PJB-1991-2
RELATIVE GROWTH RATE AND ION TRANSPORT IN RICE GROWN UNDER SALINE ENVIRONMENT
M. ASLAM,
R.H.QURESHI N. AHMED AND M.A. KAUSAR
DOI:
Abstract
An experiment was conducted in solution
culture with two rice cultivars of varying self-tolerance: NIAB 6 (Salt tolerant) and IR
1561 (Salt sensitive), to compare their growth rate and ion transport from root to shoot when exposed to salinity levels of 0 and 100 mole m-3 NaCl. NIAB 6 had a faster rate of growth than IR 1561 under saline conditions. At early seeding stage, rate transport of Na+, K+ and Cl- was much higher in IR 1561 but later on , transport of Na+ and K+ was greater in NIAB 6 whereas Cl- transport higher in IR 1561. The higher rate of Na+ translocation from root to shoot in NIAB 6 was probably mitigated by the dilution of Na+ due to faster rate of growth
of this cultivar.
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