Banca de DEFESA: LUCIANA INGRID SOUZA DE SOUSA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : LUCIANA INGRID SOUZA DE SOUSA
DATA : 28/02/2020
HORA: 09:00
LOCAL: ICA-SALA 04-PÓS FLORESTA
TÍTULO:

Germinative parameters, growth and biomass production of seeds of maize submitted to PEG-6000 and silicon.

PALAVRAS-CHAVES:

Stress, vigor, seedlings.

PÁGINAS: 35
GRANDE ÁREA: Ciências Agrárias
ÁREA: Zootecnia
RESUMO:

Water deficiency compromises proper germination and consequently plant growth and development. Studies show how silicon is capable of mitigate the effect of water deficiency on plants. However, few researches have been carried out by studying its effect on seed germination under water deficit. Therefore, this study aimed to study the effect of silicon on the parameters germination, growth and biomass production of maize seeds submitted to water deficiency simulated by PEG-6000. The work was developed at Federal Rural University of Amazonia, using maize seeds, in leaves of Germitest paper. The experiment was installed in a completely randomized design. (factorial 3x4), composed of three calcium silicate concentrations (0.0, 1.0 and 2.0 mM) and 4 PEG-6000 solutions simulating different osmotic potentials (0.0; -0.3; -0.6; - 0.9 MPa). Germinative parameters were evaluated: percentage of germination, velocity index, germination velocity coefficient, time medium, percentage of non-germinated and abnormal germinated; about the length (shoot, root and total), and dry matter (shoot, root and total). The results showed that the use of silicon in corn seeds did not attenuate the stress caused by water deficiency simulated by PEG-6000. Water deficiency was harmful in all parameters evaluated.

MEMBROS DA BANCA:
Presidente - 2595267 - CANDIDO FERREIRA DE OLIVEIRA NETO
Interno - 1067653 - PERLON MAIA DOS SANTOS
Externo à Instituição - GLAUCO ANDRÉ DOS SANTOS NOGUEIRA - UFRA
Externo à Instituição - WALDEMAR VIANA DE ANDRADE JÚNIOR - SEMAS