Influence different concentrations of L-tryptophan and Spirulina platensis algae extract on growth behavior and chemical constituents of Schefflera arboricola | ||||
| Horticulture Research Journal | ||||
| Volume 3, Issue 6, September 2025, Page 63-73 PDF (552.14 K) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/hrj.2025.451667 | ||||
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| Author | ||||
| M.A. El-Ashwah | ||||
| Ornamental Plants and Landscape Gardening Res. Dept., Hort. Res. Inst., ARC, Giza, Egypt | ||||
| Abstract | ||||
| This experiment was carried out in pot during spring seasons of 2023 and 2024 at nursery followed to Orn. Plants and Landscape Res. Dep., Hort. Res. Inst., A.R.C., Giza, Egypt. This study aimed to evaluate the impact different concentrations L-tryptophan at (0, 50, 100 or 200 ppm), Spirulina platensis algae extract at (0, 1.0, 2.0 or 3.0 ml/l) and their interaction between this treatments on schefflera growth behavior and leaf green color degree as well as some chemical compositions. The tallest plants, thickest stems, heaviest leaves and root weights per plant were noticed in 200 ppm L-Trp alone or with 3ml/l S. platensis algae extract treated plants. The highest leaf green color degree (SPAD unit) was recorded with the combination between (200 ppm L-Trp + 3.0 ml S. platensis algae extract) compared to the other combinations under study. Increasing concentration each of L-Trp or S. platensis algae extract gradually increased total carbohydrates, total nitrogen, total phosphorus and potassium percentages in schefflera leaves. Generally, it could be recommend that, to obtain the best vegetative and roots growth and quality of Schefflera arboricola, the plants should be sprayed with L-Trp at 200 ppm and Spirulina extract at 3ml/l every three weeks. | ||||
| Keywords | ||||
| Schefflera Arboricola; L; tryptophan; Spirulina platensis algae; Growth; Chlorophyll | ||||
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