نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشجوی کارشناسی ارشد، دانشکده کشاورزی، دانشگاه زنجان
2 استادیار، دانشکده کشاورزی، دانشگاه زنجان
3 دانشیار، دانشکده کشاورزی، دانشگاه زنجان
4 دانشجوی دکتری، مرکز تحقیقات گیاهان دارویی باریج اسانس، شرکت داروسازی باریج اسانس، کاشان
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
The purpose of this experiment was to investigate the effect of deficit irrigation and chitosan on some physiological traits of Mentha spicata L. This experiment was conducted in a completely randomized block design in a split plot arrangement with three replications in University of Zanjan. The experimental treatments were irrigation at two levels (100% and 60% field capacity) as the main factor and chitosan treatment at three levels (0, 50 and 100 mg/l) was considered as a sub factor. The results showed that spraying with chitosan increased chlorophyll content. The highest chlorophyll content (1.240 mg gr-1 f.w) was obtained at 100 mg/l chitosan under complete irrigation conditions (100% field capacity). The spraying application of 100 mg/l chitosan and deficit irrigation conditions (60% field capacity) caused the highest amount of carotenoids (0.45 mg gr-1 f.w), phenol (9.989 mg gr-1 f.w), flavonoid (6.993 mg gr-1 f.w) and proline (23.96 mol gr-1 fw). The highest level of antioxidant activity (91.16%) was observed in 50 mg/l chitosan under deficit irrigation. Also, deficit irrigation and chitosan had a positive effect on the essential oil yield, so that the highest essential oil yield (10.44 kg/h) was obtained at 100 mg/l chitosan concentration and under deficit irrigation conditions. Overall, the results showed that chitosan treatment had positive effects on drought stress and non-stress conditions and improved the negative effects of drought stress.
کلیدواژهها [English]