National Academy of Agricultural Sciences (NAAS)
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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706 Issues : 12 per year Publisher : Excellent Publishers Email : editorijcmas@gmail.com / submit@ijcmas.com Editor-in-chief: Dr.M.Prakash Index Copernicus ICV 2018: 95.39 NAAS RATING 2020: 5.38 |
The present investigation was conducted to establish a protocol for studying the seed germination and growth performance of China aster var. Kamini at varied concentrations of plant growth regulators GA3 (100ppm, 200ppm and 300ppm), NAA (100ppm, 200ppm and 300ppm), IBA (100ppm, 200ppm and 300ppm) and IAA (100ppm, 200ppm and 300ppm) in the Floriculture and Landscaping Block of College of Horticulture, Veer Chandra Singh Garhwali, Uttarakhand University of Horticulture and Forestry, Bharsar, Pauri Garhwal (Uttarakhand) during 2021. The experiment was laid out in Randomized Complete Block Design and each treatment was replicated thrice. The seeds were sown in pots of size 15 cm × 15 cm (length and diameter). Among the various concentrations used GA3 @200 ppm showed the best germination per cent (93.33±3.52 %) in lab condition and GA3 @ 300 ppm showed best germination per cent (94.00±0.57%) in field condition. In GA3 @ 300 ppm observed best result in plant height (55.16±0.36cm), plant spread (12.60±0.19 cm), number of primary branches (11.77±0.40), number of secondary branches (15.66±0.50) and number of leaves per plant (148.00±2.72). In GA3 @ 300 ppm revealed the best result in bud initiation in plant (162.00±0.19), bud showing colour (166.29±0.66), days of first flower opening (174.00±0.19), 50 % flowering (176.33±0.50), days of complete flowering (185.22±0.29), flower diameter (6.36±0.17), stalk length (33.03±0.93), number of flowers per plant (20.22±0.40), and weight of flower (3.41±0.12). In treatment IAA @ 300 ppm showed best result in vase life (10.77±0.72) of flower and in NAA @ 300 ppm showed best result in shelf life (6.33±0.19) of flowers. Thus, it can be concluded that in treatment GA3 @ 200 ppm was found effective in seed germination. For best vegetative and flowering growth, the treatment containing GA3 @ 300 ppm was found best. However, NAA @ 300 ppm was found effective for enhancing shelf life of the flower. Similarly, IAA @ 300 ppm was found suitable for increased vase life of China aster.
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