International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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Original Research Articles                      Volume : 9, Issue:11, November, 2020

PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
Email : /
Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2018: 95.39
NAAS RATING 2020: 5.38

Int.J.Curr.Microbiol.App.Sci.2020.9(11): 2818-2824

Effect of NAA and Ethrel on Flowering Characteristics of Pineapple (Ananas comosus L. Merr.) Var. Queen
Usha Kumari1*, K. K. Jha1, S. Sengupta1, S. Misra1, A. K. Tiwary1 and M. Chakraborty2
1Department of Horticulture,
2Department of Genetics and Plant Breeding, Birsa Agricultural University, Kanke, Ranchi, India
*Corresponding author

The present experiment entitled “Effect of NAA and Ethrel on flowering characteristics of pineapple (Ananas comosus L. Merr.) Var. Queen” was conducted at the Agri-technology Park, Birsa Agricultural University, Kanke, Ranchiduring 2017-2020. The experiment was laid out in Factorial Randomized Block Designed having two factors the Factor A consisted twelve growth regulators and their combination viz. NAA 10ppm (G1), NAA 20ppm (G2), Ethrel 10ppm (G3), Ethrel 30ppm (G4), Ethrel 50ppm (G5), NAA 10ppm + Ethrel 10ppm (G6), NAA 10ppm + Ethrel 30ppm (G7), NAA 10ppm + Ethrel 50ppm (G8), NAA 20ppm + Ethrel 10ppm (G9), NAA 20ppm + Ethrel 30ppm (G10), NAA 20ppm + Ethrel 50ppm (G11) and Control (G12) and Factor B consisted three stages of spray i.e. 30 leaves stage (S1), 35 leaves stage (S2) and 40 leaves stage (S3).With respect to growth regulators, significantly maximum Flowering percent and minimum days to flowering were recorded with Ethrel 30 ppm. In case of stage of spray, it was found statistically most effective and maximum flowering percent and minimum days taken for flowering after spray were registered with 40 leaves stage. Interaction effect of growth regulators and stage of spray show a significant influence with respect to flowering attributes studied in present investigation.

Keywords: Pineapple, Flowering characteristics

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How to cite this article:

Usha Kumari, K. K. Jha, S. Sengupta, S. Misra, A. K. Tiwary and Chakraborty, M. 2020. Effect of NAA and Ethrel on Flowering Characteristics of Pineapple (Ananas comosus L. Merr.) Var. Queen.Int.J.Curr.Microbiol.App.Sci. 9(11): 2818-2824. doi:
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