الفهرس 
Effect of gamma-rays on seed germinationOnly 14 pages are availabe for public view
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Abstract
This study was conducted in a private Farm in Centerees village , Ashmoon district, Menofiya Governorate during 2005 6/07 and 2007/08 seasons to study the effect of different doses of gamma –rays on the vegetative growth and flowering characteristic and oil content as well as growth variation of Matricaria chamomolla L.plant. Dry seeds ware irradiated by gamma- rays. Gamma -rays were generated from the Cobalt Co60) sources installed in Atomic Energy Establishment at Naser city, Cairo, Egypt. The used doses were 0, 2.5, 5, 10, 20, 30 and 40 kr in the two experimental seasons. Irradiated and non irradiated seeds were sown in seedling trays in the nursery on 15th September 2005 and 2006. Seedlings were transplanted on 1 November 2005 and 2006 in plots in the field. The experimental design used was a randomized complete blocks with three replicates. Every replicate contained 7 treatments in the first and the second seasons. Every treatment contained two ridges every one contained 10 plants.