Effective Stability Index for Selecting Wheat Genotypes under Saline Conditions

Document Type : Research Paper

Authors

Member of Scientific Staff, National Salinity Research Center, Yazd, Iran

Abstract

To determine various stability indices related to grain yield of wheat genotypes in different saline conditions, an experiment was conducted at the Salinity Research Farm, National Salinity Research Center. Treatments consisted of 14 wheat genotypes that were evaluated under saline and non-saline conditions. Electrical conductivities of the irrigation water used for saline and non-saline conditions were 10.0 and 2.5 dS/m, respectively. Results showed that grain yield and kernel per spike under non-saline conditions were significantly higher than those under saline conditions, for all genotypes. There were no significant differences between saline and non-saline conditions with regard to thousand kernel weight. Grain yields of the genotypes were significantly different in both conditions. Genotype No. 5 (PF70354/BOW) produced the highest grain yield under saline and non-saline conditions by producing 723.44 and 976.56 g.m-2, respectively. The correlations among grain yield in saline and non-saline conditions, mean productivity (MP), and Salinity Tolerance Index (STI) were significant. Thus, STI could be considered as an effective index for selecting wheat genotypes under different saline conditions.

Keywords

References

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Iranian Journal of Soil Research
Volume 24, Issue 3
March 2011
Pages 283-290

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