银川市几种绿化树种抗寒性比较

采用人工模拟低温处理,通过对樱花、樱桃、黄栌、胶东卫矛1年生休眠期枝条的游离脯氨酸、丙二醛(MDA)及可溶性糖含量的测定和冷冻后恢复萌芽试验,对它们的抗寒性进行分析与比较。结果表明,随着低温胁迫的加剧,4种灌木绿化树种的游离脯氨酸、丙二醛、可溶性糖含量大体呈上升趋势,萌芽数呈下降趋势,且3种生理指标测定结果与冷冻恢复萌芽试验的结果基本一致。4种灌木绿化树种的抗寒性强弱依次为黄栌 > 胶东卫矛 > 樱桃 > 樱花。  

Cold Resistance Comparison of Several Greening Species in Yinchuan City

The paper adopted artificially simulated low temperature to test the proline content, MDA content and insolutable sugar content in one-year-old dormant twigs of Cerasus yedoensis, Cerasus pseudocerasus, Cotinus coggygria and Euonymus kiautschovicus and conduct the recovered budding experiment after frozen. The analysis and comparison of their cold resistance showed that proline content, MDA content and insolutable sugar content of the four greening shrub species increased with decreasing temperature, and the number of sprouting buds reduced. The results of 3 physiological indicator testing were consistent with the results of recovered budding experiment after frozen. The cold resistance of the four species could be ordered from strong to poor as C. coggygriaE. kiautschovicusC. pseudocerasusC. yedoensis.