Production of high quality air-layers from Conocarpus erectus L. in response to IBA and Bacillus subtilis | ||
| Egyptian Journal of Horticulture | ||
| Article 3, Volume 47, Issue 1, April 2020, Pages 29-39 PDF (1.71 M) | ||
| Document Type: Original Article | ||
| DOI: 10.21608/ejoh.2020.21760.1125 | ||
| Author | ||
| Essam Yosef Abdul-Hafeez* | ||
| Ornamental and medicinal plants department, Faculty of Agriculture, Assiut University, Assiut, Egypt | ||
| Abstract | ||
| THE CURRENT study was conducted to evaluate the rooting behavior of air-layers of Buttonwood (Conocarpus erectus L.) under IBA stimulation and/or inoculation with Bacillus subtilis. Experiment contained two branch lengths (275 and 150 cm) and six treatments of IBA (100, or 200 ppm) and B. subtilis suspension (5 or 10 ml/air-layer from suspension 108 CFU/ml) added individually or in combinations. The best results were obtained by 200 ppm IBA and/or 10 ml B. subtilis resulting in the maximum rooting percentage (100%), the highest number of roots (58.66/layer), the longest root (26.50 cm), large root volume (86.46 cm3/layer), the heaviest fresh and dry roots (82.68 and 13.50 g/layer, respectively) and maximum percentage of layers showing secondary roots (100%). These results were correlated with highest total carbohydrates content (28.40%) and total phenolic compounds (52.41 mg Gallic acid equivalent/g DW). The interaction effects indicated that the superior combined treatment was occurred by shoot length of 150 cm supplied with 200 ppm IBA + B. subtilis. | ||
| Keywords | ||
| Conocarpus erectus; Air-layering; Asexual propagation; IBA; Bacillus subtilis | ||
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