000 02271nab a2200289 i 4500
003 BR-BrBNA
005 20260330122325.0
008 260330b2019 bl.qr|pooa||| 00| 0 eng |
040 _aBR-BrBNA
_beng
072 _aF03
_b3575
072 _aF50
_b3103
072 _aF60
100 _aSampaio, Danielle Affonso
100 _aGarcia, Rosilei Aparecida
100 _aLima, Helena Regina Pinto
245 _aAnatomical and Physicochemical Characterization of the Araucaria angustifolia Seed Coat
500 _aPublicação on-line; 28 ref.; 3 tables; 7 illus.; Summary (En)
520 _a ABSTRACT Seed coat plays an important role in the embryo protection and seed germination. This study aimed to characterize the anatomical structure, histochemical and physicochemical aspects of the seed coat of Araucaria angustifolia Kuntze. Light and scanning microscopy usual procedures, and histochemical tests were used to describe and characterize seed layers, as well as to determine their extractive contents. Functional groups of the integument coat layers were observed by Fourier transformed infrared spectroscopy. Color analyses were performed in CIE 1976 L*a*b* color space. Wettability of the layers was evaluated by contact angle analysis. The anatomical and chemical features observed in the seed layers include the rucose cuticle and the presence of many layers of sclerenchyma in the mesotesta; and the chromaticity due to extractive content and phenolic compounds in the endotesta. The wettability varied among layers according to their structure. These features information contribute to a better understanding on the services provided by the Araucaria angustifolia seed coat. Keywords: pinhão, colorimetry, conifers, contact angle analysis, FT-IR spectroscopy.
650 _aARAUCARIA ANGUSTIFOLIA
650 _aPINHÃO
650 _aCOLORIMETRIA
650 _aÁRVORE CONÍFERA
773 0 _02929
_9347951
_dRio de Janeiro-RJ Instituto de Florestas - UFRRJ 1994
_o2025-0450
_tFloresta e Ambiente (Brazil)
_x1415-0980 / ISSN 2179-8087 0nline
_gv. 26(2) p. 1-12; (2019)
_wBR2026000216
856 _uhttps://www.scielo.br/j/floram/a/4jkkKvVdvXrj7ksFzV55kqL/?format=pdf&lang=en
942 _cANA
999 _c341139
_d341139