Dormancy Breaking and the Influence of Gibberellic Acid on the Early Growth of Tamarindus indica Seedlings in Mubi, Nigeria

Abstract

The purpose of this research was to determine the appropriate methods of breaking seed dormancy, level of water uptake, and the influence of gibberellic acid on the early growth of Tamarindus indica seedlings. The scarification methods used included: concentrated sulphuric acid (H2SO4), manual scarification, flaming, hot and cold water treatments. The experiments were conducted in the laboratory on Petri dishes and in potting media. GA3 was used to optimize the production of seedlings by spraying the solution on the foliage. The treatment for 10 minutes with concentrated H2SO4 gave the maximum germination percentage and water uptake (80.41%). GA3 enhances the growth of the seedlings by increasing the height, the number of leaves and stem girth at eight weeks after sowing. In conclusion, all the scarification treatments applied to the seeds of T. indica proved effective. The ten minutes treatment with concentrated H2SO4 was the best treatment for breaking seed dormancy of T. indica. And gibberellic acid enhanced early and fast seedling growth as it increase height, number of leaves and stem girth of T. indica.

Effect of Potting Media on Seed Germination and Seedling Growth of Jackfruit (Artocarpus heterophyllus) under Pryagraj Agro Climatic Condition

“…Different media offer varying levels of moisture retention, aeration, and nutrient availability, thereby influencing the germination success rate and subsequent seedling vigor. Understanding the characteristics of different germination media is essential for growers seeking to propagate jackfruit seedlings efficiently [3,4,5,6].…”

Variaciones morfométricas de semillas y alternativas físico-químicas en la germinación de tamarindo (<em>Tamarindus indica </em> L.)

“…Las semillas de T. indica, se consideran dormantes por dos razones de acuerdo con Yusuf et al (2019), una es debido a la presencia de embriones inmaduros y la segunda, a la presencia de tegumento impermeable para la absorción del agua. Esta situación hace que el proceso de germinación de las semillas latentes sea mucho más lento y no uniforme, ya que las condiciones necesarias para terminar su dormancia en condiciones naturales requieren mucho tiempo y bajo las condiciones del Caribe puede tardar hasta 30 días, lo cual incide en la eficiencia de los viveros y establecimiento de plantaciones, dada la importancia de este árbol polivalente, con uso potencial en la agrosilvicultura, ya que posee la capacidad de fijar nitrógeno, su tolerancia a suelos infértiles, a períodos prolongados de sequía y su utilidad en el control de la erosión (Rahman, 2020).…”