بررسي ريشه زايي قله هاي نيمه چوبي دو رگه هلو بادام در شرايط مه افشان

ROOTING ASSESSMENT OF SEMIHARD WOOD CUTTINGS OF ALMOND * PEACH HYBRID UNDER MIST CONDITION

In order to determine the effects of different concentrations of indolebutyric acid, position and time of cutting of semi hardwood cuttings of almond x peach hybrid, clone G.F. 677, an experiment was conducted in Khalat-Pooshan Research Station, in Tabriz University at 1991. This experiment was arranged in a split factorial using a randomized complete block design with 3 replications. Hormone treatment included 4 levels: 0, 100, 200 and 300 ppm, position of cuttings on the shoots at 3 levels: terminal, middle and basal, and time of cutting at 5 levels: from 6 July to 6 August with 15 days interval. Results showed that hormone treatments increased the percent of rooting (P<0.01), and highest rooting was obtained with 200 ppm IBA on 6 August (p<0.01). Three-way interaction of 200 ppm IBA x basal cuttings x cutting on 6 August were significant for rooting percent and number of root at 1% and 5% levels, respectively. Length of root with 200 ppm IBA and number of root on 6 July and 6 August were more than others (p<0.01). Effects of 200 ppm IBA x meddle cuttings x cutting on 6 July for length of roots was significant at the 1% level.