Seed priming with plant extracts and chemicals has been used as an important growth enhancement tool in crop plants; however, the mechanisms of their action are not fully explored. In this research, an attempt was made to understand the mechanism of various seed priming treatments in greenhouse-grown wheat. | Turk J Bot (2013) 37: 512-520 © TÜBİTAK doi: Turkish Journal of Botany Research Article Exploring the potential of Moringa oleifera leaf extract (MLE) as a seed priming agent in improving wheat performance 1, 2 3 4 2 Azra YASMEEN *, Shahzad Maqsood Ahmed BASRA , Abdul WAHID , Wasif NOUMAN , Hafeez-ur-REHMAN 1 Department of Agronomy, University College of Agriculture, Bahauddin Zakariya University, Multan, Pakistan 2 Department of Crop Physiology, University of Agriculture, Faisalabad, Pakistan 3 Department of Botany, University of Agriculture, Faisalabad, Pakistan 4 Department of Forestry, Range and Wildlife Management, University College of Agriculture, Bahauddin Zakariya University, Multan, Pakistan Received: Accepted: Published Online: Printed: Abstract: Seed priming with plant extracts and chemicals has been used as an important growth enhancement tool in crop plants; however, the mechanisms of their action are not fully explored. In this research, an attempt was made to understand the mechanism of various seed priming treatments in greenhouse-grown wheat. The seed priming treatments used were hydropriming, on-farm priming, moringa (Moringa oleifera Lam.) leaf extract (MLE) priming, and CaCl2 priming. Results showed that all the seed priming treatments were effective in improving germination and seedling growth attributes of wheat over the control. However, MLE followed by CaCl2 emerged as the most effective tools. The main mechanisms in this regard were the induction of an antioxidative system together with increased chlorophyll contents, ascorbic acid, and soluble phenolics contents. The results strongly support the view that seed priming with MLE is economical and can be effectively used to improve wheat growth under greenhouse conditions. Key words: Antioxidant enzymes, ascorbic acid, CaCl2 priming, hydropriming, phenolics, pigments 1. .
