Effects of Different Auxin (IBA) Concentrations and Planting-Beds on Rooting Grape Cuttings (Vitis vinifera)

Aims: Vitis vinifera is a grape species and native to the Mediterranean region and east to northern Iran. The present research was carried out in greenhouse conditions to study the effects of four concentrations of indole-3-butyric acid (IBA) (0; 2000; 4000; and 6000 mg/l) and three planting beds (agricultural soils, sandy, and mixture of agricultural soils and sand) on rooting grape cuttings in institute of agriculture at Zabol University, (Iran).
Methodology: The experimental design was a factorial design in randomized complete block with three replicates.
Results: Results showed that different auxin and planting bed treatments had a significant influence on grape rooting. The maximum number of roots, root length, and root fresh and dry weight was obtained by applying 4000 mg/l IBA. The significant effect of planting bed treatments was found in studying traits, so that maximum number of roots, root length, and root fresh and dry weight was obtained in mixture of agricultural soils and sand planting beds. Studied traits significantly affected by an interaction effect of IBA and cuttings beds, so that maximum number of roots, root length, and root dry weight was obtained by using 2000 mg/l IBA + sandy planting bed, and maximum root fresh weight was obtained by using 4000 mg/l IBA + sandy planting bed.