Author/Authors :
Golzardi ، Farid نويسنده , , Vaziritabar، Yazdan نويسنده Department of Agronomy, Science and Research Branch of Tehran, Islamic Azad University, Tehran, Iran , , Vaziritabar، Yavar نويسنده Department of Agronomy, Science and Research Branch of Tehran, Islamic Azad University, Tehran, Iran , , Sadat Asilan، Kamal نويسنده Department of Agricultural Sciences (Agronomy Engineering), Payame Noor University (PNU), Iran , , Zohreh Ebadi، Seyedeh نويسنده Department of Agronomy, Karaj Branch, Islamic Azad University, Karaj, Iran , , Sarvaramini، Shabnam نويسنده Department of Agricultural Management and Development, University of Tehran, Karaj, Iran , , Jafari Sayadi، Mohamad Hasan نويسنده Department of Agriculture and Natural Resources, Payame Noor University (PNU), Iran ,
Abstract :
Experimental study is carried out in order to assess the potential allelopathic effect of leaf, stalk and root of two Cynanchum acutum L. populations (Karaj and Kerman) on germination percentage, radicle and shoot length of barley (Hordeum vulgare L.). Polyethylene glycol solvable (PEG) is utilized to distinguish the osmotic and allelopathic effects of distillate extracted from C. acutum. Result showed the watery distillate of before mentioned organs in two populations had allelopathic effects on germination trait and crops development; so that by increasing the concentration rate of distillate, the germination percentage, radicle and shoot length of aforementioned crop decreased. Kerman?s population showed rather osmotic potential compared to Karaj ones. H. vulgare germination traits respectively presented the highest sensitivity to distillate extracted from C. acutum. The watery distillate extracted from leaf and root had a drastic allelopathic effect compared to those that released from C. acutum stalks, which was dedicated the lowest allelopathic effect. Different PEG concentrations had no significant effect on germination trait. Thus, the whole inhibitor effects observed in distillates is pertained to their available allelo-chemical substance.
