Dr Azam Borzouei (Assistant Professor, Nuclear Science and Technology Research Institute. Karaj, Iran)
Mutations induced by radiation with gamma rays has had a major role in improving the most of main agronomic traits in plants. In order to determine some stability indices related to wheat grain yield the fifth generation (M5) under salinity conditions, 15 selected lines from the fourth mutant generation (M4) together with two parents' genotypes (‘Arg’ and ‘Bam’) and two genotypes produced in Yazd region (‘Sivand’ and ‘Narin’) were planted under both conditions of non-stress (2 dsm-1) and salinity stress (10 dsm-1) in the research field of the National Salinity Research Centre (NSRC) in Yazd province. Analysis of variance for a complete random block design was performed on yield, components and the comparison of means was conducted by LSD test. Tolerant indices of mean productivity (MP), geometric mean productivity (GMP), stress tolerance index (STI), Stress stability index (SSI), Tolerance index (TOL) were calculated to investigation salinity. The results showed that, Line two (Arg-200, 246.67 g m-1) and one (Bam-150, 165.55g m-1) had the highest grain yield. Regarding the positive and significant correlation between grain yield in both conditions and indices of MP, GMP and STI, these indices were selected as the most desirable tolerance indices. According to three-dimensional graph Fernandez were introduced that lines one, two and eight as the most tolerant lines to salinity stress. The experiment results showed, indices of MP, GMP and STI are the most suitable indices for selection of lines tolerant to salinity. Lines one, two and eight had high grain yield under both conditions. So, according to the results lines one, two and eight can be introduced as stable lines and with high yield under salinity stress conditions and the fifth generation and it is recommended to introduce these three lines for cultivation in the sixth generation.
|Country or International Organization||Nuclear Science and Technology Research Institute. Karaj, Iran|
Dr Ali reza Askary Kelestanie (Ph. D Student of Nuclear Agriculture)
Dr Ali Eskandari (Assistant Professor, Nuclear Science and Technology Research Institute. Karaj, Iran) Dr Azam Borzouei (Assistant Professor, Nuclear Science and Technology Research Institute. Karaj, Iran) Dr S.Sanaz Ramezanpour (Associate Professor, Department of Biotechnology and Plant Breeding, Gorgan University of Agricultural Sciences and Natural Resources)