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SCREENING FOR SALT TOLERANCE IN WHEAT GENTOYPES AT AN EARLY SEEDLING STAGE

M.A. KHAN¹, S. YASMIN², R.  ANSARI¹,  M.U. SHIRAZI¹ AND M.Y. ASHRAF³

Abstract: Twenty-four wheat genotypes were screened for salt tolerance at an early seedling growth stages at 0, 100, 150 and 200 mM NaCl levels. Seedlings of each genotype were compared for their growth under saline conditions as a percentage of the control value. Experiments were conducted in plastic bowls with nylon net over which seed were placed for germination. The bowls were kept in an incubator at 25 ± 5^oC in dark for 72 hours then they were exposed to 4000-lux light intensity for photosynthetic activity. Seedlings were harvested after 192 hours and their shoot and root lengths and dry weights were recorded. Results indicated that the wheat genotypes V-8001, LU26s, Bhittai, C-228, KTDH, KTDH-22, DS-17 are tolerant at germination and seedling stage in most of the growth parameters studied.

¹Plant Physiology Division, Nuclear Institute of Agriculture (NIA) Tandojam, Pakistan

²Institute of Botany, University of Sindh Jamshoro, Pakistan.

³Nuclear Institute for Agriculture and Biology, P.O. Box 128, Jhang Road, Faisalabad, Pakistan.