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花粉保存能力差异是影响花粉谱准确性的重要因素之一,采用KMnO4溶液和HNO3溶液作为氧化剂,模拟自然环境氧化条件对油松花粉保存影响情况。结果表明:同一KMnO4溶液浓度条件下,随时间延长油松花粉完好率呈下降趋势;浸泡相同时间,随KMnO4溶液浓度增大油松花粉完好率亦明显下降.经68%HNO3溶液浸泡18 h后,残留的完好花粉外壁变薄,纹饰变模糊,24 h后花粉几乎完全被溶解.一般认为油松花粉保存能力较强,而经2%KMnO4溶液和68%HNO3溶液处理后,发现在短时间内就足以使油松花粉大量破碎或溶解,表明氧化环境对油松花粉保存影响强烈.氧化环境对油松花粉腐蚀作用强于碱性环境.
Pollen storage ability difference is one of the important factors that affect the accuracy of pollen spectrum. KMnO4 solution and HNO3 solution were used as oxidants to simulate the influence of natural conditions on pollen preservation. The results showed that under the same concentration of KMnO4, the intact rate of pollens of Pinus tabulaeformis decreased with the increase of KMnO4 concentration at the same time, and the intact pollination rate of Pinus tabulaeformis decreased with the concentration of KMnO4 solution at the same time. After being soaked in 68% HNO3 solution for 18 h , Leaving the intact pollen wall thinning, ornamentation becomes fuzzy, after 24 h pollen is almost completely dissolved.It is generally believed that the pollen of Pinus tabulaeformis preservation ability is strong, and after 2% KMnO4 solution and 68% HNO3 solution treatment, found in a short time Within enough to make a large number of broken or dissolved Pinus tabulaeformis pollen, indicating that the oxidative environment of pine pollen strongly affected the oxidative environment of pine pollen corrosion is stronger than the alkaline environment.