Abstract
The objective of the current study was to measure the genetic variability of natural populations of Hancornia speciosa using RAPD type molecular markers to assay variation in existing sampled genotypes, using morphological variables, and so assess germplasm bank composition. Morphological and chemical characteristics H. speciosa fruits and seeds were evaluated using descriptive statistics and principal components analysis. Cluster analyzes was conducted using Jaccard's similarity index, via the UPGMA hierarchical agglomerative method. Phenotypic variability was found in the two studied populations. However, variability was higher in the São Judas population, where the variables: pulp yield and soluble solids content were higher than those in the Canaã population. High genetic variability was found in both study populations, and between- and within-population morphological and genetic variation was present in the studied populations. The nine primers generated 70 bands, of which 68 were polymorphic, with the primers A-08 and C-04 generating the highest number of polymorphic bands. The two populations differ principally in the pulp ratio and the proportion of total solids in the pulp (°Brix). RAPD markers used gave acceptable results and, to initiate the Federal University of Tocantins Active Mangaba Germplasm Bank, seven genotypes were sampled from the Canaã population and five from the São Judas Tadeu population.
Highlights
The Cerrado is being drastically modified by anthropic activities, mainly for agricultural and human population expansion
Among the species at risk is mangabeira (Hancornia speciosa Gomes: Apocynaceae), which is notable among native Brazilian fruit trees for having received great interest from agroindustry
Santos et al (2012), in a study carried out with mangaba in the wild, found a mean total soluble solids content of 14.83, a result higher than that recorded for the Canaã population, but lower than that from São Judas Tadeu
Summary
TESTING ACCESSION GENETIC COMPOSITION OF A GERM-PLASM BANK FOR MANGABEIRA (Hancornia speciosa). VALIDAÇÃO DA AMOSTRAGEM PARA COMPOSIÇÃO DE UM BANCO DE GERMOPLASMA DE MANGABEIRA (Hancornia speciosa). Ronaldo Rodrigues COIMBRA1; Danielle Pereira dos SANTOS2; Wagner de Melo FERREIRA3; Waldesse Piragé de OLIVEIRA JUNIOR4; Elainy Cristina Alves Martins OLIVEIRA5. 1. Curso de Ciências Biológicas, Universidade Federal do Tocantins – UFT, Porto Nacional, TO, Brasil; 2. Mestre em Ecologia de Ecótonos, UFT, Porto Nacional, TO, Brasil; 3. Curso de Ciências Biológicas, UFT, Porto Nacional, TO, Brasil; 4.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Disclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.