南京林业大学学报（自然科学版）
南京林業大學學報（自然科學版）
남경임업대학학보（자연과학판）
JOURNAL OF NANJING FORESTRY UNIVERSITY(NATURAL SCIENCE EDITION)
2015年
3期
125-129
,共5页
石江涛%王丰%骆嘉言
石江濤%王豐%駱嘉言
석강도%왕봉%락가언
杂交鹅掌楸%应力木%解剖特征%FTIR%XRD
雜交鵝掌楸%應力木%解剖特徵%FTIR%XRD
잡교아장추%응력목%해부특정%FTIR%XRD
Liriodendron chinense×L. tulipifera%reaction wood%anatomical feature%FTIR%XRD
通过显微观察及傅里叶红外光谱和X－射线衍射光谱分析，对杂交鹅掌楸弯曲树干和倾斜树干的应力木特征进行了研究。结果表明：在弯曲树干中，应拉区的胶质木纤维含量极少，导管数、导管平均直径及组织比量与对应区和过渡区有明显差异；应拉区木材红外光谱特征与对应区和过渡区相似；应拉区中吸收强度比值（ I1505／I1739）大于对应区和过渡区，说明其木质素含量较高；应拉区和过渡区纤维素结晶度显著低于对应区。倾斜树干中表现出相反规律，应拉区富含胶质木纤维（26．1％），应拉区导管数、导管平均直径均小于过渡区木材；应拉区木材在波数1739 cm－1和1505 cm－1的吸收峰强度均低于对应区和过渡区木材；应拉区和过渡区纤维素结晶度明显高于对应区。据此认为杂交鹅掌楸应力木特征产生于倾斜生长的树干。
通過顯微觀察及傅裏葉紅外光譜和X－射線衍射光譜分析，對雜交鵝掌楸彎麯樹榦和傾斜樹榦的應力木特徵進行瞭研究。結果錶明：在彎麯樹榦中，應拉區的膠質木纖維含量極少，導管數、導管平均直徑及組織比量與對應區和過渡區有明顯差異；應拉區木材紅外光譜特徵與對應區和過渡區相似；應拉區中吸收彊度比值（ I1505／I1739）大于對應區和過渡區，說明其木質素含量較高；應拉區和過渡區纖維素結晶度顯著低于對應區。傾斜樹榦中錶現齣相反規律，應拉區富含膠質木纖維（26．1％），應拉區導管數、導管平均直徑均小于過渡區木材；應拉區木材在波數1739 cm－1和1505 cm－1的吸收峰彊度均低于對應區和過渡區木材；應拉區和過渡區纖維素結晶度明顯高于對應區。據此認為雜交鵝掌楸應力木特徵產生于傾斜生長的樹榦。
통과현미관찰급부리협홍외광보화X－사선연사광보분석，대잡교아장추만곡수간화경사수간적응력목특정진행료연구。결과표명：재만곡수간중，응랍구적효질목섬유함량겁소，도관수、도관평균직경급조직비량여대응구화과도구유명현차이；응랍구목재홍외광보특정여대응구화과도구상사；응랍구중흡수강도비치（ I1505／I1739）대우대응구화과도구，설명기목질소함량교고；응랍구화과도구섬유소결정도현저저우대응구。경사수간중표현출상반규률，응랍구부함효질목섬유（26．1％），응랍구도관수、도관평균직경균소우과도구목재；응랍구목재재파수1739 cm－1화1505 cm－1적흡수봉강도균저우대응구화과도구목재；응랍구화과도구섬유소결정도명현고우대응구。거차인위잡교아장추응력목특정산생우경사생장적수간。
The properties of reaction wood from bending and inclination stem in Liriodendron chinense× L. tulipifera was investigated by microscopic, FTIR and XRD. The results showed that in tension zone the gelatinous fiber ratio was the lowest and the number and mean diameter of vessel and tissue proportion was significant difference comparing with that in opposite and transition zone in bending stem. The IR characteristics in tension zone were similar to the opposite and tran?sition zone. The relatively ratio of I1 505/I1 739 was higher in tension zone than other two zones and indicated that it has higher lignin content. The cellulose crystallinity in tension and transition zone was observably lower than that in opposite. On the contrary, in tension zone the gelatinous fiber ratio was higher ( 26. 1%) and the number and mean diameter of vessel was decreased comparing to that in transition zone of inclination stem. The peaks intensity at 1 739 cm-1 and 1 505 cm-1 were decreased in tension zone than that in other two zones. This indicated that the hemicellulose and lignin content was lower in tension zone. The cellulose crystallinity in tension and transition zone was higher dramatically than that in opposite. All of these suggested that the properties of tension wood were affected by stem growth morphology in Lirioden?dron chinense×L. tulipifera.
