Seed enhancement techniques in amaranthus cv. Co 5.

摘要

The freshly harvested seeds of amaranthus cv. Co 5 will not germinate under normal condition due to dormancy. To improve the germination, seeds were treated with different chemicals, i.e. GA₃, IAA, ethrel, thiourea and KNO₃, at different concentrations and soaking durations. All the treatments showed improvement in the germination of dormant seeds including water soaking. Among them, soaking the seeds in ethrel at 200 ppm for 12 h excelled other treatments in increasing the germination significantly from 28 to 95%. Otherwise, freshly harvested seeds could be stored for 2 months in due course to break the dormancy.