International Journal of Pure & Applied Bioscience (IJPAB)
Year : 2017, Volume : 5, Issue : 1
First page : (142) Last page : (146)
Article doi: http://dx.doi.org/10.18782/2320-7051.2466

Influence of Growth Retardant on Vegetative Growth and Leaf Chlorophyll Content of Jackfruit (Artocarpus heterophyllus)

Satyendra Singh Negi, Shant Lal and Hariom Sah*
Department of Horticulture, College of Agriculture, G. B. Pant University of Agriculture and Technology, Pantnagar-263145, U.S. Nagar, Uttarakhand, India
*Corresponding Author E-mail: harryforester@gmail.com
Received: 16.01.2017  |  Revised: 24.01.2017   |  Accepted: 26.01.2017  

ABSTRACT

An experiment was carried out during the year 2010-11 and 2011-12 to study the response of growth retardant on the vegetative growth and leaf chlorophyll content of Jackfruit. The experiment was conducted on eleven years old jackfruit trees cv Pant Garima by using variable concentrations of paclobutrazol. Paclobutrazol was applied as soil drench @ 5, 10, 15, 20 and 25 ml with 5 litre of water in each treatment/tree and as foliar spray @ 2.5, 5, 7.5, 10 and 12.5 ml with 5 litre of water in each treatment/tree in the month of September. Findings revealed that tree height, tree spread, shoot length as well as leaf area were reduced by paclobutrazol treatment, especially with soil drench method. The maximum reduction in vegetative growth parameters as well as maximum chlorophyll content of leaves (chlorophyll a, chlorophyll b and total chlorophyll) was recorded with treatment T5 (soil drench @ 25 ml paclobutrazol/tree).  

Key words: Jackfruit, growth retardant, paclobutrazol, vegetative growth, chlorophyll

Full Text : PDF; Journal doi : http://dx.doi.org/10.18782

Cite this article: Negi, S.S., Lal, S. and Sah, H., Influence of Growth Retardant on Vegetative Growth and Leaf Chlorophyll Content of Jackfruit (Artocarpus heterophyllus), Int. J. Pure App. Biosci.5 (1): 142-146 (2017). doi: http://dx.doi.org/10.18782/2320-7051.2466