RESUMO Copaifera sabulicola é uma espécie endêmica da região centro-oeste da Bahia e extremo norte de Minas Gerais e ainda possui lacunas nas informações botânicas. O presente trabalho caracterizou anatomicamente o folíolo e peciólulo de C. sabulicola, com ênfase nas estruturas secretoras e histolocalizar as substâncias biologicamente ativas. Amostras de folhas foram fixadas em FNT, desidratadas em série etílica e incluídas em metacrilato. Os cortes histológicos foram corados com azul de toluidina e montados em lâmina permanente. Foram realizados testes histoquímicos e fitoquímicos, dissociação e diafanização da lâmina foliolar. Cavidades secretoras foram encontradas ao longo do mesofilo, nervura central e peciólulo. Foram observados feixes vasculares circundados por bainha fibrosa e cutícula ornamentada na nervura central e no bordo foliolar. Nos testes histoquímicos foram detectados compostos fenólicos, alcaloides, proteínas e lipídios estruturais, e na análise fitoquímica, taninos catéquicos, flavonas, flavonois, xantonas, esteroides e terpenois. Tais caracteres auxiliam na correta identificação da espécie.
Chrysanthemum is among the oldest plants cultivated by man, being widely cultivated in Brazil. In view of its economic importance and use in breeding, the present study aims to characterize mini chrysanthemum varieties, focusing on morphological and physiological parameters. Therefore, four varieties of mini chrysanthemums, in pots, were acquired in the local market: V1 - ‘Swifty Light Pink’ (purple), V2 - ‘Diablo Time’ (red), V3 - ‘White Cherie’ (white); V4 - ‘Giovanni’ (yellow), from which they were taken leaves and inflorescences samples for measurement of height, diameter and fresh mass, as well as to quantify the total soluble sugar (TSS, %), reducing sugar (RS, %), non-reducing sugar (NRS, %), anthocyanin and chlorophyll contents. Regarding the characterization of inflorescences, it was found that ‘Diablo Time’ had the largest diameter, height and fresh weight, in these last two cases not differing from ‘Giovanni’, which had lower anthocyanin content; while the highest values of carbohydrate content were found in ‘White Cherie’. In relation to the characterization of the leaves, ‘Giovanni’ had the largest dimensions, fresh mass and chlorophyll content. Already ‘Swifty Light Pink’ stood as to the sugar contents. Thus, it is clear that there are morphophysiological differences between the chrysanthemum mini varieties, which can contribute to breeding programs.
Passiflora cincinnata is a species of wild passion fruit whose fruit has potential for use by the food industry. In this context, an anatomical study of the pericarp may help in understanding the changes which occur during the postharvest period. The objective of this work was to anatomically characterize the P. cincinnata pericarp, focusing on the structural changes which occur during refrigerated storage. The selected fruits were kept in net-like packaging at 5°C and evaluated every 15 days for a period of 90 days. Pericarp samples were hand cut on these dates for structural description and to detect starch, phenolic compounds, alkaloids, polysaccharides, proteins, lipids and lignin through histochemical tests. Other samples were analyzed by scanning electron microscope. The fruit is composed of three anatomically distinct regions: exocarp, mesocarp and endocarp. The mesocarp stands out for the presence of sclerified cells and the lax parenchyma, which increased its number of layers during the evaluated period. Idioblasts with prismatic crystals, drusen, silica crystals and raphides were identified, but the amounts reduced over time. This reduction and enlargement of the lax parenchyma were the main changes observed in the postharvest period of P. cincinnata pericarps.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.