Influence of Iba And Media on Rooting Percentage And Growth of Semi-hardwood Cuttings of Red-tip Photinia Plant (photinia X Fraseri)

Abstract

Experiment was carried out in plastic house that belong to the Red Rose Nursery / Dohuk government in autumn season between 1 st Oct 2018, to 30 th May 2019, to discuss the effect of media ( peat moss, sand and peat moss+ sand), & IBA concentrations (0, 4000, 6000, 8000) mg.l -1 on rooting might of Semi-hardwood cuttings of photinia (Photinia x fraseri) plant. Results indicate that the highest rooting percentage (50.88) %, plant high (19.17) cm, vegetative fresh weight (9.10) gm and vegetative dry weight (4.09) gm was recorded in cutting that planted in peat moss media which significantly superior than other media. in the other hand the 6000 & 8000 mg.l -1 of IBA caused increased in rooting percentage reached 50.56% and 51.78% respectively , vegetative fresh and dry weight also significantly increase when applied to 4000 and 6000 mg.l -1 of IBA they reached to 8.87 gm, 3.82 gm compared with 2.62gm for control. In addition, fresh and dry root weight significantly increased with IBA increase from 4000 to 6000 mg. l -1 , the highest length of plant is significantly increased reaching 34.11 for 6000-mg. l -1 . The interaction between media and IBA concentrations cased increased significantly in all parameters and the highest rooting percentage (73.33) %, plant high (43.33) cm, leaf number (24.00) leaves were for peat moss media and 600 mg. l -1

Different Responses to Adventitious Rhizogenesis under Indole-3-Butyric Acid and Seaweed Extracts in Ornamental’s Cuttings: First Results in Photinia x fraseri ‘Red Robin’

“…In our study, both Kelpak ® and Goteo ® negatively affected root length, surface area and diameter compared to IBA and the control (Table 4). On the contrary, positive effects of Goteo ® on rooting were reported for Physocarpus opulifolius [75], Hydrangea paniculata [90], Ornithogalum arabicum [91] and rose [58]. In Fraser's Photinia, both Kelpak ® and Goteo ® at different concentrations decreased the number of root tips, forks and crossings compared to the IBA treatment (Table 5).…”

“…For example, refs. [57,58], have achieved the best results with 0.8%, while Bonamino and Blazich [49] have applied IBA at 1%. Kelpak ® (identified as K), is composed of 34% (w/w) E. maxima extract 11.16 mg L −1 auxin and 0.031 mg L −1 cytokinin (with a auxin:cytokinin ratio of 360:1), alginates (1.5 L −1 ), amino acids (total 441.3 mg 100 g −1 ), mannitol (2261 mg L −1 ), neutral sugars (1.08 g L −1 ), and small amounts of macroelements (N 0.09%, P 90.7 mg kg −1 , K 7163.3 mg kg −1 , Ca 190.4 mg kg −1 , Mg 337.2 mg kg −1 , Na 1623.7 mg kg −1 ) and microelements (mean composition: Mn 17.3 mg kg −1 , Fe 40.7 mg kg −1 , Cu 13.5 mg kg −1 , Zn 17.0 mg kg −1 , B 33.0 mg kg −1 ) [43,59].…”

The rooting capacity of red tip photinia; Photinia × fraseri hardwood cuttings under the effects of cutting time and IBA concentration

“…Several studies had reported that the effective action in the process of adventitious root formation can be influenced by a series of internal and external factors. Among internal factors, the most important role goes to phytohormones, especially the auxins, is attributed [12,24,25,26,27]. It is generally believed that auxin have a particular role in root initiation [28].…”