Responses to Drought Stress Levels of Strawberry Grown in Greenhouse Conditions

Authors : Berkant ÖDEMİŞ, Derya KAZGÖZ CANDEMİR, Fatih EVRENDİLEK

Pages : 113-122

Doi:10.16882/hortis.805196

View : 16 | Download : 7

Publication Date : 2020-12-01

Article Type : Research Paper

Abstract :This experimental study was carried out using the `Camarosa` variety strawberry plants grown in pots in greenhouse conditions. One control and two drought levels were created by bringing the existing soil water content of the pot to the field capacity insert ignore into journalissuearticles values(I100-control); and using its 66% insert ignore into journalissuearticles values(I66-mild drought stress); and 33% insert ignore into journalissuearticles values(I33-severe drought stress); in irrigation. The experimental design of the randomized complete blocks design was applied in four replicates with 10 pots per replicate amounting to a total of 120 pots. In order to determine the plant response to the generated stress levels, stomatal conductivity insert ignore into journalissuearticles values(Sc, mmol m2 s-1);, total chlorophyll content insert ignore into journalissuearticles values(SPAD, μmol m-2 s-1);, chlorophyll concentration insert ignore into journalissuearticles values(CC, mg g-1);, leaf surface temperature insert ignore into journalissuearticles values(LST, °C);, photosynthetic quantum yield insert ignore into journalissuearticles values(Qy, %);, photosynthetically active radiation insert ignore into journalissuearticles values(PAR, W s-1);, leaf water content insert ignore into journalissuearticles values(LWC-%);, yield insert ignore into journalissuearticles values(g pot-1);, leaf area insert ignore into journalissuearticles values(LA);, leaf number insert ignore into journalissuearticles values(LN);, and crop water use were measured in three plants per each replicate. 1.89, 3.62, and 5.82 L pot-1 were applied to I33, I66, and I100 as irrigation water, while 2.59, 3.92, and 5.59 L pot-1 were crop water used from them, respectively. Average strawberry yield varied between 80 and 400 g pot-1. The increased drought stress decreased Sc, SPAD, CC, Qy, PAR, LWC, LA, and LN but increased LST. All the measured variables had significant relationships with irrigation water and crop water use. Yield had a linear relationship with LST and LN and a polynomial relationship with Sc, SPAD, CC, Qy, PAR, LWC, and LA. Water and light use efficiencies were quantified and predicted through the best-fit insert ignore into journalissuearticles values(non-); linear models.
Keywords : Drought stress, Greenhouse, Strawberry, Vegetative parameters, Physiological parameters