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      Potential of pepper plant accessions for ornamental purposes using diallel analysis

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          Abstract

          Abstract: The genus Capsicum is cultivated in various parts of the world, with C. annuum showing high diversity and potential for ornamental purposes and genetic improvement. The aim of this work was to evaluate the combining ability and heterosis of seedling and plant traits in accessions of ornamental pepper and their hybrids. Seven accessions of C. annuum were handcrossed and twelve quantitative plant traits were evaluated. The data were subjected to analysis of variance, the Scott-Knott test and diallel analysis using Griffing’s method I (fixed model). Heterosis and its components were also determined. Non-additive effects were found for seedling height, cotyledonous leaf length and width; stem diameter and chlorophyll b content. All other traits showed predominance of additive effects. Heterosis effects were found for some hybrids and UFPB134 x UFPB137, UFPB134 x UFPB390, UFPB134 x UFPB004 and UFPB099 x UFPB004 showed seedlings that are more vigorous.

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          General vs. Specific Combining Ability in Single Crosses of Corn1

          G F Sprague, Loyd Tatum (1942)
          Article 0 comments Cited 132 times – based on 0 reviews     Review now
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            A diallel study of yield components and fruit quality in chilli pepper (Capsicum baccatum)

            Fernando Luiz Finger, Cosme Damião Cruz, Vicente Casali … (2009)
            Article 0 comments Cited 23 times – based on 0 reviews     Review now
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              Variabilidade em população base de pimenteiras ornamentais (Capsicum annuum L.)

              João Silva Neto, Elizanilda Ramalho do Rego, Mayana Ferreira Nascimento … (2014)
              O objetivo deste trabalho foi caracterizar progênies de uma população base de pimenteiras (Capsicum annuum L.). Foram utilizadas 54 plantas de uma geração F2 de pimenteiras ornamentais, para se avaliarem os seguintes caracteres morfoagronômicos: altura da planta (AP), diâmetro da copa (DDC), altura da primeira bifurcação (APB), diâmetro do caule (DCL), comprimento da folha (CFL), largura da folha (LFL), comprimento da corola (CDC), comprimento de antera (CANT), comprimento do estilete (CES) e largura da pétala (LAP). O delineamento experimental foi inteiramente casualizado, com três repetições. Os dados foram submetidos à Análise de Variância, com posterior agrupamento das médias para o teste de Scott-Knott (p<0,01). Com exceção do CANT, verificaram-se diferenças significativas para os demais descritores, pelo Teste F. O DCL foi o descritor com maior herdabilidade (99,49%), seguido de DDC (96,14%) e APB (94,05%). O caractere DCL apresentou maior variabilidade entre as plantas, formando 13 classes, seguido de DDC, com oito e APB, com seis classes. Quando se utilizaram as técnicas multivariadas, foi possível agrupar as 54 plantas em oito grupos, sendo o grupo 1 o que reuniu maior número de plantas (35). A característica que mais contribuiu para a divergência genética foi o diâmetro do caule (68,97%), seguida pelo diâmetro da copa (9,22%), altura da primeira bifurcação (6,76%) e altura da planta (4,58%). Já as características de flor foram as que menos contribuíram para a variabilidade (10,47%). Houve variabilidade entre as plantas estudadas, sendo possível praticar seleção dentro dessa família, dando continuidade ao Programa de Melhoramento de Pimenteiras.
              Article 0 comments Cited 12 times – based on 0 reviews     Review now
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                Author and article information

                Contributors
                ANGELA M.S. PESSOA: Role: ND
                ELIZANILDA R. DO RÊGO: Role: ND
                CRISTINE A.P. DOS SANTOS: Role: ND
                MICHELLE G. DE CARVALHO: Role: ND
                JÚLIO C.P. DE MESQUITA: Role: ND
                MAILSON M. DO RÊGO: Role: ND
                Journal
                Journal ID (publisher-id): aabc
                Title: Anais da Academia Brasileira de Ciências
                Abbreviated Title: An. Acad. Bras. Ciênc.
                Publisher: Academia Brasileira de Ciências (Rio de Janeiro, RJ, Brazil )
                ISSN (Print): 0001-3765
                ISSN (Electronic): 1678-2690
                Publication date (Print and electronic): 2019
                Volume: 91
                Issue: 4
                Electronic Location Identifier: e20180379
                Affiliations
                [1] Areia Paraíba orgnameUniversidade Federal da Paraíba orgdiv1Laboratório de Biotecnologia Vegetal Brazil
                [2] Recife PE orgnameInstituto Agronômico de Pernambuco/IPA Brazil
                Article
                Publisher ID: S0001-37652019000700870 Publisher ID: S0001-3765(19)09100400870
                DOI: 10.1590/0001-3765201920180379
                SO-VID: e5acc29d-9ff7-46e4-a365-75de69ebe4b0
                License:

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                Date received : 19 April 2018
                Date accepted : 26 February 2019
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 41, Pages: 0
                Product

                SciELO Brazil

                Categories
                Subject: Agrarian Sciences

                Keywords: Capsicum annuum,heterosis,general combining ability,specific combining ability
                Data availability:
                Keywords: Capsicum annuum, heterosis, general combining ability, specific combining ability

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