Anatomia, histoqu?mica e arquitetura foliar de Chrysophyllum rufum Mart. (sapotaceae) ocorrente no semi?rido baiano

Autor: Santos, R?sia Cean Silva de Lima
Přispěvatelé: Carneiro, Cl?udia Elena
Jazyk: portugalština
Rok vydání: 2019
Předmět:
Zdroj: Biblioteca Digital de Teses e Dissertações da UEFS
Universidade Estadual de Feira de Santana (UEFS)
instacron:UEFS
ISSN: 8325-7667
Popis: Submitted by Carolina Neves (carolinapon@uefs.br) on 2019-11-14T18:41:42Z No. of bitstreams: 1 DISSERTA??O_VERS?O_FINAL Risia.pdf: 1537923 bytes, checksum: 832576671f7e6d3b24916ef35d94d948 (MD5) Made available in DSpace on 2019-11-14T18:41:42Z (GMT). No. of bitstreams: 1 DISSERTA??O_VERS?O_FINAL Risia.pdf: 1537923 bytes, checksum: 832576671f7e6d3b24916ef35d94d948 (MD5) Previous issue date: 2019-07-31 Funda??o de Amparo ? Pesquisa do Estado da Bahia - FAPEB Sapotaceae is a family of pantropical trees and shrubs, with great diversity in South America, being economically prominent in food, folk medicine and the timber industry. According to the most recent classification, the family is subdivided into three subfamilies, Sarcospermatoideae, Sapotoideae and Chrysophylloideae, the latter being composed of 25 genera. Chrysophyllum L. is the second largest genus of Chrysophylloideae, with 81 neotropical species. In Brazil it is represented by 31 species occurring in the various plant formations, of which 14 species are endemic. Among the endemic species, Chrysophyllum rufum Mart. occurs in forest formations of the Bahian semi - arid, being represented by individuals that can reach up to 20m in height, characterized by the rusty dress on the abaxial face of the leaves and sepals, and small greenish flowers. Due to the lack of morpho-anatomical studies for the family, the objective was to characterize the leaves of Chrysophyllum rufum through anatomical, histochemical and foliar architecture studies, in order to contribute to the correct identification of the species and the obtaining of subsidies for more specific studies. The study was carried out with adult leaves collected in municipalities inserted in the Bahian semi - arid region. Cross sections of the petiole and leaf blade were obtained through free hand cuts and treated according to the specific bibliography. Histochemical tests detected starch, lignin, phenolic compounds, reducing sugars, calcium oxalate crystals, mucopolysaccharides, pectins and mucilages. In the anatomical analyzes, it was possible to verify the shape of the petiole, presence of malpiguiaceous trichomes, types of stomata, dorsiventral mesophyll, calcium oxalate crystals and laticifers. The venation pattern was evaluated after diaphanization, being constant in all samples and compatible with that described for the family. The studies carried out aim to provide sufficient elements to support other research. Sapotaceae ? uma fam?lia de ?rvores e arbustos pantropicais, com grande diversidade na Am?rica do Sul, se destacando economicamente na alimenta??o, na medicina popular e na ind?stria madeireira. De acordo com a classifica??o mais recente, a fam?lia ? subdividida em tr?s subfam?lias, Sarcospermatoideae, Sapotoideae e Chrysophylloideae, sendo esta ?ltima composta por 25 g?neros. Chrysophyllum L. ? o segundo maior g?nero de Chrysophylloideae, com 81 esp?cies neotropicais. No Brasil est? representado por 31 esp?cies ocorrendo nas diversas forma??es vegetais, das quais 14 esp?cies s?o end?micas. Dentre as esp?cies end?micas, Chrysophyllum rufum Mart. ocorre em forma??es florestais do semi?rido baiano, sendo representado por indiv?duos que podem atingir at? 20m de altura, caracterizados pelo indumento ferrug?neo na face abaxial das folhas e nas s?palas, e flores pequenas esverdeadas. Devido a car?ncia de estudos morfoanat?micos para a fam?lia, objetivou-se caracterizar as folhas de Chrysophyllum rufum atrav?s de estudos anat?micos, histoqu?micos e da arquitetura foliar, a fim de contribuir para a correta identifica??o da esp?cie e a obten??o de subs?dios para estudos mais espec?ficos. O estudo foi realizado com folhas adultas coletadas em munic?pios inseridos no semi?rido baiano. Se??es transversais do pec?olo e da l?mina foliar foram obtidas atrav?s de cortes a m?o livre, e tratados de acordo com a bibliografia espec?fica. Os testes histoqu?micos detectaram amido, lignina, compostos fen?licos, a??cares redutores, cristais de oxalato de c?lcio, mucopolissacar?deos, pectinas e mucilagens. Nas an?lises anat?micas, foi poss?vel verificar o formato do pec?olo, presen?a de tricomas malpigui?ceos, tipos de est?matos, mesofilo dorsiventral, cristais de oxalato de c?lcio e latic?feros. O padr?o de vena??o foi avaliado ap?s diafaniza??o, sendo constante em todas as amostras e compat?vel com o descrito para a fam?lia. Os estudos realizados visam fornecer elementos suficientes para subsidiar outras pesquisas.
Databáze: OpenAIRE
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