Potassium-induced freezing tolerance is associated with endogenous abscisic acid, polyamines and soluble sugars changes in grapevine

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• 作者：Rouhollah Karimi^a ; ^b ; ^{R.Karimi@malayeru.ac.ir} ; ^{Rouholahkarimi@gmail.com}
• 关键词：Cold hardiness ; Grapevine ; Nutrition ; Phenolic compound ; Sugars ; Yield
• 刊名：Scientia Horticulturae
• 出版年：2017
• 出版时间：27 January 2017
• 年：2017
• 卷：215
• 期：Complete
• 页码：184-194
• 全文大小：1023 K
• 卷排序：215

文摘

Potassium sulfate spray improved grapevine leaf abscission and periderm formation during acclimation phase. Throughout the hardening cycle freezing tolerance of all potassium treated vines considerably increased. Abscisic acid concentration changed with LT50 profile and always was higher in K2SO4 treated vines. Potassium sulfate considerably increased free polyamines, soluble sugars and phenolics concentration. Alleviation effect of K2SO4 on freezing stress was more effective at 3%.