Varietals differences in agronomic performance of six wheat varieties grown under saline field environment
Journal Title: International Journal of Environmental Science and Technology - Year 2005, Vol 2, Issue 1
Abstract
Six wheat varieties (SARC-1, SARC-2, SARC-3, SARC-4, LU26S and Punjab-85) were planted in the field to evaluate their comparative performance under saline conditions. LU26S appeared the most salt-tolerant variety and gave the highest grain weight due to its low Na+ uptake, high K+/Na+ ratio, higher dry weight of shoots and spikes and better grain development. Better exclusion of Na+ and other ions from the leaves of salt-tolerant variety LU2 6S could also be a reason for its ability to maintain a higher grain weight in the saline soil. Punjab-85 appeared the most salt-sensitive variety as its dry weight of main shoots and spikes were also found to be the lowest. High Na+ uptake, lower K+/Na+ ratio, lower dry weight of main shoots and spikes and lower 100 grain weight were the main reasons for salt-sensitivity in Punjab-85. Dry weight of shoots, spikes and grain weight of SARC-3 under saline soil conditions was almost similar to the salt-sensitive variety Punjab-85 and could be classified as salt-sensitive. Flag leaf area decreased drastically due to salt stress in all the varieties and this could be a major cause for low yield. There was however, a very low linear correlation between the flag leaf area and the grain weight in pooled data for all the six wheat varieties.
Authors and Affiliations
M. Ahmad, B. H. Niazi, B. Zaman
Keywords
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