| 水分胁迫下小麦幼苗可溶性低聚糖特征表现与抗旱性关系初探 |
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| 引用本文： | 路苹,柴丽娜.水分胁迫下小麦幼苗可溶性低聚糖特征表现与抗旱性关系初探[J].北京农学院学报,1996,11(2):13-18. |
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| 作者姓名： | 路苹 柴丽娜 |
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| 作者单位： | 北京农学院中心实验室 |
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| 摘 要： | 以６个不同抗旱性冬小麦品种为材料，研究水分胁迫对幼苗体内可溶性糖组分和含量的影响。用ＰＥＧ６０００水溶液模拟水分胁迫条件，ＨＰＬＣ测定可溶性糖组分和含量。结果表明，小麦幼苗含有可溶性低聚糖、蔗糖、葡萄糖、甘露糖和果糖等，可溶性低聚糖是其中主成分。水分胁迫下各糖组分含量均增加，其可溶性低聚糖含量呈规律变化，抗旱性强的小麦品种，可溶性低聚糖含量增加与胁迫时间呈正相关。可溶性低聚糖可能是小麦幼苗阶段主要的糖类渗透调节物质。
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| 关 键 词： | 小麦幼苗 水分胁迫 可溶性低聚糖 抗旱性 渗透调节 |
Preliminary Study on Change of Soluble Polyaccharide and its Relationships with Drought Resistance in Winter Wheat Seedlings under Water Stress |
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| Lu Ping, Chai Lina, Liu Zhongping, Yu Tongquan, Di yian.Preliminary Study on Change of Soluble Polyaccharide and its Relationships with Drought Resistance in Winter Wheat Seedlings under Water Stress[J].Journal of Beijing Agricultural College,1996,11(2):13-18. |
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| Authors: | Lu Ping Chai Lina Liu Zhongping Yu Tongquan Di yian |
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| Abstract: | The influence of water stress on soluble sugar and their composition in theirseedlings was studied using 6 wheat cuItivars with different drought resistance. Wheatseedlings were treated with PEG 6000,composition and content of the soluble sugar were anal-ysed with HPLC. The results indicated that wheat seedlings contained saccharose,glucose,fructose,mannose and polyaccharide. The soluble polyaccharide was main component part in to-tal sugar.The soluble sugar was increased under water stress. The soluble polyaccharide wasmarkedly changed with the stress time,the greater the correlation,the stronger drought resis-tance, It may be primary osmoregulation matter in wheat seedlings. |
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| Keywords: | Wheat seedlings Water stress Soluble polyaccharide Drought resistance Os-moregulation |
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