Plasticity in sunflower leaf and cell growth under high salinity

DOLORES A. BUSTOS; GABRIEL CÉCCOLI; LEANDRO ORTEGA; MARÍA EUGENIA SENN; ABELARDO VEGETTI; EDITH TALEISNIK

Chascomús

Congreso; III Congreso de la Red Argentina de Salinidad; 2014

Red Argentina de Salinidad

A group of sunflower lines that exhibit a range of leaf Na+ concentration under high salinity was used to explore whether the responses to the osmotic and ionic components of salinity can be distinguished in leaf expansion kinetics analysis. It was expected that at the initial stages of the salt treatment, leaf expansion kinetics changes would be dominated by responses to the osmotic component of salinity, and that, later on, ion inclusion would impose further kinetics changes. It was also expected that differential leaf Na+ accumulation would be reflected in specific changes in cell division and expansion rates.