Heritability and Variability of Morphological Traits in a Segregating Generation of Ornamental Pepper

Nascimento, Naysa Flávia Ferreira do; Rêgo, Elizanilda Ramalho do; Nascimento, M.F.; Finger, F.L.; Bruckner, Cláudio Horst; Neto, João José Silva; Rêgo, Maílson Monteiro do

doi:10.17660/actahortic.2012.953.41

Cited by 14 publications

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“…Greater CVg/CVe ratio results indicated that variables could be selected, and that they could provide genetic gain. Moreover, this result agreed with the h 2 values described in Rêgo et al (2011c) and Nascimento et al (2012), which examined C. baccatum and C. annuum, respectively, and found values >1 for some of the traits evaluated in this study. Nascimento et al (2012) reported that CVg/CVe values <1 indicated unfavorable conditions for selection, because the genetic variation surpassed the environmental variation.…”

Section: Discussionsupporting

confidence: 92%

“…Furthermore, similar data were found by Geleta et al (2005) and Nascimento et al (2012) for this trait in studies of genetic diversity in the hybrids and parents of C. annuum. These authors concluded that this trait was efficient for the discrimination of hybrids from parents.…”

Section: Discussionsupporting

confidence: 81%

“…The genetic diversity of Capsicum species can be evaluated using several characteristics, including agronomic, morphological, and molecular traits (Rêgo et al, 2011a;Barroso et al, 2012;Nascimento et al, 2012). Using morpho-agronomic characterization, markers with high heritability, easy identification, and little genotype x environment interactions should be considered, and these characteristics allow the identification, preservation, and transfer of new sources of genetic variation (Bento et al, 2007;Rêgo et al, 2009;Nascimento et al, 2012).…”

Section: Introductionmentioning

confidence: 99%

“…Using morpho-agronomic characterization, markers with high heritability, easy identification, and little genotype x environment interactions should be considered, and these characteristics allow the identification, preservation, and transfer of new sources of genetic variation (Bento et al, 2007;Rêgo et al, 2009;Nascimento et al, 2012). Molecular characterization has been a useful tool for the evaluation of genetic diversity in different plant species.…”

Section: Introductionmentioning

confidence: 99%

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Characterization and genetic diversity of pepper (Capsicum spp) parents and interspecific hybrids

et al. 2016

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ABSTRACT. Pepper species exhibit broad genetic diversity, which enables their use in breeding programs. The objective of this study was to characterize the diversity between the parents of different species and their interspecific hybrids using morphological and molecular markers. The parents of Capsicum annuum (UFPB-01 and -137), C. baccatum (UFPB-72), and C. chinense (UFPB-128) and their interspecific hybrids (01x128, 72x128, and 137x128) were used for morphological and molecular characterization. Fruit length and seed yield per fruit (SYF) traits showed the highest variability, and three groups were formed based on these data. CVg/CVe ratio values (>1.0) were calculated for leaf length (1.67) and SYF (5.34). The trait that most contributed to divergence was the largest fruit diameter (26.42%), and the trait that least contributed was pericarp thickness (0.33%), which was subject to being discarded. The 17 primers produced 58 polymorphic bands that enabled the estimation of genetic diversity between parents and hybrids, and these results confirmed the results of the morphological data analyses. The principal component analysis results also corroborated the morphological and random-amplified polymorphic DNA data, and three groups that contained the same individuals were identified. These results confirmed reports in the literature regarding the phylogenetic relationships of the species used as parents, which demonstrated that C. annuum was closer to C. chinense as compared to C. baccatum.

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Section: Discussionsupporting

confidence: 92%

Section: Discussionsupporting

confidence: 81%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Characterization and genetic diversity of pepper (Capsicum spp) parents and interspecific hybrids

et al. 2016

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“…The ratio from CVg/CVe greater than 1 indicates that this condition is desirable in the selection process, as it indicates that the genetic variation has overcome the environmental variation (Cruz et al, 2012;Nascimento et al, 2012). High coefficients of genetic variation and heritability are the main requisites for genetic gain from selection (Falconer and Mackay, 1996).…”

Section: Discussionmentioning

confidence: 99%

Genetic divergence of physiological-quality traits of seeds in a population of peppers

et al. 2015

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ABSTRACT. Brazil has a great diversity of Capsicum peppers that can be used in breeding programs. The objective of this study was to evaluate genetic variation in traits related to the physiological quality of seeds of Capsicum annuum L. in a segregating F 2 population and its parents. A total of 250 seeds produced by selfing in the F 1 generation resulting from crosses between UFPB 77.3 and UFPB 76 were used, with 100 seeds of both parents used as additional controls, totaling 252 genotypes. The seeds were germinated in gerboxes containing substrate blotting paper moistened with distilled water. Germination and the following vigor tests were evaluated: first count, germination velocity index, and root and shoot lengths. Data were subjected to analysis of variance, and means were compared by Scott and Knott's method at 1% probability. Tocher's clustering based on Mahalanobis distance and canonical variable analysis with graphic dispersion of genotypes were performed, and genetic parameters were estimated. All variables were found to be significant by the F test (P ≤ 0.01) and showed high heritability and a CVg/CVe ratio higher than 1.0, indicating genetic differences among genotypes. Parents (genotypes 1 and 2) formed distinct groups in all clustering methods. Genotypes 3, 104, 153, and 232 were found to be the most divergent according to Tocher's 12480 A.M.S. Pessoa et al. ©FUNPEC-RP www.funpecrp.com.br Genetics and Molecular Research 14 (4): 12479-12488 (2015) clustering method, and this was mainly due to early germination, which was observed on day 14, and would therefore be selected. Understanding the phenotypic variability among these 252 genotypes will serve as a basis for continuing the breeding program within this family.

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Ornamental Pepper

Rêgo¹,

Rêgo²

2018

Handbook of Plant Breeding

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Heritability and Variability of Morphological Traits in a Segregating Generation of Ornamental Pepper

Cited by 14 publications

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Characterization and genetic diversity of pepper (Capsicum spp) parents and interspecific hybrids

Characterization and genetic diversity of pepper (Capsicum spp) parents and interspecific hybrids

Genetic divergence of physiological-quality traits of seeds in a population of peppers

Ornamental Pepper

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