福建引种火炬松木材管胞形态特征的变异  

Variation Analysis in Tracheid Morphological Features of Loblolly Pine Provenances Introduced to Fujian Province in China

作　　者：徐有明[1] 张水木 刘秀群[1] 詹福兴 张东明 

机构地区：[1]华中农业大学,武汉430070 [2]福建省南屿林场

出　　处：《东北林业大学学报》2000年第4期36-40,共5页Journal of Northeast Forestry University

基　　金：国际科学基金!(IFS D/2260-2)

摘　　要：对福建闽候南屿国有林场引种３１个种源的火炬松木材的管胞形态特征变异情况进行了试验分析、结果表明：①种源间管胞特征值中仅早晚材管胞长度及其加权值、腔径比差异显著。②管胞形态特征值种源间个体变异大于种源间的变异。③基本密度与单位面积细胞数目、晚材率、壁厚、长宽比、壁腔比呈极显著正相关，与管胞宽度、腔径比呈极显著负相关，与管胞长度的正相关不显著。④年轮宽度与管胞长度、长宽比、基本密度呈极显著负相关，与晚材率呈显著负相关，与单位细胞数目、壁厚呈负相关，与管胞宽度呈显著正相关，与腔径比正相关不显著。⑤纬度与管胞长度、宽度、直径、腔径比里负相关，与管胞壁厚、壁腔比呈正相关：经度与管胞长度、宽度、直径、腔径比呈正相关、与管胞壁厚、壁腔比呈负相关。The variations of tracheid formal features of 31 exotic loblolly pine provenances planted in Nanyu Forest Farm of Fujian province of China were studied in this paper. The results were as follows: ①Distinct differences were found to exist only in tracheid length (earlywood, latewood and the whole ring) and in tracheid width-diameter ratio among 31 provenances.② Variation of tracheid formal features between individual trees within each of these provenances was far greater than differences among provenances. ③Basic density was greatly distinct positively related to the number of cells per square millimeter. percentage of latewood. tracheid wall thickness, tracheid length-width ratio. tracheid double wall thickness-diameter ratio, and not significant to tracheid length; basic density was significant negatively related to tracheid width. tracheid diameter-width ratio. ④The annual ring width (the 6-7 ring) was greatly distinct negatively related to tracheid length. tracheid length-width ratio, basic density. and distinct negatively related to percentage of latewood. It was negatively related to tracheid wall thickness and number of cells per square millimeter but not significant at 0.05 level. It was also distinct positively related to tracheid width, and not significantly positively related to tracheid diameter. ⑤Tracheid length, tracheid width. tracheid diameter and tracheid diameter-width ratio were negatively correlated with the altitudes of these local provenances which positively related to tracheid wall thickness and tracheid wall thickness-diameter ratio. The longitude positively related to tracheid length. tracherid width. tracheid diameter and tracheid diameter-width ratio. and negatively related to tracheid wall thickness arid tracheid wall thickness-diameter ratio.

关 键 词：火炬松 引种种源 管胞形态特征 变异 福建 

分 类 号：S781.1[农业科学—木材科学与技术] S791.225[农业科学—林学]