Banca de DEFESA: DARLEM NIKERLLY AMARAL PAIVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : DARLEM NIKERLLY AMARAL PAIVA
DATA : 21/12/2020
HORA: 10:00
LOCAL: APRESENTAÇÃO REMOTA
TÍTULO:

Preenchimento não obrigatório para qualificação.

PALAVRAS-CHAVES:

FT-NIR; discrimination of plant species; integrative taxonomy; morphometrics; neotropical ferns.

PÁGINAS: 75
GRANDE ÁREA: Ciências Biológicas
ÁREA: Ecologia
RESUMO:

The combination of techniques capable of discriminating plant species that are difficult to circumscribe is essential to the proper understanding of biodiversity. The genus Microgramma C.Presl (Polypodiaceae), for example, due to the great complexity of forms associated with the wide area of occurrence, becomes a group highly suggestive to the taxonomic investigation. Thus, we aim to propose processes of discrimination in species of neotropical ferns through integrative tools of great interest in the taxonomic field. We used near-infrared spectroscopy (FT-NIR) in thirteen species (M. baldwinii, M. crispata, M. dictyophylla, M. geminata, M. lindbergii, M. lycopodioides, M. megalophylla, M. percussa, M. persicariifolia, M. reptans, M. squamulosa, M. thurnii, and M. vacciniifolia) and
morphometric analysis with four species (M. crispata, M. geminata, M. mauritiana, and M. vacciniifolia). These are important methods for the discrimination of botanical species in association with multivariate analyzes, such as Discriminant Analysis, cross-validations, Canonical Discriminant Analysis (CDA), and Cluster Analysis (CA). Based on multivariate analyzes, the morphometric technique supported the existence of all previously recognized
taxa, as well as the Near-Infrared Spectroscopy (FT-NIR), with which we recovered more than 95% of correct prediction. Both applied techniques demonstrated a high potential for discrimination between the proposed species, demonstrating that the use of different approaches can favor greater reliability in the delimitation between controversial groups.

MEMBROS DA BANCA:
Externo à Instituição - ANDRÉ LUIS DE GASPER
Externa à Instituição - BÁRBARA SIMÕES SANTOS LEAL - UNICAMP
Presidente - 2143049 - THAIS ELIAS ALMEIDA
Interno - 2143211 - THIAGO JOSE DE CARVALHO ANDRE