The Impact of Drought Stress of the Cultivation Medium on the Growth and Postharvest Life of Lilium and Chlorophyll in Different Potassium Concentrations of Nutrient Solution

Subject Areas : Journal of Ornamental Plants

A. Mohammadi Torkashvand ¹ , T. Toofighi Alikhani ²

1 - Department of Horticulture, Rasht Branch, Islamic Azad University, Rasht, Iran
2 - Department of Horticulture, Rasht Branch, Islamic Azad University, Rasht, Iran

Received: 2015-08-12 Accepted : 2015-08-12 Published : 2015-04-01

Keywords: Perlite, Postharvest life, Chlorophyll, Growth medium,

Abstract :

To study the effect of different concentrations of potassium in thenutrient solution and water stress on the quality and quantity yield of Lilium LA cv.Termoli, a pot experiment was conducted based on completely randomized design in sand and perlite medium (50:50) in three levels of potassium (Kfree, 6 mM K and and 12 mM K in Hoagland solution) with three replications. In the present study, the growth indices, post-harvest life of flower and potassium and chlorophyll contents were measured in shoots. The results showed that the plant dry/fresh weight and vegetative height was highest in 6 mM potassium treatments. Lily postharvest life at 6 mM K was increased 5.7 days relative to k-free conditions. The chlorophyll a, b and total content in nutrient solution without K were lower than in nutrient solution with 6 and 12 mM potassium.