The Stimulation Effects of N^+ Ion Beam on Liquorice and Its Influence on Water Stress  

作　　者：魏胜林 刘竞男 吴李君 王家宝 余增亮 

机构地区：[1]Key Laboratory of Ion Beam Bioengineering, Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China School of City Science, Soochow University, Suzhou 215123, China [2]Key Laboratory of Ion Beam Bioengineering, Institute of Plasma Physics, Chinese Academy of Sciences, Hefei 230031, China

出　　处：《Plasma Science and Technology》2006年第2期247-252,共6页等离子体科学和技术（英文版）

基　　金：supported by the Chinese National "863" Project of "Sand Treating Technology for Plant Improvement by Ion Beam Combined with New Material" (No. 2002AA327070)

摘　　要：We have developed a large number of exocrine glands on liquorice leaves and facilitated polysaccharide secretion. Liquorice polysaccharide possesses stronger bound water affinity to gaseous water compared with sucrose and glucose. Our results show that the bound water affinity of liquorice polysaccharide to gaseous water is 49.75% higher than glucose （p〈0.01）. With N^＋ implantation （total dosage of 4.68×10^16 ions/cm^2 and energy of 20 keV） into dry liquorice seeds, both the bound water affinity to gaseous water and the bound water content of dry liquorice leaf can be significantly increased 30.24% （p 〈 0.01） and 36.51% （p 〈 0.01） respectively compared with the sham-irradiated seeds. Meanwhile, with these parameters chosen for N^＋ implantation into dry liquorice seeds, the leaf polysaccharide content under water stress （ψw=-1.5 MPa） can increase significantly （p 〈 0.05） and the plant growth can also improve significantly （p 〈 0.05）.We have developed a large number of exocrine glands on liquorice leaves and facilitated polysaccharide secretion. Liquorice polysaccharide possesses stronger bound water affinity to gaseous water compared with sucrose and glucose. Our results show that the bound water affinity of liquorice polysaccharide to gaseous water is 49.75% higher than glucose （p〈0.01）. With N^＋ implantation （total dosage of 4.68×10^16 ions/cm^2 and energy of 20 keV） into dry liquorice seeds, both the bound water affinity to gaseous water and the bound water content of dry liquorice leaf can be significantly increased 30.24% （p 〈 0.01） and 36.51% （p 〈 0.01） respectively compared with the sham-irradiated seeds. Meanwhile, with these parameters chosen for N^＋ implantation into dry liquorice seeds, the leaf polysaccharide content under water stress （ψw=-1.5 MPa） can increase significantly （p 〈 0.05） and the plant growth can also improve significantly （p 〈 0.05）.

关 键 词：N^＋ implantation LIQUORICE polysaccharide of liquorice bound water water stress 

分 类 号：O539[理学—等离子体物理]