Effect of Fields Radiation on Callus Inductivity and Differentiation of Hedysarum scoparium Fisch.et Mey. EFFECT OF ~(60)Co γ-RAYS IRRADIATION PRETREATMENT ON CALLUS INDUCTIVITY AND DIFFERENTIATION OF STRAWBERRY ANTHER EFFECTS OF ANTHER PRETREATMENT BY MAGNETIC FIELD ON ANTHER CULTURE OF Indica RICE