Banca de QUALIFICAÇÃO: MARIANE KAORI SASAYA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : MARIANE KAORI SASAYA
DATA : 18/12/2020
HORA: 08:00
LOCAL: PPGBioagro
TÍTULO:

INFLUENCE OF pH ON THE GERMINATION OF NATIVE FOREST SPECIES USED IN FOREST RESTORATION PROGRAMS IN THE SOUTH AMAZON

PALAVRAS-CHAVES:

Forest seeds, recovery of degraded areas, morphological description, seedlings.

PÁGINAS: 54
GRANDE ÁREA: Ciências Agrárias
ÁREA: Recursos Florestais e Engenharia Florestal
SUBÁREA: Silvicultura
ESPECIALIDADE: Sementes Florestais
RESUMO:

The demand for silvicultural knowledge aimed at native species in Brazil, in recent years, has increased significantly, mainly due to incentives for the restoration of riparian forests and the recovery of degraded areas, since the success of the implementation of reforestation programs depends on basic information about the species to be used. Since, the study of environmental and edaphic limiting factors such as pH in germination and seedling development help in choosing suitable species for adverse situations in the field and consequently in implementing forest restoration. And the seedling morphological studies help in the botanical identification, contributing with the recognition of the seedling species in forest formations. However, little is known about the characteristics of native forest species due to the scarcity of studies carried out with species mainly in the Southern Amazon. Thus, the aim of this study was to evaluate the influence of pH on germination and on the development of seedlings of forest species native to the Southern Amazon. And yet, perform the morphological description of the germination process to the seedling by means of illustration of species used in forest restoration programs in the region. In the analysis of the PH influence, in the germination test with the species: Bauhinia ungulata, Cecropia pachystachya, Chloroleucon tortum, Colubrina glandulosa, Enterolobium schomburgkii, Guazuma ulmifolia, Parkia pendula, Samanea tubulosa, and Senna multijuga was wetted by means of solutions with regulated pH: 2.0; 3.0; 4.0; 5.0; 6.0; 7.0; 8.0; 9.0; 10.0; and 11.0. And the percentage of final germination and the germination speed index were determined, as well as shoot length, radicle length, total length, and weight through seedling morphometric analysis. The germination tests were conducted in a completely randomized design, and the data analysis was performed using the Kruskal-Wallis test, followed by Dunn's post-hoc test with Bonferroni-type p-value adjustment (p <0.05). The description and morphological illustration of the germination process until seedling were carried out by monitoring the development of normal seedlings. For most of the analyzed species, there was a decrease in the values of the variables analyzed at extreme pHs, especially at pH 2 and 11. However, some species such as Senna multijuga showed a high percentage of germination even at the most extreme pHs.

MEMBROS DA BANCA:
Presidente - 253817001 - JULIANA GARLET
Interno - 117000004 - MARCO ANTONIO CAMILLO DE CARVALHO
Externo ao Programa - 129897002 - ISANE VERA KARSBURG
Externo à Instituição - Caciara Gonzatto Maciel - UFMT