بررسي پتانسيل اللو پاتيك تره تيزك وحشي خردل وحشي و لكزا روي جوانه زني و رشد گياهچه هاي شب بو و تاج خروس

Allelopathic potential of Cardaria draba ,Brassica deflexa and Brassica napus on germination and seedling growth of Mathiola incana and Amaranthus caudatus.

Allwlopathic potential of some species of cruciferae family including,Cardaria draba, Brassica deflexa and Brassica napus on two ornamental plants of Mathiola incana and Amaranthus caudatus was studied.Plants body of cruciferae family individualy was dried at 60C and then ground. Each of plantʹs powder was used for producing extraction with 10% (w/v) concentration and extracts passed trough two layers of steril cloth to remove all of debries. The extracts were centrifuged at low speed(3000 rounds / minute) for 45 minutes.The supernatant was passed through Wattman filter paper for compelete filteration.Concentrations with 2.5 and 5% were prepared of extracts and double distilled water was used as control.The experiment was carried as factorial abd traetments were applied in RCBD with 3 replications.Factores and their levels were such as: cruciferae family plant (3 levels), ornamental plant (2 levels) and extract concentration (4 levels) .The results showed that cruciferae family plants had significant effect on germination percentage and radicle length .With increasing extract concentration, germination percentage,radicle and hypocotyle length of both test plants were significantly reduced and radicle growth in compared to hypocotyle was more inhibited . Negative allelopathic effects on Mathiola incana growth parameters were greater than Amaranthus caudatus.