Abstract
A pot experiment was conducted in normal and saline "soil (ECe - 6dS m" ) to study the physiological behaviour of salt tolerant and salt sensitive rice cultivars. Total dry matter production and total leaf area of the cultivars decreased in salinity compared to the normal soil however, relationship between total dry matter production and total leaf area for all the cultivars at both soil conditions remained similar. The values of specific leaf weight (SLW) and net assimilation rate (NAR) increased steadily from first to the last harvest in normal soil whereas, it showed a decline under salinity. The values of relative growth rate (RGR) generally increased after the first harvest and then decreased in the last harvest for all the cultivars under both the soil conditions. A positive but non-significant correlation was observed between SLW and NAR in normal soil but negative and non-significant under salinity stress. A positive but non significant correlation was observed between RGR and NAR under normal soil and negative but significant correlation was found between RGR and NAR under salinity stress.
T. Mahmood,, M. Younas, , S.M. Mehdi , M.H.K. Niazi* . (1991) COMPARATIVE PHYSIOLOGICAL STUDIES IN RICE (Oryza sativa L.) UNDER NORMAL AND SALINE CONDITIONS, The Journal Soil & Environment , Volume 6, Issue (3-4).
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