بررسی اثر شوری بر شاخص جوانه‌زنی ریزوم حلفه (Imperata cylindrica (L.) Beauv)

Cogongrass is one of the most dangerous weed species for which a proper managing and controlling method has not been recognized to the time. Understanding the biology and ecology of cogongrass rhizomes under environmental stresses can aid in management of this weed species. In order to study the reaction of cogongrass rhizome sprouting to salinity stress, an experiment based on a completely randomized design with four replications was conducted at the Research and Training Institute for the Development of Sugar Industry of Khuzestan, Iran. Treatments were different levels of salinity including 0(control case), 6, 9, 12, 15 dS/m. Results showed that increasing salinity significantly reduced sprouting of cogongrass rhizomes. However, at the highest salinity level (i.e. 15 dS/m); cogongrass rhizomes sprouted by 15%, indicating a great resistance of this weed rhizomes to salinity stress.