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这项研究测定了同一立地两个10龄橡胶无性系木材的纤维长度、基本密度、顺压强度、弯曲强度及冲击韧性,所有测定项目均表现海垦1优于PR107。纤维长度、基本密度及顺压强度的方差分析表明,品系间差异十分显著(P<0.01);纤维长度和基本密度的株间差异不显著,顺压强度则达到0.05显著水准。另测定了两个地区一些橡胶无性系2龄芽接树木材的纤维长度和基本密度,均表现品系间差异十分显著(P≤0.001),其广义遗传力的估算值(据小区),纤维长度为0.50及0.58,基本密度为0.58及0.72。
This study determined the fiber length, basis density, compressive strength, flexural strength and impact toughness of two 10-year-old clones of clones on the same site. All the measurements showed that HAK 1 was better than PR107. Analysis of variance of fiber length, basic density and compressive strength showed that there was significant difference between the two strains (P <0.01). There was no significant difference between fiber length and basic density, but the compressive strength reached 0.05 significant level. In addition, the fiber length and basic density of some 2-year-old budded tree species of rubber clones were measured. The results showed that there was significant difference (P≤0.001) between the two strains. The estimated value of broad heritability (according to plot) 0.50 and 0.58, the basic density of 0.58 and 0.72.