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Agricultural Science Digest - A Research Journal
Year : 2017, Volume : 37, Issue : 1
First page : ( 51) Last page : ( 55)
Print ISSN : 0253-150X. Online ISSN : 0976-0547.
Article DOI : 10.18805/asd.v0iOF.7324

Repercussion of photosynthetic variables and related enzymes under influence of sodium dihydrogen orthophosphate and sodium sulphate with two modes of gibberellic acid application

Mazid Mohammad1,*, Naz Farha2

Department of Botany, Invertis Institute of Applied Sciences and Humanities, Bareilly-243 123, India

1Department of Botany, Invertis Institute of Applied Sciences and Humanities, Bareilly-243 123, India

2Plant Science Division, University Campus, MJP Rohilkhand University, Bareilly-243 123, India

*Corresponding author's e-mail: mazidmohd699@gmail.com

Online published on 17 March, 2017.

Abstract

An experiment was carried out to investigate whether the application of gibberellic acid (GA) along with NaH2PO4 and/or Na2SO4 could ameliorate photosynthetic variables and enzymes in chickpea cultivar DCP 92-3 without compromising the nitrogen fixing activity. Before, sowing the seeds of chickpea were soaked for 8 h in 10−6MGA. 60 and 70 days after sowing (DAS), the plants were sprayed with 10−6MGA along with 2 kg P and/or S/ha in two equal splits. Performance of the crop was assessed in terms of chlorophyll content (Chl), net photosynthetic rate (PN), stomatal conductance (gs), carbonic anhydrase activity (C A) and one most significant N-fixing enzyme, NR. Treatment (16) SGA+FGAPS proved best, it enhanced Chl content by 46.16% and 48.84% PN by 64.24 and 65.37%, NR by 22.37% and 22.46% respectively at 90 and 100 DAS. CA at 100 DAS only and gs at both stages of sampling found non-significant. Moreover, CA enhanced by 64.56% at 90 DAS also.

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Keywords

Carbonic anhydrase activity, Gibberellic acid, Net photosynthetic rate, Nitrate reductase activity, Plant growth regulators, Stomatal conductance.

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