نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه اگروتکنولوژی، دانشکده کشاورزی، دانشگاه فردوسی مشهد، مشهد، ایران
2 شرکت دانش بنیان خوشه پروران زیست فناور، ساختمان مرکز تحقیقات بیوتکنولوژی کشاورزی، ، مشهد، ایران
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
This study was conducted in 2021 at the research farm of the Faculty of Agriculture, Ferdowsi University of Mashhad, using a split-plot design based on a randomized complete block design with three replications. The effects of signaling compounds on leaf senescence induction and assimilate remobilization in potatoes were investigated. The treatments included different spraying frequencies (once, twice, and three times) as the main plot, and signaling compounds (control, potassium silicate, monopotassium phosphate, nitric oxide, hydrogen peroxide, EDTA, and ethephon) as the sub plots. The results indicated that monopotassium phosphate, potassium silicate, and EDTA increased the total tuber yield by 60%, 45%, and 40%, tuber starch content by 19%, 26%, and 17%, and tuber dry weight by 14%, 19%, and 13% compared to control, respectively. Regarding leaf senescence induction, these compounds increased hydrogen peroxide levels by 50%, 18%, and 75%, and decreased leaf photosynthetic pigment content by 33%, 28%, and 37% compared to the control, leading to cell membrane degradation and accelerated leaf senescence. These results suggest that the targeted use of signaling compounds, especially potassium containing compounds in the final growth stages, can serve as an effective method to optimize potato yield and quality through more efficient allocation of photosynthetic materials to the tubers.
کلیدواژه‌ها [English]
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