The effect of indole-butyric acid and kinetin on rooting of rose cuttings in winter and summer
2013
Borowski, Edward | Kozłowska, Lidia | Wilkowicz, Maria
The effect of indole-butyric acid, both alone and with a low concentration of kinetin, on the rooting of rose cuttings in winter and summer, is presented in this paper. The experiments were conducted using 500 and 1000 mg/l IBA with or without the addition of 5 mg/l kinetin. The growth regulators were applied by dipping the base of a cutting for 5 s in an aqueous solution of these substances. Cuttings 5-6 cm in length were made from the mid-part of a stem of a rose grown in a greenhouse. The experiments were carried out using 'Queen of Bermuda' and 'Baccara' cuttings. The investigations showed that treating rose cuttings rooted in winter with an IBA solution had a significant promotive effect on the quantity of rooted cuttings, number of formed roots on the cutting, as well as on the length of the longest root. A distinctive increase in the number of breaking buds was also seen on the cuttings treated with IBA. The IBA solution applied to cuttings rooted in the summer significantly decreased the number of rooted cuttings and breaking buds. However, no significant influence on the number and length of formed roots was found. Addition of kinetin to the IBA solutions did not have any effect on the rooting of rose cuttings either in winter or summer.
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