Exogenous Application of Gibberellic Acid Counteracts the Ill Effect of Sodium Chloride in Mustard

Authors

SHAHEENA AFROZ
FIROZ MOHAMMAD
SHAMSUL HAYAT
MANZER H. SIDDIQUI

DOI

-

Abstract

The response of mustard (Brassica juncea (L.) Czern & Coss cv. Varuna) to presowing seed treatment with sodium chloride (NaCl) was investigated. The plants raised from treated seeds were sprayed with water or 10^{-6} M GA_3 at the 30- day stage. The seeds imbibed in 1 or 10 mM of NaCl resulted in a decrease in dry mass, leaf chlorophyll content, carbonic anhydrase activity (E.C. 4.2.1.1), nitrate reductase activity (E.C. 1.6.6.1) and net photosynthetic rate at the 60-day stage, and pod number and seed yield at harvest. However, spray application of GA_3 neutralized the ill effect of soaking treatment in NaCl (1 or 10 mM).

Keywords

Brassica juncea, carbonic anhydrase, chlorophyll, nitrate reductase, salinity, seed yield Abbreviations: CA-carbonic anhydrase; DAS-days after sowing; DH- dry mass; NR-nitrate reductase; PN-net photosynthetic rate

First Page

233

Last Page

236

Recommended Citation

AFROZ, SHAHEENA; MOHAMMAD, FIROZ; HAYAT, SHAMSUL; and SIDDIQUI, MANZER H. (2005) "Exogenous Application of Gibberellic Acid Counteracts the Ill Effect of Sodium Chloride in Mustard," Turkish Journal of Biology: Vol. 29: No. 4, Article 7. Available at: https://journals.tubitak.gov.tr/biology/vol29/iss4/7