Effect of Plant Growth Regulators on Seed Germination and Seedling Vigour in Asparagus sprengeri Regelin

摘要

Asparagus sprengeri Regelin is a rounded, herbaceous perennial and used in landscape for its attractive, fine textured foliage. Asparagus sprengeri Regelin commonly known as Asparagus fern, which is not a true fern. It reproduces by seed. The active ingredients are present in roots of the plant. Seed germination is slow. Hence, the present investigation was carried out to study the influence of different growth regulators on seed germination, root, shoot and leaf length, weight and vigour index. The seeds were soaked in different growth regulators like Indole-3-Acetic Acid, Indol-3-Butyric Acid, -naphthalene Acetic Acid and various concentrations of gibberellic acid to evaluate their effect on germination. It was found that GA3 had a significant effect on germination rate as compared to control, IAA, IBA and NAA during light and dark period. The result indicates that GA at 50 ppm gave best response but as the concentration increased above 60 ppm the germination decreased rapidly and vigour index also decreased during light and dark period.