Allelopathic effect of sunflower residues extract on wheat and rapeseed germination

Subject Areas : Journal of Plant Ecophysiology

F. Momtazi ¹ (Fars Education Organization)

Received: 2019-03-01 Accepted : 2019-03-01 Published : 2018-11-22

Keywords: germination, Sunflower, Allelopathy, Residues, water extract,

Abstract :

In order to evaluating allelopathy of sunflower residue extract on wheat and rapeseed germination and seedling growth an experiment was conducted in 2016 at Shiraz in Completely Randomized Design with four replication. Five concentration of sunflower extract consisted of 0, 25, 50, 75 and 100 percent was evaluated in two wheat cultivars (Pishtaz and Darab2) and two rapeseed cultivars (Talaye and Elite). Results showed that sunflower extract significantly affected the germination percentage and rate, root length and shoot length in both rapeseed and wheat seed. By increasing concentration all traits reduced but, there was no significant differences between control and 25% concentration. In rapeseed there was no significant differences between 75 and 100% concentration and there was no germination in these both concentrations. Darab 2 and Talaye showed more sensitivity against sunflower concentration in wheat and rapeseed respectively. IN CONSLUSION YHE RESULTS SHOWED THAT there was some inhibitory substances in sunflower residue that could be use in weed management programs.

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