北京林业大学学报2011，Vol.33Issue(2)：25-30,6.
华北落叶松和日本落叶松种子超干保存活力和生理特性研究
Vigor and physiological properties of ultra-drying seeds of Larix principis-rupprechtii Mayr. and L. kaempferi (Lamb.) Carr.
摘要
Abstract
Using ultra-drying over silica gel ( at room temperature) and accelerated aging ( 50 ℃ , 30 d) methods, we studied the storage behavior of Larix principis-rupprechtii Mayr. and L. kaempferi( Lamb. ) Carr. seeds. Seed germination percentage (GP) , germination energy (GE) , germination index (GI) , vigor index(VI), relative conductivity(RC), dehydrogenase activity (DA) and isocitrate lyase activity (ICL) after ultra-drying(pre-aging) and accelerated aging were investigated. The results showed that higher GE, GP, GI, VI, DA and ICL were found in the seeds with moisture content(MC) of 50 - 28 g/kg for L. principis-rupprechtii and 48 - 28 g/kg for L. kaempferi before and after aging, indicating the feasibility of ultra-drying storage for seeds of these two species. Furthermore, all indices of seeds with MC of 28 g/kg were best for both species, indicating their better anti-aging ability than seeds with other MCs. The results indicate that 28 g/kg of MC was optimum for the ultra-dying storage of L. principis-rupprechtii and L. kaempfer seeds.关键词
华北落叶松/日本落叶松/种子/超干处理/种子活力Key words
Larix principis-rupprechtii/ Larix kaempferi/ seed/ ultra-drying/ seed vigor分类
农业科技引用本文复制引用
李庆梅,刘艳,陈怀梁,马风云,侯龙鱼..华北落叶松和日本落叶松种子超干保存活力和生理特性研究[J].北京林业大学学报,2011,33(2):25-30,6.基金项目
"973"国家重点基础研究发展计划项目(2010CB951301-6)、中国林业科学研究院林业研究所重点项目"几种主要造林树种种子新技术保存研究". （2010CB951301-6）
