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

Authors : Shaheena AFROZ, Firoz MOHAMMAD, Shamsul HAYAT, Manzer H. SIDDIQUI

Pages : 233-236

View : 16 | Download : 8

Publication Date : 2005-12-01

Article Type : Research Paper

Abstract :The response of mustard insert ignore into journalissuearticles values(Brassica juncea insert ignore into journalissuearticles values(L.); Czern & Coss cv. Varuna); to presowing seed treatment with sodium chloride insert ignore into journalissuearticles values(NaCl); was investigated. The plants raised from treated seeds were sprayed with water or 10-6 M GA3 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 insert ignore into journalissuearticles values(E.C. 4.2.1.1);, nitrate reductase activity insert ignore into journalissuearticles values(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 GA3 neutralized the ill effect of soaking treatment in NaCl insert ignore into journalissuearticles values(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