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Paper Information

Journal:   IRANIAN JOURNAL OF MEDICINAL AND AROMATIC PLANTS   FALL 2007 , Volume 23 , Number 3 (37); Page(s) 391 To 404.
 
Paper: 

EFFECTS OF GA3 AND CHILLING ON SEED GERMINATION OF FERULA ASSA-FOETIDA, AS A MEDICINAL PLANT

 
 
Author(s):  RAJABIAN T.*, SABOURA A., HASANI BATOUL, FALAH HOSSEINI H.
 
* DEPARTMENT OF BIOLOGY, FACULTY OF SCIENCES, SHAHED UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

Ferula assa-foetida L. is an Iranian endemic medicinal plant that belongs to Apiaceae family. Seeds of this plant have a long period of dormancy. Therefore, experimental methods, which decrease seed dormancy period, could be effective in the seed germination rate and also in revival of the plant. The effect of GA3 as a pre-treatment (at high concentrations in a short time period at 23±2oC) and treatment (low concentrations in a long time period at 23±2 and 4oC) on germination of two Tabas and Shirkooh population seeds on MS medium was analyzed. Comparative analyses on treated and pre- treated seeds from two populations with GA3 at 23±2oC temperature did not show any significant changes in both the germination percentage and rate. However, seeds chilling treatment (4oC) indicated increased germination rate and percentage. So, after 12 weeks the maximum germination percentages were 84 and 56% for Tabas and Shirkooh populations. Also the effect of the temperature was investigated on seed germination on the wet filter paper in two levels of 23±2 and 4°C. According to results, maximum seed germination percentage obtained for Shirkooh were (90%) and Tabas (67%) populations by soaking the seeds on the wet filter papers in Petri dishes within 8 to 9 weeks. Finally, it seems that increasing endogenous GA3 concentration, which is provided mostly by chilling treatment, is the most effective factor for breaking the seed dormancy.

 
Keyword(s): FERULA ASSA-FOETIDA, SEED DORMANCY, SEED GERMINATION,GA3, CHILLING TREATMENT
 
References: 
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