In Vitro Propagation and Flower Induction of Rosa sericea Lindl

Abstract

      This study was conducted to determine optimal media for in vitro propagation and flowering of rose (Rosa sericea Lindl) collected in Phu Tho province, Viet Nam. 99.78% of rose explants formed shoots on MS medium supplemented with 2.0 mg/l BA and 0.05 mg/l α-NAA. The optimal medium for micropropation was MS medium containing 1.5 mg/l BA. 100 % of the shoots produced roots on ¼ MS. The study showed that AgNO₃ and CoCl₂ had positive impacts on in vitro flowering of the rose plantlets. On medium supplemented with 30 μM AgNO₃ or 30 μM CoCl₂, flowering rates were 50 % and 20 %, respectively. On medium containing 30 μM AgNO₃, flower longevity last 14 days after anthesis whereas on medium including 30 μM CoCl₂, flowers only last 7-8 days.