RT Journal T1 PHYSIOLOGICAL RESPONSE OF WHEAT (Triticum aesitivum L.) VARIETIES AS INFLUENCED BY SALINITY STRESS A1 J. Din A1 S.U. Khan A1 I. Ali JF Journal of Animal and Plant Sciences JO JAPS SN 1018-7081 VO 18 IS 4 SP 25 OP 40 YR 2008 FD 2008/08/01 DO DOI NA AB

Response of seven wheat (Triticum aesitivum L.) varieties; Lu-26, Inqilab-91, Bakhtawar, Parwaz-93, Pak-81, Pasban-90 and Potohar-1 was determined under NaCl salinity in glasshouse. The plans were exposed to 100 mol m-3 NaCl and its effect on physiological parameters relating to salinity tolerance like; relative growth rate, chlorophyll contents, proline accumulation, Na+, K+ uptake and their fluxes was recorded. The relative salinity tolerance of the wheat varieties was determined on the basis of their survival percentage in 400 mol m-3 NaCl. The survival percentage was greater of LU-26 (85%) followed by Punjab-85 (65%) and Inqalab-91 (55%). The survival of other varieties was between 25-40 %. K: Na and, Chlorophyll contents were greater in Lu-26, followed by Punjab-85 and Inqalab-91. The same varieties showed greater fluxes of K+ and lesser of Na+. Based on the survival percentage and physiological data the wheat variety Lu-26, performed best followed by Inqalab-91 and Punjab-85 were also found better under saline conditions. Bakhtawar, Potohar, Parwaz, Pasban, and Pak-81 were relatively salt sensitive and showed less survival, relative growth rate and higher uptake of sodium under NaCl salinity. Physiological parameters like low fluxes of Na+ and high of K+, high shoot K:Na and chlorophyll contents were found to be useful parameters related to salinity tolerance of wheat.

K1 Salinity, wheat, sodium and potassium uptake, K: Na, chlorophyll, proline PB Pakistan Agricultural Scientists Forum LK https://thejaps.org.pk/AbstractView.aspx?mid=2008-JAPS-406