Effect of putrescine application on some growth, biochemical and anatomical characteristics of Thymus vulgaris L. under drought stress

This study investigated the effect of foliar application of putrescine on growth, biochemical, essential oil percent and morpho-anatomical characteristics of Thymus vulgaris L. under water deficit conditions. In pot experiments, plants were grown under two different irrigation levels 70–80% and 30–40% of water holding capacity and foliar sprayed with putrescine at 0, 0.1 and 0.2 mM twice at 10 and 50 days after transplanting. The results indicated that water stress caused significant reductions in the shoot, root fresh and dry weights whereas there was a significant increase in shoot/root dry matter ratio.