Evaluation of salt tolerance based on morphological and yield traits in wheat cultivars and mutants
2007
Asadi, A.A. (Science and Technology Research Inst., Karaj (Iran)) | Khiabani, B.N. (Agriculture, Medicine and Industry Research School, Karaj (Iran))
To evaluate yield and salinity tolerance of twenty-five wheat cultivars and mutants, an experiment in partially balanced lattice design (5 x 5) was conducted with two replications and under two conditions at two field locations. Significant differences were observed in plant height, flag leaf node until spike distance, grain length, 1000 grain weight, harvest index and hectoliter weight under normal condition. Likewise under salinity, significant differences were observed for flag leaf area, number of fertile tiller, plant height, spike length, flag leaf node unit spike distance, number of grain per plant, 1000 grain weight and hectoliter weight. Salinity decreased many of traits in mutants as well as cultivars. T-66-58-6 (mutant of Tabassi) showed yield stability across normal and saline conditions. Path, stepwise regression and multiple regression analysis indicated that biomass and harvest index had positive direct effect on yield for yield components under either condition.
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