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通过在不同的低温弱光条件下，对８个代表性品种的冷害发生发展规律的研究，初步确定：１５℃／５℃（昼／夜）、光照强度４０００ｌｘ、光照时间８ｈ、处理１５天，是耐低温弱光品种的适宜选择压力。在此条件下，耐低温品种不出现伤害症状和落叶现象，叶片生长速度快；不耐低温品种生长缓慢，落叶严重，且生长点呈黑褐色，以至干枯。品种间差异显著。同时，耐低温品种叶片叶绿素含量增加，而不耐低温品种叶绿素含量下降。这一结果为进一步完善耐低温弱光品种的鉴定方法提供可靠的依据
Through the research on the development of chilling damage of 8 representative cultivars at different low temperature and low light conditions, it was preliminarily determined that: 15 ℃ / 5 ℃ (day / night), light intensity 4000lx, light time 8h, treatment 15 days, Is low temperature and weak light varieties of the appropriate choice of pressure. Under these conditions, low temperature tolerant varieties did not show any injury symptoms and deciduous leaves, and leaf growth rate was fast. Infertile low temperature varieties grew slowly with severe deciduous leaves, and the growth point was dark brown and even dry. Significant differences between varieties. At the same time, chlorophyll content of low temperature resistant varieties increased, but chlorophyll content of low temperature tolerant varieties decreased. This result provides a reliable basis for further improving the identification methods of low temperature resistant and weak light varieties