نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه اصلاح نباتات و بیوتکنولوژی، دانشکده کشاورزی، دانشگاه زابل، زابل، ایران
2 گروه اصلاح نباتات و بیوتکنولوژی دانشکده کشاورزی دانشگاه زابل
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
Plant growth regulators, such as salicylic acid play an important role in plant stress tolerance and reduce the adverse effects of stress. In order to determine the effect of application of salicylic acid on some of the traits of two varieties of mung bean under the drought stress, the experimental as a split-split plot based on randomized complete blocks design with three replications were carried out in Hirmand city. The experimental treatments include drought stress as the main factor at three levels (irrigation after 70, 120 and 180 mm evaporation from the surface of the class A evaporation pan), sub-factor including two varieties of Sistan and Parto and sub-sub-plot including foliar spraying at levels of 0, 0.5 and 1 mM of salicylic acid. The results showed that the effects of stress, variety and salicylic acid on all studied traits were significant. Drought stress reduced yield and its components in two varieties. This yield reduction in Parto was about 5% less than Sistan. Under drought stress, increased proline and carotenoid contents. The highest increase in proline (77%) and carotenoid (48.5%) were in Parto cultivar under stress. Application of salicylic acid improved all traits, including grain yield, so that application of 0.5 mM concentration under moderate stress increased yield by 13%. There weren't significant differences between cultivars in salicylic acid consumption. Based on the results, Parto variety has performed better than the local variety for genetic reasons and the application of 1 mM salicylic acid has increased the plant resistance to stress.
کلیدواژهها [English]
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