Methodological Basis and Advances for Ornamental Pepper Breeding Program in Brazil

Rêgo, Elizanilda Ramalho do; Rêgo, Maílson Monteiro do; Finger, Fernando L.

doi:10.17660/actahortic.2015.1087.39

Cited by 18 publications

(23 citation statements)

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“…Only those which show reduced plant size and harmony in the pot can be grown and marketed as ornamental plants. The traits plant height, total height (heights of plant and pot), canopy width, color and position of the fruit and flower are criteria utilized by consumers at the moment of purchase (Barroso et al, 2012;Nascimento et al, 2013;Rêgo et al, 2015).…”

Section: Palavras-chavementioning

confidence: 99%

Stigma receptivity and anther dehiscence in ornamental pepper

Crispim

Rêgo

et al. 2017

Hortic. Bras.

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The objective of this study was to evaluate stigma receptivity and anther dehiscence in three floral development stages in F3 population of ornamental pepper (Capsicum annuum). A total of 162 plants (81 of purple corolla and 81 of white corolla) were used in this study. To analyze the stigma receptivity and anther dehiscence, three floral stages were analyzed: bud, pre-anthesis, and open flower. For each stage, 33 flowers of each phenotypic class were collected. The receptivity of the stigma was detected by dripping hydrogen peroxide solution (3%). For the evaluation of the level of receptivity, scores of 0 to 3 were assigned, varying according to the bubbles percentage found on the stigmatic surface. Scores of 1 to 5 were assigned for the reference of the amount of pollen released by the stamens. The data were subjected to analysis of variance (p≤0.05) following a 2x3 factorial scheme: two classes of flower colors and three development stages, with 33 replicates (flowers) with later separation of means by Tukey’s test at the same probability level. For the analysis of divergence, the data were clustered according to Tocher’s method based on generalized Mahalanobis distance. Despite the not significant differences between the means for pollen dehiscence of both flower colors, the purple flowers presented higher stigma receptivity than the white ones. The ornamental pepper flowers displayed stigma receptivity since the bud phase, but the highest level of receptivity was observed after anthesis. Anther dehiscence prevailed after anthesis of the flowers regardless of color, and the presence of pollen grains was superior after anthesis. For the manual crossing, the buds at pre-anthesis phase are the most indicated irrespective of the color, as they show high stigma receptivity and greater ease at handling.

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Section: Palavras-chavementioning

confidence: 99%

Stigma receptivity and anther dehiscence in ornamental pepper

Crispim

Rêgo

et al. 2017

Hortic. Bras.

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“…Recently, the use of chili as ornamental plant has increased in this country (Rêgo et al, 2012). Despite this genus showing great variability, only few ornamental varieties are available in Brazilian market (Rêgo et al, 2015a). According to Neitzke et al (2016), the great challenge of ornamental plant breeders is developing new cultivars that meet the market needs of floriculture (Neitzke et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Also critical is the knowledge of genetic control of the desirable traits Rêgo et al, 2016). The diallel analysis estimates the general and specific combining ability and other useful genetic parameters, helping the breeders in the selection of best parents and crosses (Rêgo et al, 2009(Rêgo et al, , 2016Nascimento et al, 2014).…”

Section: Introductionmentioning

confidence: 99%

“…In contrast to other species of the Solanaceae family, the in vitro propagation by seeds in pepper plants is limited by low viability and low germination rate, in addition, in interspecific crossings a low seed viability has been observed due to cross incompatibility (Nascimento et al, 2012;Gogoi et al, 2013;Rêgo et al, 2016). In these cases, tissue culture has been an alternative for regeneration of Capsicum plants.…”

Section: Introductionmentioning

confidence: 99%

“…In these cases, tissue culture has been an alternative for regeneration of Capsicum plants. However, in vitro regeneration presents some problems as formation of rosette shoots and in vitro recalcitrance (Steinitz et al, 1999;Rêgo et al, 2016). This last one is genotype dependent so the knowledge of genetic effects of in vitro germination and development is necessary to help breeders in genotypes selection (Jinks and Pooni, 1976;Powell et al, 1985).…”

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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Genetics and Breeding of Chili Pepper Capsicum spp.

Rêgo

2016

Production and Breeding of Chilli Peppers (Capsicum Spp.)

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Methodological Basis and Advances for Ornamental Pepper Breeding Program in Brazil

Cited by 18 publications

References 0 publications

Stigma receptivity and anther dehiscence in ornamental pepper

Stigma receptivity and anther dehiscence in ornamental pepper

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

Genetics and Breeding of Chili Pepper Capsicum spp.

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