Vol. 9, Issue 6 (2020)

Author(s):
Lokesh K, Veeregowda R and Shekar GC

Abstract:
The Flowering and seed production behaviour in long day and intermediate group of onion genotype differed significantly for growth and yield parameters. Granex it took more days to flower initiation 50 percent flowering completion of flowering and maturity the growth and yield parameters increased significantly with an increase in period of cold treatment from 35 to 75 days. The GA₃ treatment differed significantly of growth and yield parameters and also for quality attributes over no spray. The 75 days cold treatment sprayed with 200ppm GA₃ recorded maximum girth of the base of the umbel, more days to maturity, more umbels per plant, flower per umbel, seed per umbel, seed yield per umbel, seed yield per plant, 1000 seed weight and maximum seed yield per hector (992 kg) the interaction effect between cold treatment and GA₃ differed significantly. The interaction effects between genotypes, period of cold treatments and growth regulator were not significant for plant growth and yield components.