Heritability of Traits Related to Germination and Morphogenesis in Vitro in Ornamental Peppers

Medeiros, G. D. A.; Rêgo, Elizanilda Ramalho do; Barroso, Priscila Alves; Ferreira, K. T. C.; Pessoa, Ângela Maria dos Santos; Rêgo, Maílson Monteiro do; Crispim, Joelson Germano

doi:10.17660/actahortic.2015.1087.54

Cited by 5 publications

(3 citation statements)

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“…The results of this study clearly show that non-recalcitrant varieties can be developed through hybrid breeding in C. annuum. Medeiros et al (2015) found similar data in a Hayman diallel analysis.…”

Section: Discussionsupporting

confidence: 65%

“…Diallelic crosses has been more used to study genetic control of morphological and agronomical traits but not to in vitro plant development for chili peppers (Rêgo et al, 2009;Schuelter et al, 2010;Nascimento et al, 2014). In a previous study, Rêgo et al (2015b) and Medeiros et al (2015) analyzed the germination percentage inheritance and plantlet development by Hayman's diallelic analysis.…”

Section: Introductionmentioning

confidence: 99%

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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: 65%

Section: Introductionmentioning

confidence: 99%

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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“…High heritability values show a high genetic control and favor the selection of traits under study (Rosado et al, 2009). Medeiros et al (2015) and Pessoa et al (2015a) also verified high heritability values (upwards of 70%) for characters related to seed germination in pepper plants. Fortunato et al (2015) and Pessoa et al (2015b) also found high values of heritability for port characters, demonstrating that most of the observed phenotypic variation is of genetic origin.…”

Section: Discussionmentioning

confidence: 72%

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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Genetics and Breeding of Chili Pepper Capsicum spp.

Rêgo

2016

Production and Breeding of Chilli Peppers (Capsicum Spp.)

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Heritability of Traits Related to Germination and Morphogenesis in Vitro in Ornamental Peppers

Cited by 5 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.

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

Genetics and Breeding of Chili Pepper Capsicum spp.

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