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

Authors

SHAHEENA AFROZ
FIROZ MOHAMMAD
SHAMSUL HAYAT
MANZER H. SIDDIQUI

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).

DOI

-

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