蓝桉地理种源试验

Provenance Trial of Eucalyptus globulus Labill.

蓝桉、直干蓝桉和双肋蓝桉3个亚种的地理种源试验的4a试验结果表明,不同亚种之间生长速率的差异不显著,各亚种内的不同地理种源之间,在生长速率和对环境的适应能力方面存在显著的遗传变异。在亚种水平上,蓝桉的材积生长速率高于双肋蓝桉和直干蓝桉。蓝桉和双肋蓝桉的最佳种源及用作对照的云南早期引种的蓝桉在生长速率方面无显著差异;新引种的直干蓝桉最佳种源与当地采种的直干蓝桉在材积生长上亦无显著差异。

Provenance trials of Eucalyptus globulus Labill. were conducted in Jindian Forest Farm, Yunnan Province. 3 subspecies: Eucalyptus globulus Labill. ssp. globulus Kirkp., E. globulus Labiil. ssp. bicostata Kirkp. and E. globulus Labill. ssp. maidenii Kirkp. were included. The 4 years results showed that there were no statistically significant differences between the 3 subspecies in growth rates, but there were significant differences between provenances of each subspecies in growth rates and adaptability to the environment. Among the subspecies, globulus was the highest in growth rates, followed by bicostata and maidenii. Leperena provenance was the highest in growth rates of globulus, while 12132 and 9539 were the highest of maidenii and bicostata respectively. No significant differences were found between the best provenances of all the subspecies and the controls.