SCIENTIFIC PAPERS-SERIES B-HORTICULTURE, cilt.59, ss.319-325, 2015 (ESCI İndekslerine Giren Dergi)
Melia azedarach L. in addition to ornamental purposes and traditional usage of the plant, some potentially occured bioactive compounds from all parts of the plant that recently studied on can cause an increasing demand of the plant seedling. The present study aims to determine the effects of gibberellic acid (GA(3)), indole-3-acetic acid (IAA) and water treatments on breaking seed dormancy, obtaining germination and to reach healthy acclimatized seedlings. The two plant growth regulators, water and different treatment durations have been applied for some plant genus or species as obtaining different germination activities. In the study for germination tests, seeds treated with 500, 1000, 2000, 3000 ppm GA(3) or L4A separately for 6 hours or 24 hours besides water treatments and control in two different seed ages. Among the all treatments in both of the two seed ages (seeds from fresh fruits from tree and seeds from fruits after one year hanging on tree); GA(3) doses gave the best germination and seedling results while controls and IAA treatments had no possitive effects on germination rates. The data was analysed using analysis of variance (ANOVA) of completely randomized block design and the groups that showed variance were then subjected to Duncan's Multiple Range Test with a significance value at P=.05. The percentage data was transformed by Arc Sin root% before carrying out ANOVA.