نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجو
2 استاد گروه اصلاح و بیوتکنولوژی، دانشکده کشاورزی، دانشگاه زابل
3 استاد گروه اصلاح نباتات کشاورزی دیم کشور
4 هئیت علمی دانشگاه زابل
5 گروه اصلاح نباتات و بیوتکنولوژی، دانشکده کشاورزی، دانشگاه زابل
6 عضو هیات علمی-آموزش عالی سراوان
چکیده
کلیدواژه‌ها
عنوان مقاله [English]
نویسندگان [English]
Abstract
Soil salinity is one of the most important abiotic stresses that severely reduces the yield and quality of the crop. Assessing the tolerance of crops to environmental stresses is an important factor in selecting them for cultivation in different conditions. In this regard evaluation and identification of wheat genotypes tolerant to salinity stress using stress tolerance indices and changes in some biochemical parameters, Experimental In completely randomized block design, with repeated three times. Factors included salinity at three levels (zero (control), 9 dS and 12 dS) and 20 genotypes of native Iranian wheat. The results of this experiment showed that with increasing salinity stress, the amount of lipoxygenase, TBARM and carotenoids increased in all genotypes, but with increasing salinity level from 9 to 12 ds had a decreasing trend in some genotypes, however, in some genotypes, the salinity level increased with increasing salinity. Also, with increasing salinity stress, the amount of protein and proline concentration in a number of genotypes to a salinity level of 9 dS increased, but some genotypes showed a significant decrease with increasing salinity from 9 to 12 dS. Correlation analysis between indices and mean yield under normal and salinity conditions showed that all four indices are suitable for screening genotypes. Due to these indices and high yield in both environments as well as the results of biochemical properties evaluation, the best salinity tolerant genotypes were G2, G11, G86, G109, G209 and G151 genotypes.
کلیدواژه‌ها [English]
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