巴西橡胶树抗风品系木材纤维的解剖特征

Anatomical Characteristics of Wood Fibers of Cultivars of Hevea brasiliensis with Different Wind-Resistance

在4个抗风品系和7个弱抗风品系之间,对巴西橡胶树成年树主干木材纤维长宽比值、壁腔比值,以及横切面上胶质纤维分布等特征,分别进行了比较.结果表明:与弱抗风品系相比较,抗风品系木材纤维较粗短,壁较薄,腔径较大;胶质纤维在木材横断面上数量较多且较均称地分布.试验从解剖学方面显示抗风品系成年树主干木材的韧性较弱抗风品系的强.

This paper studied the wood fiber characteristics, including length/width ratio, wall/lumen ratio, gelatinous fiber quantity and distribution etc, of the bearing tree trunks from 4 windresistant cultivars and 7 weakly windresistant cultivars of Hevea brasiliensis. The results showed that, compared with ones of the weakly windresistant cultivars,the wood fibers of the windresistant cultivars are shorter,wider,wallthinner and lumenwider;The gelatinous fibers are more numerous and more evenly distributed around the piths on the cross sections. Anatomy experiments indicated that windresistant cultivars have tougher trunk woods of bearing trees than weakly windresistant cultivars.