نوع مقاله : علمی پژوهشی
نویسندگان
1 گروه آگروتکنولوژی، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران، ایران
2 گروه زراعت، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران، ایران
3 گروه آگروتکنولوژی، دانشکده کشاورزی، دانشگاه تربیت مدرس، تهران، ایران.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
To investigate the effect of foliar application of iron chelate on the medicinal plant borage (Borago officinalis) under drought stress conditions, a factorial experiment was conducted in a completely randomized design (CRD) with three replications under controlled conditions in the growth chamber of the Agronomy Department, Faculty of Agriculture, Tarbiat Modares University. In this experiment, the studied factors included different irrigation regimes at four levels (optimal irrigation, mild water deficit stress, moderate water deficit stress, and severe water deficit stress), corresponding to 20%, 40%, 60%, and 80% depletion of available water in the root zone, respectively. Foliar application of 9% iron chelate was performed at five levels (0, 75 ppm, 150 ppm, 225 ppm, and 300 ppm). The results showed that foliar application of 150 ppm nano iron chelate under optimal irrigation conditions increased plant height by 12.53% compared to the control treatment. The highest number of flowers was observed with foliar application of 75 ppm iron chelate under mild water deficit stress, producing an average of 29.67 flowers. Foliar application of 150 ppm iron chelate under optimal irrigation conditions resulted in the highest quantum efficiency of photosystem II. However, under mild, moderate, and severe water deficit stress, foliar application of 75 ppm iron chelate demonstrated the highest quantum efficiency of photosynthesis.
کلیدواژه‌ها [English]
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