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مقالات فارسیISIکنفرانسهاژورنالها

Cold and Drought Cross-Acclimation Enhance Freezing Tolerance of Chickpea (Cicer arietinum L.)

محل انتشار: مجله علوم و فناوری کشاورزی، دوره: 25، شماره: 1
سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 58

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لینک ثابت به این مقاله:
https://civilica.com/doc/1816041

شناسه ملی سند علمی:

JR_JASTMO-25-1_011

تاریخ نمایه سازی: 22 آبان 1402

چکیده مقاله:

Cross-acclimation of mild drought stress and cold acclimation may additionally increase the chickpea’s cold tolerance due to transferring sowing date from spring to winter in Mediterranean high lands. Two weeks after sowing in greenhouse, chickpea seedlings were subjected to the following treatments in a controlled environment: (i) Well-Watered under an optimum temperature regime (WW); (ii) Well-Watered under a Cold temperature regime (WWC); (iii) Drought Preconditioned under an optimum temperature regime (DP); and (iv) Drought Preconditioned under a Cold temperature regime (DPC). After three-week acclimation period, plants were frozen on the thermogradient freezer, then, recovered for three weeks in a greenhouse. In the acclimation period, with decreasing temperatures, a clear decrease of the electrolyte leakage (EL) were observed for both genotypes: ۵۱% for cold tolerant MCC۲۵۲ and ۳۶% for cold sensitive MCC۵۰۵. Cold acclimation induced the greatest accumulation of proline and MDA contents (about ۷۵% for both genotypes) and drought preconditioning most consistently induced an increase in soluble carbohydrate content (۲۵% for MCC۲۵۲ and ۵۱.۷% for MCC۵۰۵) during the acclimation period. The survival percentage increased ۹.۳% for MCC۲۵۲ and ۲۱.۲۵% for MCC۵۰۵ by both cold and drought acclimation under freezing conditions. Generally, drought preconditioning had a synergistic effect on the cold acclimation period to improve freezing tolerance (as indicated by the lowest LT۵۰el and LT۵۰su) and leading to an increase in the freezing tolerance for the cold sensitive genotypes (MCC۵۰۵). Thus, the greatest gains in freezing tolerance for both genotypes were associated with cross-acclimation treatment (DPC).

کلیدواژه ها:

Climate changes ، Cold acclimation ، Drought precondition ، Physiological and biochemical changes ، Shifting sowing date.

نویسندگان

N. Moghimi

Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Islamic Republic of Iran.

A. Nezami

Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Islamic Republic of Iran.

M. Khajeh-Hosseini

Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Islamic Republic of Iran.

H. R. Khazaei

Department of Agrotechnology, Faculty of Agriculture, Ferdowsi University of Mashhad, Mashhad, Islamic Republic of Iran.

J. Nabati

Research Center for Plant Sciences, Ferdowsi University of Mashhad, Mashhad, Islamic Republic of Iran.

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