Effect of IBA and Soil mixture on rooting of (Hibiscus rosa- sinensis)

Hibiscus rosa-sinensis is a native plant of tropical and southeastern Asia. The variety of ‘yellow double hybrid’ is a difficult to root. For evaluation of plant rooting were Indole Butyric Acid was used in four levels of 0, 1000, 2000 and 4000 mg l-1 in sand-perlite and peat-perlite beds by a completely randomized design in three replications. The cuttings were selected when their heights were 12-10 cm and they had 6-8 buds. After sterilization and hormonal treatment, cuttings were planted in 3 cm depth of beds. In this study, factors such as callus time, beginning rooting, number of buds, percentage of rooting, number of root and root length were determined. The results showed that with increase in levels of rooting hormones, callus induction time and time of start of root was been reduced. On the other hand, percentage of rooting and number of root in cuttings and length of roots produced in each cutting was increased. According to the measured factors, treatment of 4000 mg l-1 was better treatment in increasing percentage of rooting and other affecting factors on the quality of cuttings in both mixture beds