CAJ | 학술논문

【目的】评价盐胁迫下红鳞蒲桃（Syzygizanhancei ）苗木的生理耐受性。【方法】选择当年生红鳞蒲桃盆栽苗木为材料，研究6种 NaCl盐分浓度（0％、0．2％、0．4％、0．6％、0．8％、1．0％）下红鳞蒲桃幼苗高生长、地径生长、叶片质膜透性、游离脯氨酸含量、可溶性糖含量、过氧化氢酶（CAT）活性、叶绿素含量的变化特征。【结果】随着 NaCl浓度的增加，红鳞蒲桃苗木的高增长量逐渐降低，在浓度0．4％时下降显著；NaCl浓度对苗木的地径增长量影响不大；细胞质膜透性对盐胁迫具有较强的耐性，NaCl浓度在0．8％以下时，叶片的相对电导率差异不显著；游离脯氨酸和可溶性糖含量在 NaCl 浓度为0．4％时显著增加，其后维持在一定水平；CAT酶活性对盐胁迫较为敏感，在浓度0．2％时即显著增强；叶绿素含量则随着 NaCl浓度的增加表现出先升后降的变化趋势。【结论】0．4％ NaCl浓度是影响红鳞蒲桃苗木生理特性的关键。
【목적】평개염협박하홍린포도（Syzygizanhancei ）묘목적생리내수성。【방법】선택당년생홍린포도분재묘목위재료，연구6충 NaCl염분농도（0％、0．2％、0．4％、0．6％、0．8％、1．0％）하홍린포도유묘고생장、지경생장、협편질막투성、유리포안산함량、가용성당함량、과양화경매（CAT）활성、협록소함량적변화특정。【결과】수착 NaCl농도적증가，홍린포도묘목적고증장량축점강저，재농도0．4％시하강현저；NaCl농도대묘목적지경증장량영향불대；세포질막투성대염협박구유교강적내성，NaCl농도재0．8％이하시，협편적상대전도솔차이불현저；유리포안산화가용성당함량재 NaCl 농도위0．4％시현저증가，기후유지재일정수평；CAT매활성대염협박교위민감，재농도0．2％시즉현저증강；협록소함량칙수착 NaCl농도적증가표현출선승후강적변화추세。【결론】0．4％ NaCl농도시영향홍린포도묘목생리특성적관건。
Objective]Syzygizan hancei is one of dominant tree species of natural vegetation in Guangxi coastal.The physiological resistant potential of seedlings under salt stress is eval-uated in this paper.[Methods]One?year?old potted S.hancei seedlings were selected and trea-ted with six NaCl concentrations (0%,0.2%,0.4%,0.6%,0.8% and 1.0%).The variation characteristics of height growth,ground diameter growth,and leaf membrane permeability, content of free proline,content of soluble sugar,catalase activity and chlorophyll content of seedlings were studied.[Results]The results showed that with the increase of NaCl concen-trations,the height increment of seedlings gradually reduced.The decrease was significant in 0.4% NaCl treatment.However,there were no significant differences in ground diameter in-crement among different NaCl concentrations treatments.The leaf membrane permeability of seedling had high salt?tolerance ability.The relative conductivity of seedling leaves were no significant differences under 0.8% concentration treatments.The contents of free proline and soluble sugar were obviously increased in 0.4% NaCl treatment and then kept within a cer-tain range.CAT activity was sensitive to salt stress and evidently strengthened in 0.2% NaCl treatment.The content of chlorophyll increased first and then decreased with the increase of NaCl concentrations.[Conclusion]0.4% NaCl was the key concentration,which affected the physiological properties of Syzygizan hancei seedlings.