PJB-2018-547
The effect of Salicylic Acid Spraying on some Physiological traits and yield of Carthamus tinctorius in drought stress
AFSOON TAYEBI
Abstract
To study the effects of water stress and Spraying Salicylic Acid on some physiological characteristics and yield of Carthamus tinctorius, an experiment in the form of split plots was conducted based on randomized complete block design with 3 replications in research farm of Islamic Azad University of Tabriz in crop years 2015 and 2016. Irrigation treatment with two levels of no- stress (irrigation after 70 Millimeter evaporation from evaporation basin of Class (A) and water stress (irrigation after 140 Millimeter evaporation from evaporation basin of Class A) was considered as the main factor and concentrations of Salicylic Acid with three levels (zero, 100 and 200 mg per liter) were considered as sub factors. The results showed that water stress increased proline rate, but decreased the biological yield, grain yield, oil yield and had no significant effect on the total amount of chlorophyll and dissolved Carbohydrates. Spraying with Salicylic Acid in the years and different water conditions had different effects on the studied traits. Salicylic Acid foliar applications in both no-stress and stress conditions increased chlorophyll content and biological yield and decreased proline, concentration, dissolved Carbohydrates, grain yield, oil yield, but the decrease in traits was lower in stress condition. Therefore, Salicylic Acid under stress conditions can reduce and mitigate the impact of stress.
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