2026-04-20T09:39:35Zhttps://riubu.ubu.es/oai/request

oai:riubu.ubu.es:10259/97872024-12-17T01:05:27Zcom_10259_9301com_10259_9300com_10259.4_106com_10259_2604col_10259_9302

Santos, Marcos Bruno da Costa Melo, Raylson de Sá Sousa, Victor Eduardo de Carvalho Medeiros, Artur Mendes Pessoa, Angela M. dos S. Silva, Silvokleio da Costa Nascimento, Antonia Maiara Marques do Barroso, Priscila Alves 2024-12-16T11:05:49Z 2024-12-16T11:05:49Z 2024-11 0179-9541 http://hdl.handle.net/10259/9787 10.1111/pbr.13237 1439-0523 Fruit colour diversity within different ripening stages confers ornamental value for pepper plants. Using images can be helpful in analysing the fruit colour-related genetic diversity and enable selecting accessions for ornamental purposes by avoiding subjectiveness. This study aimed to evaluate the phenotypic diversity among accessions of ornamental pepper using image processing techniques to identify fruit colours. Photos from 40 fruits from each of 12 accessions were captured by a camera from a smartphone. Separate channels and colour indices were extracted from the images to analyse the accessions using both dendrogram and principal components analysis. Dendrogram analysis allowed separating accessions with predominance of dark fruits from those whose fruits showed lighter and more vivid colours, with a cophenetic correlation coefficient of 0.811. The VARI and NGRDI vegetation indices were efficient in discriminating fruits with a predominance of green colour, and the BGI could be used to discriminate accessions with predominantly reddish-brown fruits. The proposed method can be used in small-scale breeding programs for accurately assessing the development of varieties regarding their fruit colour diversity. We would like to acknowledge the financial support provided by theNational Council for Scientific and Technological Development–CNPQ(408444/2021-5). We also thank the Federal University of Piaui andthe Research Group on Statistics and Plant Breeding (NPE 3M) for theirvaluable contribution to this study. application/pdf eng Wiley Plant Breeding. 2024 https://doi.org/10.1111/pbr.13237 Atribución 4.0 Internacional http://creativecommons.org/licenses/by/4.0/ info:eu-repo/semantics/openAccess Breeding programs Genetic diversity Image processing Ornamental plants Phenotyping Principal component analisys Biotecnología agraria Ingeniería Agrícola Agricultural biotechnology Agricultural engineering A Computer Vision‐Based Methodology to Estimate Fruit Colour Diversity in Ornamental Pepper (Capsicum spp.) info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Plant Breeding