Assessment of variation for NaCl tolerance in spring wheat (Triticum aestivum L.)

Tahira . Dept. of Plant Breeding and Genetics; Salam, A. . Dept. of Plant Breeding and Genetics

Assessment of variation for NaCl tolerance in spring wheat (Triticum aestivum L.)

2006

Tahira (University of Agriculture, Faisalabad (Pakistan). Dept. of Plant Breeding and Genetics) | Salam, A. (University of Agriculture, Faisalabad (Pakistan). Dept. of Plant Breeding and Genetics)

On the basis of root and shoot length the response of four-week-old wheat seedlings of 45 genotypes was assessed in three salinity levels i.e., control, 10 and 20 dS m-1, developed in solution cultures. The 45 genotypes responded differently to increasing salinity levels in the growing medium. The genotypes 18194-II and DN-4, which produced longer roots than those of LU- 26S, appeared as the most tolerant, whilst 18180-II, 18205-I and DN-18 as the most sensitive genotypes. The estimates of broad sense heritabilities for absolute root length were 0.52, 0.46 and 0.32 in control, 10 and 20 dS m-1 respectively, whilst those for relative root length were 0.23 and 0.28 in low and high salinities respectively.

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