摘要： 对3地点30个以尾叶桉为主要亲本的桉树家系进行1.5,2.5,3.5a的性状分析与适应性分析,结果表明:生长性状在家系、地点和家系×地点交互效应上均存在极显著差异,试验可选择出生长优良的家系;不同地点生长量表现为:共和>石湾>凤安;3.5a时性状综合分析和评定表明:28,27,17号家系适应性广,具速生丰产性,可推广利用,13,8,6号是离子注入适应性广、丰产性强的家系,而2,18,30号家系丰产性和稳定性差,缺少利用价值;以3.5a单株材积为选择指标,3个地点突变株入选27株,突变率达到0.75%。

关键词: 尾叶桉家系, 离子注入, 生长分析, 突变株选择

Abstract: 3 plantations including 30 hybrid families of Eucalyptus spp. was built at Shiwan of Guangxi,Gonghe and Zijin of Guangdong in Southern China. Height,DBH and Single Volume had been investigated in 1. 5,2. 5,3. 5 years old,respectively. The results of variance and adaptability analysis indicated that: There were remarkable differences in height,DBH and Single Volume among families,sites and family site; Level of growth was Gonghe > Shiwan > Fengan; Synthesis analysis of families indicated that No. 28,27,17 of no-implanted and 13,8,6 of beam-implanted-families grew fast and steady in different sites,but No. 2,18 and 30 should be eliminated because of slow growth and bad adaptability; there were 27 mutation elite trees to be selected in 3 sites and mutation rate was 0. 75% by single volume.

Key words: Eucalyptus urophylla family, N + -beam implant, Growth analysis, Mutation elite tree selection

中图分类号: 

• S792.39