摘要
采用14个产地种子所育的1a生香椿播种苗为测定材料，研究了各种源苗期生长差异，发现各种源香椿苗的苗高、地径与生物量等生长性状均存在显著差异，同一种源内不同单株之间也存在较大差异。7～9月是香椿苗高生长的主要时期。香椿种源的地理变异规律主要表现为南一北变异趋势。综合其生长表现，初步选出江苏南京和湖南洞口2个种源为苗期优良种源。
One-year-old seedlings of Toona sinensis from 14 provenances were used to explore the variations among provenances of growth traits. The results showed that remarkable variations were found among provenances for those growth traits investigated as height, diameter and biomass. And also, great variations were found among individuals within provenance for growth traits. July to September was the main period for height growth of Toona sinensis. A south to north cline was found for growth of Toona sinensis. Finally, two superior provenances of Nanjing in Jiangsu and Dongkou in Hunan were selected upon general assessment.
出处
《林业科技开发》
2007年第2期38-41,共4页
China Forestry Science and Technology
基金
江苏省农业三项工程项目(SX(2004)083)
江苏省农业科技攻关项目(BE2005368)
关键词
香椿
种源
单株
生长特性
Toona sinensis
Provenance
Individual
Growth trait
