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Pakistan Journal of Biological Sciences

Year: 1998  |  Volume: 1  |  Issue: 2  |  Page No.: 111 - 114

Intravarietal Variability in Rice (NR-I) with Respect to Salt Stress

M. A. Naeem, R. H. Qureshi, M. Aslam, R. Ahmad, N. Ahmad, A. Hussain, M. Saleem and K. Hussain

Abstract

In order to determine genetic diversity of NRI against NaCl salinity, a study in hydropnic system was carried out with 60 plants of NRI at 70 ml m-3 NaCl salinity. Plants were grown up to maturity and on the basis of growth and paddy yield, the plant population of NR-I was divided into five tolerance classes and corresponding values of K+, Na+, Cl-, K:Na and P:Zn ratio were averaged and relationships of these parameters with the salt-tolerance character was evaluated. The study revealed that salt tolerance of various population groups was correlated with the exclusion of Na+ and Cl-, better maintenance of K+, high K:Na and low P:Zn ratios in the leaves. The chemical composition of leaves depends upon the age of the leaf.

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