Effect of Gibberellic Acid and Indole 3-Acetic Acid on Seed Germination Performance of Horse gram (Macrotyloma uniflorum) Lam (Verdc)

Abstract

The experiment was undertaken with an objective to investigate the effect of various concentrations of plant growth regulators, i.e., Gibberellic acid (GA 3 ) and Indole 3-acetic acid (IAA) on seed germination of Macrotyloma uniflorum. Seeds were soaked for 12 hours in different concentrations substances (1.0, 2.0, 3.0 and 4.0 mg/L) of IAA, GA 3 and control set was soaked only in distilled water. Three replicates of each treatment with fifty seeds per replicate were arranged for precise physiological analysis. Significant variation was found in all aspects after analysis of variance (ANOVA) of each mean value. After two weeks of seed soaking, it was noted that germination percentages were significantly accelerated by lower concentrations (1 and 2 mg) of used hormones. Amongst the two potential growth regulators, 2 mg/L was found most effective because it showed highest germination percentage for IAA (93%) and GA 3 (88%). A great deal of information relating to seed germination practices shows that these plant growth regulators were efficient in overcoming dormancy leading to rapid seed germination. IAA was selected as best hormone in this study, which showed highest seed germination (93%).

Effects of Nano Silver Particles and Gibberellic Acid on Growth and Some Physiological Characteristics of Dalbergia Sissoo Roxb.

“…Stimulatory effects reported on root elongation, fresh weight, and evapotranspiration of poplars (Populus tremula) and arabidopsis (Arabidopsis thaliana) (Wang et al, 2013). Plant hormones are another practice used for improving plant growth and development where the plant hormone gibberellins are used for improving seed performance in many species such as horse gram (Macrotyloma uniflorum) where germination percentages were significantly accelerated by GA3 (Lalitha et al, 2016). According to Al-Hawezy (2013) who has studied seed germination of loquat (Eriobotrya japonica), GA3 has a significant effect on increasing germination rate as compared to control.…”