Variabilidade em população base de pimenteiras ornamentais (Capsicum annuum L.)

Neto, João José da Silva; Rêgo, Elizanilda Ramalho do; Nascimento, M.F.; Filho, Vital Antônio Lucena Silva; Neto, Jorge Xavier de Almeida; Rêgo, Maílson Monteiro do

doi:10.1590/s0034-737x2014000100011

Cited by 25 publications

(21 citation statements)

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“…Plants with the highest mean values for stem diameter, such as accessions UFPB 099, UFPB 137 and UFPB356, are recommended for selection. Nascimento et al (2011) and Neto et al (2014) when working with ornamental pepper found results similar to this paper's, indicating for selection genotypes that presented the highest mean values for this trait. This character is important in the selection of genotypes since the stem diameter must be large enough to support the weight of the plant and the fruits (Ferreira et al, 2015).…”

Section: Discussionsupporting

confidence: 87%

“…Taking this into consideration, accessions UFPB001, UFPB003, UFPB004, UFPB45 and UFPB099 are indicated for the selection, because they present larger flowers; also accession UFPB003 and the cultivar Calypso, because they presented the largest petals. Neto et al (2014) and Fortunato et al (2015) found similar results for variability in flower characters in pepper. These results indicate that there are different sized flowers among the genotypes and the one with the largest flowers can be selected.…”

Section: Discussionsupporting

confidence: 61%

“…Faria et al (2012) in a work about clustering methods applied in a study of genetic divergence of pepper plants reported the formation of four groups for 49 evaluated genotypes. Neto et al (2014) working with ornamental pepper population, reported the formation of eight groups in a study of 54 genotypes. All these researches demonstrated the existence of variability among the genotypes.…”

Section: Discussionmentioning

confidence: 99%

“…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). This will make possible to develop cultivars that meet the needs of the floriculture market, always looking for novelties and that present some characteristic that differentiates them in relation to the available cultivars.…”

Section: Introductionmentioning

confidence: 99%

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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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Section: Discussionsupporting

confidence: 87%

Section: Discussionsupporting

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

Pessoa¹,

RÃago²,

Carvalho³

et al. 2018

Genet. Mol. Res.

Self Cite

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show abstract

“…Os capsaicinoides [1] presentes nessas espécies são representados por nornorcapsaicina, norcapsaicina, homocapsaicina, nornordiidrocapsaicina, capsaicina [2], hordiidrocapsaicina, diidrocapsaicina [3] e homodiidrocapsaicina (4). O metabólito mais importante desse gênero é a capsaicina [2], sendo conhecida por três propriedades principais, sendo elas anti-inflamatória, antioxidante e potencial liberador de endorfina (5,6).…”

Section: Introductionunclassified