EFFECT OF SOME TREATMENTS ON Atropa belladonna SEEDS GERMINATION.

Abstract

This research was conducted at tissue culture lab./College ofAgriculture/University of Baghdad during september2011. The study includedtreated Atropa belladonna seeds with different concentrations of HCl fordifferent period, and using culture media contained different concentrations ofGA3. The objective of using HCl and GA3 was to break the dormancy of theseeds and shorten the period of germination .Results showed that the highest percentage of germination 100% wasobtained from seed treated with 50% HCl for 5 min . and cultured in mediacontained 0.6 mgGA3/litter It also showed that increasing GA3 concentration inthe media resulted increasing in the percentage of germination.