The performance of single chromosome substitution lines of bread wheat subjected to salinity stress

Díaz De León, J. and Escoppinichi, R. and Geraldo, N. and Börner, A. and Röder, M. (2011) The performance of single chromosome substitution lines of bread wheat subjected to salinity stress. Cereal Research Communications, 39 (3). pp. 317-324. ISSN 0133-3720

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Abstract

The parents (the landrace Chinese spring (CS) and a synthetic hexaploids (S6x)) and 17 derived single chromosome substitution lines (SL) were grown in parallel in the field under non-saline (1.0 dSm⁻¹) and saline (12.0 dSm⁻¹) conditions, and evaluated for a set of phenotypic traits. The performance of CS indicated it to have borderline salinity tolerance with respect to all of the traits except for leaf area (for which it behaved in as a salinity sensitive type). The SL 4D was early in booting, ear emergence, flowering and maturity, while 5D and 2B SLs were both late. The 2B SL produce 33% more ears than CS. The 5D SL under-performed with respect to ear weight, grain number per ear, grain weight per ear and 1000-grain weight both under non-saline and saline conditions. Under saline conditions, four SLs (1A>5A>1D>2B) outperformed Cs for ear length, and six SLs (1D>6A>4B>3A>3B>3D) showed an improved grain weight. The grains produce by the 2B SL were smaller than those of CS. Leaf area developed better in four SLs (4D>2B>1A>7D) than in CS.

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