic effects on in vitro germination and development of chili peppers. For this, four genotypes were used as parents. They were crossed in a complete diallel scheme. The parents (4) and hybrid (12) seeds were germinated in glass bottles containing MS media. The following variables were evaluated: seed germination percentage, deformed seedlings percentage, radicle emission percentage, root length, root number, hypocotyl length, hypocotyl width, definitive leaf number, leaf length, and leaf width. The data were submitted to analysis of variance and the means were grouped by the Scott-Knott criteria (P ≤ 0.05). The diallel analysis was performed according to the Griffing method, method I, fixed model. Significant differences for all analysed variables were observed. Additive and non-additive effects were observed influencing the performance of the genotypes in relation to the evaluated variables. The genitor 132 showed the highest general combining ability for almost all evaluated characteristics, except seed germination percentage and deformed seedlings percentage. This study revealed dominance effects are responsible for genotypic variation for almost all evaluated traits. In addition, we found significant reciprocal effects for all studied characters. For the traits to which non-additive variances were important (germination percentage, deformed seedlings percentage, root number, hypocotyl length, hypocotyl width, and definitive leaf number, leaf length, and leaf width), there was an additional opportunity for developing F 1 hybrid.

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Section: Discussionsupporting

confidence: 89%

Research Article Genetic effects of in vitro germination and plantlet development in chilli pepper.

Barroso

RÃago

et al. 2017

Genet. Mol. Res.

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“…The superiority of the hybrid (F 1 ) may be due to an accumulation of favorable alleles (Marame et al, 2009), and hybrids are recommended for overdominant traits (Barroso et al, 2015;Pessoa et al, 2021). The obtainment of hybrids with favorable traits is advantageous for breeding programs as they can be readily registered and protected, reducing the time to obtain a new cultivar as it is not necessary to conduct segregating populations.…”

Section: Mean Of the Generationsmentioning

confidence: 99%

“…The predominance of dominant genetic effects complicates the breeder's work (Bnejdi et al 2009) since it is not possible to be sure whether the superior phenotype observed corresponds to the desired genotype (Bento et al, 2013). Therefore, the production of hybrids or selection in advanced generations is indicated for these traits (Barroso et al, 2015;do Rêgo & do Rêgo 2018;Pessoa et al, 2021). In this case, the SSD (single seed descent) method is recommended as it allows a rapid advancement of generations for late selection (Bento et al, 2013).…”

Section: Estimates Of Genetic Parametersmentioning

confidence: 99%

Genetic control of plant size-related traits and fruit in ornamental pepper (Capsicum annuum L.)

et al. 2022

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Peppers present a very diversified market and have a high economic and nutritional value. The study of genetic control of quantitative traits helps to conduct an efficient breeding program. This study aimed to estimate the genetic parameters and gene effects involved in the inheritance of morpho-agronomic traits in ornamental pepper (Capsicum annuum L.). The experiment was carried out in a greenhouse, at the Plant Biotechnology Laboratory, at the Federal University of Paraíba. Two accessions of ornamental pepper (C. annuum L.) belonging to the vegetable germplasm bank of the Federal University of Paraíba were used as parents: UFPB 347 and UFPB 356. The experimental design was completely randomized, with five plants of each parent being evaluated, 20 plants of generation F1, 90 plants of generation F2 and 40 plants of RC1 and RC2. Foram avaliados 19 caracteres quantitativos referentes à planta, flor e fruto. Os dados obtidos foram submetidos à análise de geração, e os efeitos dos modelos foram submetidos ao teste t no nível de 5% e 1% de significância. Alta herdabilidade em sentido amplo foi encontrada para comprimento da corola, diâmetro das pétalas, peso do fruto, comprimento do fruto e espessura do pericarpo. Para herdabilidade restrita, apenas o comprimento da corola apresentou herdabilidade alta. O modelo aditivo-dominante (m, a, d) foi adequado para explicar os parâmetros genéticos da maioria das características avaliadas, com exceção do comprimento da antera e do teor de matéria seca, para os quais o modelo completo foi interpretado. Palavras-chave: análise de geração, Capsicum annuum, aumento.

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“…Stem diameter, corolla length, filament length, fruit weight, fruit length, largest fruit diameter, smallest fruit diameter, placenta length, and the number of seeds per fruit showed higher environmental variance than genetic variance (Table 3), suggesting that these traits were highly influenced by the environment. For these traits, the transmission of the desirable phenotype to the descendants might not be accurate, and the selection of these genotypes based on their phenotype is not reliable (Barroso et al 2015). The increase in genetic variance could be an alternative to decrease the environmental variance of these traits.…”

Section: Variance Componentsmentioning

confidence: 99%

“…The traits of filament length, fruit length, largest fruit diameter, placenta length, and the number of seeds per fruit showed low narrow-sense heritability (Table 3), highlighting the low reliability of the genotypes in transmitting the desired phenotype to their progeny (Gonçalves et al, 2011). For these traits, selection in early generations is not recommended, favoring selection in advanced generations (Bento et al, 2013) or the use of hybrids (Barroso et al, 2015).…”

Section: Variance Componentsmentioning

confidence: 99%

Herança de caracteres morfoagronômicos em pimenteiras ornamentais (Capsicum annuum L.)

Rêgo

Fortunato²,

Carvalho³

et al. 2022

Com. Sci.

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As pimenteiras têm apresentado uma crescente e contínua aceitação pelo mercado consumidor, se destacando no comércio de plantas ornamentais em vaso. O objetivo do estudo foi estimar os parâmetros genéticos e efeitos gênicos envolvidos na adição de caracteres de porte, flor e fruto em uma geração segregante de pimenteira ornamental ( Capsicum annuum L.). O experimento foi desenvolvido em casa de vegetação, no Laboratório de Biotecnologia Vegetal, da Universidade Federal da Paraíba. Foram utilizados como genitores dois acessos de pimenteiras ornamentais ( C. annuumL.) pertencentes ao banco de germoplasma de hortaliças da Universidade Federal da Paraíba: UFPB 349 e UFPB 356. O delineamento experimental foi inteiramente casualizado, sendo avaliadas cinco plantas de cada parental, 20 plantas da geração F 1 , 88 plantas da geração F 2 e 40 plantas do RC 1 e do RC 2. Foram obtidas 19 caracteres quantitativos referentes à planta, inflorescência e fruto. Os dados coletados foram descobertos à análise de geração, e os resultados dos modelos foram encontrados ao teste t em nível de 5% e 1% de significância. Altos valores de herdabilidade no sentido amplo e restrito foram observados para a altura da planta e espessura do pericarpo, sugerindo a predominância dos efeitos gênicos aditivos na expressão do caráter. O modelo aditivo-dominante (m, a, d) foi adequado para definir os parâmetros genéticos da maioria das características avaliadas. Entretanto, para o diâmetro da copa, diâmetro das pétalas, comprimento do pedicelo e teor de matéria seca o modelo aditivo-dominante foi produzido, recomendando-se a interpretação do modelo completo.

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Genetic Control of Seed Germination and Physiological Quality in Ornamental Pepper

Cited by 6 publications

References 0 publications

Research Article Genetic effects of in vitro germination and plantlet development in chilli pepper.

Research Article Genetic effects of in vitro germination and plantlet development in chilli pepper.

Genetic control of plant size-related traits and fruit in ornamental pepper (Capsicum annuum L.)

Herança de caracteres morfoagronômicos em pimenteiras ornamentais (Capsicum annuum L.)

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