Rooting Behavior of Six Grape Cultivars (Vitis vinifera L.) Using Indole Butyric Acid
This experiment was conducted in plastic house of Horticulture and Landscape Design Department College of Agriculture and Forestry - University of Mosul, Iraq. For the period from February 18,2019 to May 18, 2019. To study the effect of dipping the hardwood grape cuttings in three concentrations of IBA solution 0, 1000 and 2000 mg..l-1 for 5 seconds on the behavior rooting ability and subsequent growth for hardwood cuttings of six grape cultivars (Zarek, Jav-Ga, Thompson Seedless, Black Rommy, Des-Alaanz and Miranee). Factorial experiment using Randomize Complete Block Design (RCBD) with three replicates per treatment, ten cuttings of each plot. The results indicated that all treatments were very effective on rooting behavior between the six grape cultivarsin this study. Black Rommy cuttings gave a significantly increase of rooting percentage compared with Jav-Ga and Miranee cultivars. The cuttings of Des-Alaanz cultivar were significantly superiority compared with others cultivars in number of roots and leaves, shoot length and dry weight of vegetative system. While Zarek cultivar was significantly superiority of compared with others cultivars in chlorophyll content and dry weight of roots system. The cuttings were treated with 1000 mg..l-1(IBA) significantly superiority in rooting percentage compared with (0 and 2000 mg..l-1) treatments. While the treatment of cuttings with 2000 (mg..l-1)IBA were significantly superiority in number of roots per cuttings than (1000 and 0 mg..l-1)IBA treatments.
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