SEEDS OF ELEPHANT APPLE (DILLENIA INDICA L.) RESPONSE TO SOME PRE-GERMINATION TREATMENTS

• الحاوية / القاعدة: Scientific Journal of Flowers and Ornamental Plants
• المؤلفون الرئيسيون: Sayed Shahin, Amal El-Fouly, Azza Abdel-Moniem
• التنسيق: مقال
• اللغة: الإنجليزية
• منشور في: Scientific Society for Flowers and Ornamental Plants 2015-03-01
• الموضوعات: elephant apple (dillenia indica l.) tree; seed germination; pre-sowing treatments; seedling growth
• الوصول للمادة أونلاين: https://sjfop.journals.ekb.eg/article_5098_1e97c9f762c7b65fe8cd2b56e6e21134.pdf
• تدمد: 2356-7864; 2536-9296

This experiment was consummated under shade at thenursery of Hort. Res. Inst., ARC, Giza, Egypt during 2013 and 2014seasons to explore the effect of some pre-sowing treatments, viz.control (untreated seeds), seeds without mucilage, soaking in tap waterfor 24, 48, 72 h under ambient conditions, soaking in hot water (60-70C) for 24h, soaking in absolute ethanol (97%) for either 12 or 24 hand soaking in concentrated sulfuric acid (98.5%) for 3 min ongermination measurements of Elephant apple (Dillenia indica L.) seedsand growth of the produced seedlings.The obtained results have shown that seeds of control and thosesoaked in either hot water or ethanol for 24 h failed to germinate, whileseeds without mucilage and those soaked in ethanol for 12 h gave theleast germination percentage in the two seasons. The other treatments,however significantly improved germination %, with the superiority ofsoaking in concentrated H2SO4 for 3 min treatment, which elevatedsuch parameter to 100% in both seasons. Besides, germination % wasfound to progressively increase with elongating soaking period in tapwater to reach 100% in the first season and 83.33% in the second oneby the longest soaking period (72 h). The germination velocity andmean germination rate were accelerated and the indices of germinationrate and vigour, seeds viability and plumule length were significantlyimproved by some treatments used in this trial, but the prevalence wasalso for acid treatment which followed by soaking in tap water for 72 htreatment. Similarly, were those result of seedling growth traits andleaf content of chlorophyll a, b, carotenoids, total soluble sugars,indoles and phenols, as the soaking in concentrated H2SO4 for 3 mintreatment scored the best growth of the seedling and the highestcontent of the various constituents which was accompanied with theleast content of total phenols. Also, soaking in tap water for 72 hoccupied second rank.So, it advised to soak Elephant apple (Dillenia indica L.) tree seedseither in concentrated sulfuric acid (98.5%) for 3 min or in tap waterfor 72 h to obtain the best germination and quality of seedlings.