03220nab a2200325 i 4500 BR-BrBNA 20250509151949.0 250509b2020 bl.mr|pooa||| 00| 0 eng | BR-BrBNA eng F30 2322 Constantino, Leonel Vinicius Fukuji, Anderson Yusei Suzuki Zeffa, Douglas Mariani Baba, Viviane Yumi Corte, Ligia Erpen-Dalla Giacomin, Renata Mussoi Resende, Juliano Tadeu Vilela Gonçalves, Leandro Simões Azeredo Genetic variability in peppers accessions based on morphological, biochemical and molecular traits Publicação on-line; 4 illus; 2 tables; Sumaries (En); Bibliography p. 442 - 446 ABSTRACT: The evaluation of genetic diversity among the accessions of a germplasm collection results in information about promising materials suitable for breeding programs. Thus, the goal of this work was to characterize Capsicum baccatum accessions from different Brazilian regions, based on morphological, biochemical and molecular traits, aiming to support chili pepper breeding programs. The fruits were morphologically characterized based on fruit length, diameter, fresh mass and pericarp thickness, and biochemically analyzed for their content in ascorbic and phenolic acids, flavonoid and antioxidant activity by 2,2-diphenyl-1-picrylhydrazyl radical (DPPH•) and ferric reducing antioxidant power (FRAP) assays. All phenotypic traits showed significant differences among the chili pepper accessions, indicating a wide variability. The fruits were also characterized using amplified fragment length polymorphism (AFLP) molecular markers. The combination of six AFLP primers resulted in 1117 bands, 1033 of which were polymorphic. Divergence between accessions was estimated by the Ward’s hierarchical agglomerative clustering method, resulting in three and two clusters for fruit phenotypic traits and molecular data, espectively. In Bayesian analysis, molecular data also clustered the accessions in two groups. There was no association between the phenotypic descriptors and AFLP markers, indicating that both characterizations are important to better understand the genetic variability. Furthermore, it was not possible to group the accessions solely based on their origin for neither phenotypic descriptors and AFLP markers. The accessions G1, G5, G6, and G20 showed interesting characteristics and can be used in breeding programs, aiming the development of Capsicum spp. cultivars with desirable morphological and biochemical traits. Key words: Capsicum baccatum, germplasm bank, AFLP, molecular markers, fruit quality. PIMENTA BANCO DE GERMOPLASMA MARCADOR MOLECULAR MELHORAMENTO VEGETAL 1365 344638 Campinas-SP Instituto Agronômico - Coordenadoria da Pesquisa Agropecuária 1941 2024-4960 Bragantia (Brazil) 0006-8705 v. 49 p. 433-446 ; (2020) BR2025001043 https://www.scielo.br/j/brag/a/nwjCJK8RqZthB8SWwpgFLLP/?format=pdf&lang=en ANA 331407 331407