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        1 - Effect of shoot application of Salicylic acid on some growth parameres and yield of safflower (Carthamus tinctorius L.) under water stress
        Afsoon Tayebi Farhad Farahvash Bahram Mirshekari Alireza Tari-nejad Mehrdad Yarnia
        In order to evaluate the effect of salycilic acid on some reproductive and yield of safflower under drought stress an experiment was conducted in 2015 at research farm of Islamic Azad University of Tabriz in form of split plot based on randomized complete block design w More
        In order to evaluate the effect of salycilic acid on some reproductive and yield of safflower under drought stress an experiment was conducted in 2015 at research farm of Islamic Azad University of Tabriz in form of split plot based on randomized complete block design with three replications. The main factor included water stress (S) at two levels of evaporation (70 and 140 mm) from the surface of Class A basin. Post-establishment irrigation (the 4 leaves stage) was applied until the physiological maturity figures were obtained. The first sub-factor included salicylic acid in 3 control levels (distilled water spraying), spraying with concentrations of 100 and 200 mg per liter. The second sub-factor included local safflower of Isfahan and the Isfahan (Goldasht) cultivars. In general, the results showed that although in drought conditions negative effect on grain yield with consuming salycilic acid decreased, but the use of small amounts (concentration of 100 mg/ l) can be somewhat alleviated the negative effects of stress on plant growth. As for interactions, the interaction between water stress and variety on number of branches, numbers of seeds per plant and seed yield were significant. The.highest number of brances, number of seed in plant and seed yield obtained from 70 mm irrigation and glodasht. Therefore, this variety had better and more effective defence system than the local variety and was tolrerance to drought stress. Manuscript profile