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Pakistan Journal of Biological Sciences
Year: 1999  |  Volume: 2  |  Issue: 3  |  Page No.: 693 - 696

Intravarietal Variability in Wheat Grown under Saline Conditions

Mohammad Jamal Khan, H. Rashid, A. Rashid and R. Ali    

Abstract: Performance of nine selected wheat cultivars (Triticum aestivum L.) was studied during 1995-1996 under saline field environments at village Gundhari, distt. Nowshera. Site soil is recent river alluvium, sandy loam to clay loam in texture, slightly to highly saline and irrigated with tubewell water of 4 dS m–1. Two adjacent fields were surveyed by EM 38 at 2×2 m to identify areas of uniform salinity. Increase of root zone salinity decreased progressively all the plant traits including grain yield and yield component. Grain and straw yield were reduced by 69 and 64 percent respectively at the highest salinity level. Salinity tolerance ranking of cultivars based on absolute grain yield was SARC 3 > Bakhtawar 92 > Kharchia 65 > Blue Silver > SARC 1 > WS 10 > Mutant 1 > KTDH 10 > TW 161. Leaf Na increased, K and K/Na ratio decreased significantly with increase of root zone salinity. Sodium exclusion and K/Na discriminatory accumulation in leaf had contributed salt tolerance to wheat crop but these relationship could not be established in all cultivars.

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