Response of ajwain (Trachyspermum ammi L.) genotypes for growth and yield

Abstract

Ajwain (Trachyspermum ammi L.) also known as Bishop's weed is an annual herbaceous plant belonging to family
Apiaceae bearing grayish brown fruits. The major ajwain producing countries are India, Persia, Iran, Egypt,
Afghanistan, Pakistan and North Africa. Thirteen ajwain genotypes were evaluated for various plant growths, seed
yield attributing traits and essential oil content during 2016-17 to 2018-2019 at six (Hissar, Guntur, Jobner, Jagudan &
Faizabad) AICRP centres including ICAR-NRCSS, Ajmer, India. The significant differences were obtained for all the
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parameters studied. Plant height ranged from 118.8-121.1 cm, number of primary branches 18.0-18.8, umbels plant
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265.6-298.8, umbellate umbel 24.0-27.4 and seeds umbellate 19.0-19.5. On the basis of mean seed yield (1652.45
kg ha .) of three years (2016-17 to 2018-2019) at ICAR-NRCSS, Ajmer, the maximum seed yield was recorded as
1652.45 kg ha in AA-73, followed by IA-1(1406.91 kg ha ) showing an increase of 88.06 & 57.03 % higher seed yield
over Ajmer Ajwain -2 and Ajmer Ajwain -1 (checks), respectively. Seeds of AA-73 contains 9.15% total oil and 6.38%
essential oil which is higher (39.26 and 17.27% respectively) as compared to Ajmer Ajwain-2, national check.