Effect of gamma irradiation on growth and yield of Crossandra (Crossandra infundibuliformis (L.) Nees.)

Abstract

The present experiment was carried out to determine gamma ray sensitivity in Crossandra (Nilakottai Local) to various levels of gamma rays (100, 200, 300,400 and 500Gy) on plant height, number of leaves, Internodal length, number of branches, days for first flowering, number of spikes, number of flowers per plant, 100 flower weight and flower yield. The seeds irradiated with 200Gy shows better results in Plant height (84.32cm), number of leaves (213.35), length (10.78cm) and breadth of leaf (5.26cm), internodal length (4.36cm), number of branches (28.29), length of branch (29.23cm), plant spread east–west (38.95) and plant spread north-south (33.56cm), number of spikes per plant (80.71), number of flowers per spike (37.76), number of flowers per plant (1747.76), weight of 100 flowers (6.64g) and yield of flowers per plant (86.34g) over the control.