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has been cited by the following article:

• TITLE: The Physiological Basis of Heterosis for Potassium Uptake of Hybrid Millet

  AUTHORS: Zihui Liu, Binhui Liu, Hongmei Zhang, Guoliang Li, Yanmin Zhang, Xiulin Guo

  KEYWORDS: Hybrid Millet, Potassium Uptake, Heterosis, Physiological Characteristics

  JOURNAL NAME: American Journal of Plant Sciences, Vol.5 No.13, June 24, 2014

  ABSTRACT: Hybrid millet Zhang and its parental cultivars were studied for their potassium (K) uptake and accumulation characteristics and related physiological mechanisms. Hydroponic culture was performed with two K levels (i.e., high and low) set up. At high K level, hybrid millet showed heterobeltiosis in K accumulation and leaf K content, and it also had higher H+-ATPase activity, respiration rate, root oxidant activity and root K+ influx rate than its parental cultivars. All these lay the physiological foundation of heterosis for potassium uptake of hybrid millet. At low K level, the hybrid millet had a lower H+-ATPase activity and a higher K efflux rate than its parental cultivars, thus heterobeltiosis in K accumulation or leaf K content was not observed. Therefore, high level K fertilizer application is recommended for hybrid millet cultivation as it is favorable for hybrid millet to display heterosis in K uptake and K accumulation.