油松种子超干贮藏生理生化特征的研究  

Effects of Ultra-dry Treatment on Vigor and Physiological Characteristics of Pinus tabulaeformis Seeds

作　　者：李庆梅[1] 侯龙鱼[2] 段新芳[3] 刘广全[4] 马风云[2] 

机构地区：[1]中国林业科学研究院林业研究所,国家林业局林木培育重点实验室,北京100091 [2]山东农业大学林学院,山东泰安271018 [3]中国林业科学研究院新技术研究所,北京100091 [4]西北农林科技大学,陕西杨陵712100

出　　处：《林业科学研究》2009年第1期124-128,共5页Forest Research

基　　金：国家林业科技支撑计划课题"困难立地工程造林关键技术研究"(2006BAD03A03);专题"西北农牧交错带严重侵蚀区植被恢复与造林技术研究"(2006BAD03A0308);国家林业局948项目"林木种子质量快速测定技术引进"(2003-4-03)

摘　　要：The seeds of Pinus tabulaeformis Carr.were dried from 64 g·kg-1 to 53 g·kg-1,41 g·kg-1,32 g·kg-1 and 25 g·kg-1 moisture content in a desiccator with silica gel.The seed vigor and physiological characteristics after accelerated aging were measured.The results showed that the seed germination energy,germination percentage,germination index and vigor index separately decreased 6.8%,14.5%,1.39 and 4.18;The germination percentage and vigor of ultra-dried seeds were higher than those of seeds with 64 g·kg-1 moisture content;The activities of dehydrogenase and α-amylase of ultra-dried seeds were higher than those of seeds with 64 g·kg-1 moisture content after aging,while the relative conductivity was lower than that of the latter.It is feasible that Pinus tabulaeformis Carr.seeds to be stored with 32 g·kg-1 moisture content.The seeds of Pinus tabulaeformis Carr. were dried from 64 g · kg^-1 to 53 g · kg^-1 , 41 g · kg^-1 , 32 g · kg^-1 and 25 g · kg^-1 moisture content in a desiccator with silica gel. The seed vigor and physiological characteristics after accelerated aging were measured. The results showed that the seed germination energy, germination percentage, germination index and vigor index separately decreased 6.8%, 14.5%, 1.39 and 4. 18 ; The germination percentage and vigor of ultra-dried seeds were higher than those of seeds with 64 g · kg^-1 moisture content; The activities of dehydrogenase and a-amylase of ultra-dried seeds were higher than those of seeds with 64 g · kg^-1 moisture content after aging, while the relative conductivity was lower than that of the latter. It is feasible that Pinus tabulaeformis Carr. seeds to be stored with 32 g · kg^-1 moisture content.

关 键 词：油松种子 超干保存 相对电导率 脱氢酶活性 Α-淀粉酶活性 

分 类 号：S791.254[农业科学—林木遗传育种]