EFFECT OF DIFFERENT CONCENTRATIONS OF GIBBERELIC ACID, NAPHTHALENE ACETIC ACID AND MALEIC HYDRAZIDE ON VEGETATIVE, FLORAL ATTRIBUTES AND SEED YIELD OF CHINA ASTER [CALLISTEPUS CHINENSIS L NEES] CV. POORNIMA

APARNA RAWAT¹, MAMTA BOHRA²*, PARUL PUNETHA^3
1Department of Floriculture and Landscape Architecture, College of Horticulture, Veer Chandra Singh Garhwali Uttarakhand University of Horticulture & Forestry, Bharsar, Pauri Garhwal, 246123 India
²Department of Floriculture and Landscape Architecture, College of Horticulture, Veer Chandra Singh Garhwali Uttarakhand University of Horticulture & Forestry, Bharsar, Pauri Garhwal, 246123 India
³Department of Floriculture and Landscape Architecture, College of Horticulture, Veer Chandra Singh Garhwali Uttarakhand University of Horticulture & Forestry, Bharsar, Pauri Garhwal, 246123 India
* Corresponding Author : mbohragbptu@gmail.com

Received : 05-07-2018     Accepted : 06-07-2018     Published : 15-07-2018
Volume : 10     Issue : 13       Pages : 6599 - 6602
Int J Agr Sci 10.13 (2018):6599-6602

Keywords : China aster, GA3, NAA and MH
Academic Editor : Dr Asha Poonia
Conflict of Interest : None declared
Acknowledgements/Funding : Authors are thankful to College of Horticulture, Veer Chandra Singh Garhwali Uttarakhand University of Horticulture & Forestry, Bharsar, Pauri Garhwal, 246123 India
Author Contribution : All author equally contributed

The present investigation was conducted to evaluate the vegetative, floral attributes and seed yield of China aster cv. Poornima in response to different concentrations of GA3, NAA (100, 150, 200 and 250 ppm, each) and MH (500, 600, 700 and 800 ppm) at Floriculture and Landscaping Block, College of Horticulture, VCSG, UUHF, Bharsar, Pauri Garhwal (Uttarakhand) from March to August 2016. The experiment was laid in randomized block design which replicated thrice. The results revealed that plants sprayed with GA3 @ 200 ppm produced maximum plant height (85.69 cm), number of secondary branches per plant (35.83) and plant spread (33.95 cm). With respect to floral attributes, minimum number of days taken to first flower bud initiation and flower bud opening (57.19 and 83.56, respectively) and maximum duration of flowering (28.11 days), stalk length (39.82 cm), flower diameter (8.80 cm), flower weight (5.16 g), number of flowers per plant and per plot (48.76 and 418.56, respectively) were also found in same treatment. Among seed yield parameters, test weight (1.58 g), seed yield per plant and plot (6.38 g and 55.86 g) were recorded highest from plants sprayed with GA3 200 ppm. The results also showed that application of different concentrations of MH was effective in reducing plant height and improving various quality traits in plants as compared to control.

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