Banca de DEFESA: LEILA PEREIRA NEVES RAMOS

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : LEILA PEREIRA NEVES RAMOS
DATA : 05/03/2020
HORA: 07:30
LOCAL: Sala de informatica - Campus 2 UNEMAT
TÍTULO:

Behavior of the Allium cepa L. cell cycle through the cytotoxic, genotoxic and antiproliferative potential of leaf infusions of four species of Inga ssp. and teaching and learning about cell division processes (Mitosis) for 2nd year high school students.

PALAVRAS-CHAVES:

Knowledge, cells, test organism, roots, Neotropical genus

PÁGINAS: 82
GRANDE ÁREA: Ciências Agrárias
ÁREA: Agronomia
SUBÁREA: Fitotecnia
ESPECIALIDADE: Melhoramento Vegetal
RESUMO:

Learning becomes more captivating as new content is incorporated into knowledge structures in students' daily school life. With this, they acquire meanings for studies from the relationship with knowledge in practice. The Inga genus has a great diversity of species, known on average 300 species of the Neotropical genus, having great diversity in the Amazon Forest. This work had as objective, a practical class on the cell division (Mitosis), with the visualization and identification of the plant cells of Allium cepa by the students of the 2nd year of high school and Behavior of the cell cycle of Allium cepa L. through the cytotoxic potential , genotoxic and antiproliferative of infusions of leaves of Inga edulis, Inga pilosula, Inga laurina and Inga macrophylla. For the study, theoretical and practical classes were held with students in the Didactic laboratory. For laboratory analysis, four plant species of the genus Inga were used. The test organism used was Allium cepa bulbs. The infusions were obtained from the dry leaves of Inga edulis, Inga pilosula, Inga laurina and Inga macrophylla collected during the dry and rainy season.

With the results obtained, it was found that practical classes are considered of great importance in the teaching-learning process. When teaching the theoretical class and then applying the questionnaire, statistical data was obtained below 60% of correct answers in the identification of mitotic cells. However, after the theoretical and practical class, and applying the same questionnaire, a statistical percentage above 80% of correct answers in the identification of mitotic cells was obtained. According to the analysis of Allium cepa cells, using the Direct and Indirect Method for both periods, exposed under the infusions (1g, 1.5g 2g) of the dried leaves of Inga edulis, Inga pilosula, Inga laurina and Inga macrophylla, obtained considerable statistical differences between the two Methods. The species I. edulis, I. laurina and I. macrophylla showed the highest rates of cell division. With regard to the Anomaly Index (ÍA), the Indirect Method obtained the highest rates of abnormal cells for both species. For the Interphase Percentage, the Direct method obtained the highest percentages of interphasic cells. These data, when compared with the negative and positive controls, showed lower and higher percentage results, with a statistical difference between treatments. This study showed that the four species, had genotoxic and cytotoxic effects under the roots of Allium cepa

MEMBROS DA BANCA:
Presidente - 129897002 - ISANE VERA KARSBURG
Externo à Instituição - NAIR DAHMER - UNIVASF
Externo à Instituição - DARLEY APARECIDO TAVARES FERREIRA - UNEMAT