A Comparison on Cytoplasmic Vitrification and Freezing Point of Chinese Fir and Masson Pine Seeds
YU Fang-yuan, SHAO Lan, CHEN Shu-fen
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College of Forest Resources and Environment Naniing Forestry University, Nanjing 210037, China
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出版日期
2016-10-18
发布日期
2016-10-18
摘要
<正>结合中山陵园古树名术的相关数据,在对中山陵园风景名胜区的古树名木资源信息进行处理的基础上。利用Map Objects Java Standard Edition(简称MOJava)在Jbuilder 9.0开发环境中初步建立了中山陵园古树名木地理信息系统。该系统提供的古树名木资源信息可用于古树名木资源的管理、监测、合理利用及开展相关科学研究。
Abstract
The cytoplasmic vitrification and freezing temperature of Chinese fir and masson pine seeds were measured by using differential scanning calorimetry (DSC). And the relationship between formation of glassy state and lipid as well as sugar content was analyzed. The results showed as follows: (1) The glassy state was detected in the seeds of Chinese fir. Its cytoplasmic vitrification temperature (Tg) is--52.386=C. The freezing temperature of Chinese fir seeds is-34. 323 C. The glassy state was not detected in the seeds of masson pine. The freezing temperature of masson pine is--24. 826℃. (2) The gross lipid content in Chinese fir seeds is lower than that in masson pine seeds. The ratio of Oligosaccharide/Disaccharide(O/D value) in Chinese fir seeds is higher than that in masson pine seeds. These indicated that the lower lipid content and higher ()ligosaccharide content were beneficial for the formation of glassy state. (3) The moisture content is not correlated with the formation of glassy state.
YU Fang-yuan, SHAO Lan, CHEN Shu-fen.
A Comparison on Cytoplasmic Vitrification and Freezing Point of Chinese Fir and Masson Pine Seeds[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2006, 30(05): 1-4 https://doi.org/10.3969/j.jssn.1000-2006.2006.05.001