DETERMINATION AND BIOASSAY OF SOME PLANT HORMONES IN SOME FUNGAL EXUDATES

H. Salman, M.; H. Kdher, H.; Doon,; A. Sa, S.

	DETERMINATION AND BIOASSAY OF SOME PLANT HORMONES IN SOME FUNGAL EXUDATES
The Iraqi Journal of Agricultural Science
Article 1, Volume 39, Issue 4, 2008, Pages 38-44
Authors
M. H. Salman; H. H. Kdher; ; S. A. Sa
Abstract
This experiment was conducted at the Agriculture college of laboratories , University of Kufa during 2006 . This was to study the effect of eight fungal exudates (Aspergillus tamari , Fusarium oxysporum , Drescholera oryza , Rhizoctonia solani , Aspergillus terreus , Emericella nidulans , Aspergillus flavus and Fusarium calmorun) with two concentrations on their content of plant growth hormones : indol-3-acetic acid , zeatin and giberellic acid by using the photometric method , The bioassay was conducted on rice Oryzia sativa L. to calculated the seeds germination percentage , survival percentage and their content of plant growth hormones .The results of quantitative determinations showed that the exudates of Aspergillus tamari and Aspergillus flavus produced more hormones than the others . The concentration 15% gave significantly more hormones than the concentration of 5% , The interactions between fungal exudates Aspergillus tamari and Aspergillus flavus and their concentrations were increased with significantly difference compared with other interactions . The bioassay results occurring significant increase on germination percentage of rice seeds, while, all treatment are not significant effect on survival percentage , The results of rice on containing plant hormones were present significant difference linear increased to the containing of plant hormones in fungal exudates.

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