Effect of cutting size, number of buds and potatoes on sprouting and adventitious root formation of rose semi hardwood cuttings

Abstract

In this experiment the combined effect of cutting size (15, 20 and 25 cm), number of buds on cuttings (1, 2 and 3) and planting soft wood cutting in potatoes and without potatoes was studied relative to the sprouting of axillary buds and adventitious root formation of 3 months old rose semi hardwood cuttings. The experiment was replicated at two different times. First, the experiment was conducted in 2016 to study the effects of high elevation. Furthermore, the roses were cultivated in high elevation and was planted in low elevation. While in the second experiment the roses were cultivated in low elevation and was planted in the same elevation. In the first experiment, even though, most of the cuttings sprouted in the initial stage of development, but none of them produced roots. In the second experiment, cuttings planted in soil, leaves were developed and also most of them produced roots, while those cutting planted in potatoes, most of the cuttings sprouted in the initial stage of development, but none of them produced roots. In terms of cutting size and bud number, from the second experiment it was revealed that the numbers of bud and cutting size have significant effects on both shoot length (p < 0.001), (p= 0.009) and root formation (p< 0.001), (p= 0.022) , respectively. It was also found out that the two factors together (bud number and cutting size) have significant effect (p < 0.001) on both shoot elongation and root formation. The test of least significant difference (LSD) suggested that those treatments having 15 cm cutting size and 2 buds are significantly different in terms of both sprouting and roots formation.