尾叶桉×细叶桉杂种生长与耐寒性的联合选择  

Selection of Eucalyptus urophylla×E.tereticornis hybrids in growth and cold hardiness

作　　者：何旭东[1,2] 李发根[2] 翁启杰[2] 李梅[2] 施季森[1] 甘四明[2] 

机构地区：[1]南京林业大学林木遗传与生物技术省部共建教育部重点实验室,江苏南京210037 [2]中国林业科学研究院热带林业研究所,广东广州510520

出　　处：《中南林业科技大学学报》2010年第8期68-71,共4页Journal of Central South University of Forestry & Technology

基　　金：国家自然科学基金(30671703);国家高技术研究发展计划(863计划)(2006AA100109);中央级公益性科研院所基本科研业务费专项(RITF2008-4)

摘　　要：桉树速生、耐寒性的育种对冷凉地区的桉树人工林发展意义重大。通过对57个尾叶桉×细叶桉种间杂种的生长和耐寒性的联合选择研究表明:对4年生树高、胸径和材积,母本和父本间的差异达0.01或0.05显著水平,而母本×父本互作不显著;对2.5年生耐寒性,母本、父本和母本×父本互作均差异显著;结合生长和耐寒性表现,评选出11个优良杂种和12株优良杂种单株。Fast-growing and cold-hardy eucalypts are highly valuable for plantation establishment in cool regions.57 Eucalyptus urophylla×E.tereticornis hybrids were employed for selection in both growth and cold hardiness traits.The results indicate that for four-year-old growth traits,including height（H4）,diameter at breast height（D4） and volume（V4）,maternal and paternal effects were significant at 0.01 or 0.05 level,while female×male interaction was non-significant.However,female,male and their interaction effects were all significant in 2.5-year-old cold hardiness.A total of 11 superior hybrids and 12 individual trees were selected out as their combined performance in growth and cold hardiness were concerned.

关 键 词：尾叶桉×细叶桉杂种 生长 耐寒性 选择 

分 类 号：S722.33[农业科学—林木遗传育种] S722.34[农业科学—林学]