The effect of ice nucleation active bacteria on cold resistance of apricot flower organs. [Chinese]

  • Yang J
  • Meng Q
  • Peng W
  • et al.
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Abstract

A study was conducted to determine the hardiness of apricot (cultivars Youyi and Longwangmao) flower organs against cold temperatures. The effect of ice nucleation active (INA) bacteria on cold resistance of apricot flower organs was also determined. Youyi showed higher cold resistance than Longwangmao. Corollas had the highest cold resistance followed by stamens then by gynoeciums. Inoculation with INA bacteria increased relative electrical conductivity, permeability of cell membrane, browning, and malonaldehyde content. On the other hand, INA bacterial inoculation decreased superoxide dismutase and peroxidase activities. The treated flower organs showed symptoms of serious frost at -2--3 deg C, and had supercooling points of -2 deg C higher than the control. The results showed that INA bacteria is a major factor that incites frost damage to apricot flower organs

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APA

Yang, J., Meng, Q., Peng, W., Li, S., Sun, F., & Zhao, T. (2002). The effect of ice nucleation active bacteria on cold resistance of apricot flower organs. [Chinese]. Acta Horticulturae Sinica, 29(1), 20–24.

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