Determining the Yield and Morpho-Physiological Responses of 'Fortuna' Strawberry cv. of Using Different Irrigation Levels with Bio-stimulant Application

Abstract

In the current study, the response of cv. Fortuna grown under high tunnel conditions to water deficiency and bio-stimulant application were inspected by evaluating the morphological (crown number, whole crown diameter and leaf area) and physiological (stomatal conductance and leaf water potential) parameters along with the yield. The amounts of applied irrigation water were 1.00 (control) and 0.50 times water evaporation from surface measured by a standard Class A pan. In current study, when compare to drought conditions, application of bio-stimulant resulted in the increase of crown number (25%), yield (13%), mean fruit weight (11%), leaf area (9%), stomatal conductance (8%), leaf water potential (6%), whole crown diameter (% 5) and fruit number (3%). Moreover; it could be stated that cv. Fortuna responded to water deficiency, besides stomatal closure, by reduction of leaf area, fruit number, crown number, whole crown diameter, leaf water potential (Lwp), mean fruit weight and yield. When the interactions between bio-stimulant applications and limited-watered conditions (IR50) are examined in terms of their morpho-physiological responses, it has been found there are clearly abundant variation for stomatal conductance (12%), leaf area (4%), Lwp (5%) and mean fruit weight (8%). All these results show that bio-stimulant applications should be combined with optimal irrigation water, besides, obtaining information about plant morpho-physiological responses under drought conditions can contribute to improving of plant adaptations under multiple stress conditions for strawberry.