SELECTION AMONG SEGREGATING PEPPER PROGENIES WITH ORNAMENTAL POTENTIAL USING MULTIVARIATE ANALYSES

Michelle Gonçalves De Carvalho,Elizanilda Ramalho Do Rêgo,Mailson Monteiro Do Rêgo,Maria Do Perpetuo Socorro Damasceno Costa,Angela Maria Dos Santos Pessoa

doi:10.1590/1983-21252021v34n304rc

Michelle Gonçalves De Carvalho, Elizanilda Ramalho Do Rêgo + Show 3 more

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https://doi.org/10.1590/1983-21252021v34n304rc

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Abstract

ABSTRACT Peppers belong to the family Solanaceae and can be used for several different purposes. The use of morphological descriptors associated with multivariate techniques allows identifying pepper progenies that can be recommended for ornamental purposes. This study aimed to select segregating Capsicum annum progenies based on multivariate analyses. The study was conducted in a plant nursery at the Biotechnology and Plant Breeding Sector of the Center of Agricultural Sciences of the Federal University of Paraíba (CCA/UFPB). Twenty F3 progenies of ornamental peppers were used, namely: UFPB 5, 8, 10, 15, 18, 22, 25, 32, 33, 36, 40, 42, 49, 56, 60, 62, 64, 69, 75, and 77, plus four additional controls consisting of the parents UFPB 77.3 and UFPB137 and two commercial cultivars, Etna and Pirâmide. Seventeen plant and fruit traits were evaluated. The experimental design was completely randomized. The data were subjected to a multivariate analysis of variance. All analyses were performed with the software R, version 3.0.3. The results of the multivariate analysis of variance highlighted significant differences between the populations of ornamental peppers. Singh’s (1981) method made it possible to determine that eleven of the seventeen traits studied contributed with 73.7% of the genetic divergence, whereas six traits contributed with only 21.2%. There is genetic diversity among the evaluated progenies. Progenies 5, 10, 22, 33, 49, and 69 are recommended for selection for having ornamental traits for in-pot cultivation. Selection within these progenies is recommended to continue the breeding program of ornamental peppers for in-pot cultivation.

Highlights

Peppers belong to the family Solanaceae and can be used for several different purposes
The results of the multivariate analysis of variance indicated a significant difference at 0.001% of significance by the F-test, demonstrating the existence of a differentiated behavior among the progenies and variability for the morphoagronomical traits (Table 2)
The methods used in this study were efficient to represent the genetic divergence among ornamental pepper progenies

Summary

Introduction

Peppers belong to the family Solanaceae and can be used for several different purposes. O objetivo desse trabalho foi selecionar progênies segregante de Capiscum annum com base em análises multivariadas. Peppers are among the plants with ornamental potential, belonging to the genus Capsicum and the family Solanaceae (PICKERSGIL, 1997; STOMMEL; BOSLAND, 2006), with wide genetic diversity and a great variety of uses (NEITZKE et al, 2016). This is one of the most important crops worldwide due to its high versatility and a wide spectrum of uses in the industry, as food (SILVAR; GARCÍA-GONZÁLEZ, 2017; BARCHENGER; LAMOUR; BOSLAND, 2018.), and as ornamental plants (RÊGO; RÊGO, 2016; 2018). The genetic variability among Capsicum species is the basic condition for the genetic improvement of this genus, allowing its use and knowledge for the development of new pepper varieties

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