Ecology, Environment and Conservation Paper

GENETIC VARIABILITY, HERITABILITY, AND GENETIC ADVANCEMENT IN AJWAIN (TRACHYSPERMUM AMMI L.)

Navneet Singh, Anup Pratap Singh, Rajan Singh, Anshuman Singh and V.P Pandey

Abstract

Sixty ajwain accessions and four check types, coupled with genetic diversity for several traits, were studied. The test weight had the highest PCV followed by the weight of grain/umbels, branches per plant, yield per plant, number of umbels per plant, plant height, and number of umblets/umbels. GCV that predict test weight are followed by the number of umbels per plant, plant height, yield per plant, weight of grain per umbel, days to 50% flowering, and days to maturity. Every character’s heritability estimate ranged from high to moderate. Only the number of umbels per plant showed high heritability combined with high genetic advance, and plant height showed high heritability combined with moderate genetic advance. Other traits, measured as a percentage of the mean, showed high heritability combined with low genetic advance, highlighting the significance of these traits in yield improvement programs.