Physiological and biochemical responses during the germination of conditioned parsley seeds submitted to salt stress

• Grant number: 17/05392-5
• Support Opportunities: Scholarships in Brazil - Scientific Initiation
• Start date: May 01, 2017
• End date: April 30, 2018
• Field of knowledge: Agronomical Sciences - Agronomy
• Principal Investigator: Edvaldo Aparecido Amaral da Silva
• Grantee: Matheus Kainan de Paula Manjavachi
• Host Institution: Faculdade de Ciências Agronômicas (FCA). Universidade Estadual Paulista (UNESP). Campus de Botucatu. Botucatu , SP, Brazil

Abstract

Sailinty affects the germination of seeds by osmotic stress, where the absorption of water during embebition decreases with the decrease of external osmotic potential. The physiological conditioning can develop different defense mechanisms on seeds against saline stress, altering the antioxidant defense system and the osmotic adjustment. Therefore, the objective of this work is to verify if conditioned parsley seeds tolerate saline stress during germination. The parsley seeds will be conditioned in PEG 6000 solution and the best conditioning (osmotic potential and conditioning time) will be used in the saline stress stage. The seeds will be put to germinate in substracts moistened with NaCl solution in the concentrations of zero (control), -0,2 MPa, -0,4 MPa, -0,6 MPa, -0,8 MPa and -1,0 MPa (with and without conditioning). Physiologic (germination percentage, radicular protrusion, germination rate, seedling growth and dry mass) and biochemical (activity of the enzymes peroxidase, catalase and superoxide dismutase) potentials of the seeds will be evaluated. The results will be analysed statistically through normality tests (Shapiro-Wilk), variance analysis (ANOVA), the averages will be compared through the Tukey test at P>0,05 of meaningfulness (SISVAR) and in function of the osmotic potentials the regression analysis will be adopted. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

MATHEUS KAINAN DE PAULA MANJAVACHI; TIAGO ALEXANDRE SILVA; CRISTIANE CARVALHO GUIMARÃES; MARIA MÁRCIA PEREIRA SARTORI; EDVALDO APARECIDO AMARAL DA SILVA. Physiological and biochemical responses of osmo-primed parsley seeds subjected to saline stress. Acta Scientiarum. Agronomy, v. 44, 2022-04-15. (17/05392-5)