盐胁迫下菊芋糖代谢过程研究
毕业论文关键词：菊芋；盐胁迫；形态学；总糖；还原糖
The study of the sugar metabolism of Jerusalem artichoke under salt stress
Abstract：In order to illustrate the physiological mechanism of Jerusalem artichoke’s sugar metabolism under salt stress, the study was carried out to research the dynamic change law of accumulation and the distribution pattern of sugar in plant tissue and find out the intrinsic reason of the salt adversity to reduce the production of the artichoke tubers. The study comprehensively compared the Jerusalem artichoke (N1) growth in soil under low salt and high salt by analyzing morphological changes (plant height, stem diameter, root length, fresh weight, dry weight) from May to December and the sugar contents (soluble sugar, reducing sugar, glucose, sucrose, fructose, kestose, nistose, F-fructofuranosylnystose) differences in different plant tissues of Jerusalem artichoke. The results showed that plant height, stem diameter and root length of Jerusalem artichoke under high salt were significantly lower than that under low salt. The time of dry matter accumulation of above-ground Jerusalem artichoke under high salt was shorter than that under low salt. In addition, Jerusalem artichoke under high salt accumulated less dry matters than low salt plants. Comparing to low salt plants, Jerusalem artichoke plants under high salt had lower content of soluble sugar and reducing sugar, but total sugar content of stem was higher. The glucose and sucrose content and the accumulation in tubers of fructose, kestose, nistose, F-fructofuranosylnystose of Jerusalem artichoke plants under high salt were slightly lower than plants under low salt. In conclusion, high salt stress not only greatly reduced the above-ground dry matter accumulation of Jerusalem artichoke, and it also changed the distribution and of sugar and dynamic changes of dry matter accumulation in the plant tissues. Besides, high salt stress restricted the conversion of reducing sugar in the tuber and finally reduced production.
Key words：Jerusalem artichoke；salt stress；morphology；soluble sugar；reducing sugar
目录
摘要 1
关键词 1
Key words 2
前言 2
1、材料与方法 2
1.1实验材料 2
1.2实验地点 2
1.3实验器材 2
1.4实验方案 2
1.5数据处理 3
2、结果分析 3
2.1盐胁迫下菊芋形态学特征变化 3
2.1.1菊芋在不同盐胁迫下的株高变化 3
2.1.2菊芋在不同盐胁迫下的茎粗变化 3
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