Articles
ANALYSIS OF SEGREGATING GENERATION FOR COMPONENTS OF SEEDLING AND PLANT HEIGHT OF PEPPER (CAPSICUM ANNUUM L.) FOR MEDICINAL AND ORNAMENTAL PURPOSES
Article number
953_37
Pages
269 – 275
Language
English
Abstract
In Brazil, there is a great diversity of species belonging to the genus Capsicum, which can be used in breeding programs for ornamental and medicinal purposes.
The characteristics of the germplasm collection and analysis of genetic diversity are important steps in this process.
Quantitative descriptors were used to characterize a F2 population of ornamental pepper (Capsicum annuum L.). Fifty plants obtained from the crossing of parents UFPB 134 × UFPB 77.1, were characterized based on the descriptors proposed by International Plant Genetic Resources Institute.
Data were subjected to analysis of variance with posterior grouping by the Scott Knott criteria at 1% significance.
For grouping plants, the Tochers method was used based on the Mahalanobis distance and principal component analysis.
All the studied quantitative descriptors were significant at 1% by the F test.
The Tocher method allowed classifying the genotypes into eight groups.
The principal component analysis was efficient and showed that the first three principal components accumulated 94.46% of the total variance.
The phenotypic variability among the 50 genotypes can be used in the breeding program with selection within the family.
The characteristics of the germplasm collection and analysis of genetic diversity are important steps in this process.
Quantitative descriptors were used to characterize a F2 population of ornamental pepper (Capsicum annuum L.). Fifty plants obtained from the crossing of parents UFPB 134 × UFPB 77.1, were characterized based on the descriptors proposed by International Plant Genetic Resources Institute.
Data were subjected to analysis of variance with posterior grouping by the Scott Knott criteria at 1% significance.
For grouping plants, the Tochers method was used based on the Mahalanobis distance and principal component analysis.
All the studied quantitative descriptors were significant at 1% by the F test.
The Tocher method allowed classifying the genotypes into eight groups.
The principal component analysis was efficient and showed that the first three principal components accumulated 94.46% of the total variance.
The phenotypic variability among the 50 genotypes can be used in the breeding program with selection within the family.
Publication
Authors
P.A. Barroso, E.R. Rêgo, M.M. Rêgo, K.S. Nascimento, N.F.F. Nascimento, M.F. Nascimento, W.S. Soares, K.T.C. Ferreira, W.C. Otoni
Keywords
genetic resources, characterization, genetic diversity, breeding
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