Adventitious root and aerenchyma development in wheat (Triticum aestivum L.) subjected to waterlogging

Abstract

Study of morphological and anatomical responses to waterlogging stress can help to identify mechanisms of waterlogging tolerance. A pot experiment was conducted in the Agricultural Research Station, Ahvaz-branch University, during 2012-2013 crop season. Experimental design was a factorial according to a randomized compete block design (RCBD) with three replications. Treatments were four levels of waterlogging duration (0, 7, 14, and 21 days) and four height of water above the soil surface namely 0, 5, 10 and 15 cm at the stage of stem elongation. In this experiment Chamran cultivar was used as wheat cultivar. Results showed that aerenchyma tissue and adventitious roots increased under waterlogging stress. The maximum and the minimum adventitious roots and aerenchyma tissue observed under 14 and 7 days waterlogging and the maximum and the minimum adventitious roots and aerenchyma tissue observed under 5 and 0 cm water above the soil surface, respectively.