PJB-2006-68
EFFECT OF SEED PRIMING ON GROWTH OF BARLEY (HORDEUM VULGARE) BY USING BRACKISH WATER IN SALT AFFECTED SOILS
M.A. NAEEM AND S. MUHAMMAD
Abstract
Impact of different pre-sowing seed treatments on growth of barley by using brackish water for irrigation in different combinations of CaSO4 (10 mM), CaSO4 (30 mM), Gibberellic Acid (20 ppm), Gibberellic Acid (60 ppm) and hydro priming for 12 h were investigated in pot experiment. Artificially prepared brackish water was used for irrigation throughout the crop growth period. Maximum seed germination was observed in treatment with GA3 (20 ppm followed by CaSO4 (10 mM) while the minimum in farmer practice treatment (control). Similar trend was found in the straw yield. Highest Na+ concentration was observed in leaves of plants in pre-sowing seed treatment with GA3 (20 ppm) with a median content of 50.25 ppm while minimum in hydro priming for 12 h. Similar trend was found in the K+, Ca2+ and Mg2+ analyzed at the booting stage. Highest Cl- concentration was observed in plant with median content of 150.03 ppm, while minimum in CaSO4 (10 mM) in the leaf of barley at booting stage with a median content of 125.03 ppm respectively. The maximum Na+: K+ ratio in the plant leaf was observed in control (farmer practice) with a median content of 0.280 and lowest in CaSO4 (10 mM) with a median content of 0.226. The Ca2+: Mg2+ ratios were observed maximum almost in all the primed treatments than farmer practice (control).
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