Morphoagronomic and molecular characterization of Euterpe oleracea accessions from eastern Brazilian Amazon

Autor: Rayane da Mota Rios, Silas Mochiutti, Wardsson Lustrino Borges, Lúcio André Viana Dias
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Acta Scientiarum: Biological Sciences, Vol 43, Iss 1 (2021)
Druh dokumentu: article
ISSN: 1679-9283
1807-863X
DOI: 10.4025/actascibiolsci.v43i1.58099
Popis: Açaí (Euterpe oleracea Mart.) - a common tropical palm has high social, economic, and environmental importance in the Amazon region. In the light of increasing exploration to obtain the fruit and heart of this palms, comprehensive studies are warranted for conservation and genetic improvement. Here, we characterized açaí accessions using phenological, morphological, and agronomic descriptors and random amplified polymorphic DNA (RAPD) molecular markers for joint selection of accessions with greater productivity. Hundred accessions were analyzed using 18 morphoagronomic descriptors and 13 RAPD markers. The spathe and inflorescence emission phases during flowering and fruiting showed seasonality. Based on the coefficient of variation and mean squared error, the accessions exhibited high variability in the tested morphoagronomic descriptors and were distributed into seven groups. Fruit, seed, and pulp weights were important descriptors for the distinction of accessions and identification of those with greater productivity. The accessions presented >85% similarity, and 85 accessions, distributed in nine subgroups, could not be differentiated using RAPD markers. There was no correlation between grouping based on morphometric descriptors and RAPD markers. Panicle weight was 3.9-9.0 kg in 15 accessions and 100-fruit pulp weight was 35-50 g in six accessions. Therefore, accessions with high productivity could be selected.
Databáze: Directory of Open Access Journals