EVALUATION OF AJWAIN (Trachyspermum ammi L.) GENOTYPES FOR GROWTH, YIELD AND QUALITY UNDER EASTERN DRY ZONE OF KARNATAKA
University of Horticultural Sciences, Bagalkot. (College of Horticulture, Bengaluru).
The present experiment was conducted at College of Horticulture, University of Horticultural Sciences Campus, GKVK, Bengaluru during rabi season of 2019-20 to evaluate ajwain genotypes for growth, yield and quality traits under Eastern dry zone of Karnataka. The experiment was laid out in randomized complete block design with three replications and fourteen genotypes. The genotype GA-1 exhibited highest plant height (120.81 cm) at harvest, maximum fresh and dry weight (383.52 and 46.80 g plant-1 ) at 120 DAS, number of umbels per plant (207.20), number of seeds per umbel (415.73) and seed yield (13.37 q/ha). The maximum number of primary (11.33) and secondary branches (43.67) at harvest and minimum days to seed maturity (136.67 days) was registered in the genotype AA-93. The genotype AA-1 registered maximum leaf area (26.45 cm2 ) and number of umbellet per umbel (20.00), test weight was maximum in DAC-6 (1.15 g) and the genotype DAC-7 exhibited highest oil content (3.60 %). The pest infestation during the crop growth period ranged from 1.87 to 2.67 semi looper/ leaf roller per plant, stem fly 3.00-6.66 per cent/ 3.8 m2 plot and aphid infestation was minimum in Lam Sel-1 (43.37/ 5 cm apical shoot). The high B:C ratio (3.54) was registered in the genotype GA-1. Plant height, primary branches per plant, umbels per plant, umbellet per umbel, seeds per umbel and harvest index were significant and positively associated with seed yield per plant at both genotypic and phenotypic levels. Meanwhile, Primary branches per plant, umbels per plant, umbellet per umbel, seeds per umbel, test weight and harvest index exhibited direct positive effects on seed yield per plant.