木麻黄等种子超干贮藏生理生化特性的研究  

Studies on Ultradry Treatment and Storage of Casuarina equisetifolia, Pinus thunbergii and Acacia confusa Seeds

作　　者：郑郁善[1] 王舒凤[1] 陈礼光 

机构地区：[1]福建林学院资源与环境系,福建南平353001

出　　处：《江西农业大学学报》2000年第4期554-558,共5页Acta Agriculturae Universitatis Jiangxiensis

基　　金：福建省自然科学基金项目资助 !(C95 0 2 8)

摘　　要：试验采用热空气恒温 (5 0℃ )干燥法对木麻黄、黑松、相思树种子进行超干处理和贮藏 ,以研究对种子活力及生理特性的影响。结果表明 ,木麻黄、黑松、相思树种子耐脱水性较强 ,脱水至 4% ,未发现种子活力下降 ,细胞膜能保持较好完整性 ,α -淀粉酶和脱氢酶活性最高。在常温下贮存 1年后 ,木麻黄、相思树和黑松种子活力下降程度随种子含水率变化而有所差异 ,当种子含水率为 5 %～ 9%时随含水率下降其各发芽能力指标下降率较大 ,当种子含水率为 4%以下时 ,各发芽能力指标下降率较小 ,而且较为稳定 ,当种子含水率为 4%时下降率最小。可见这三个树种种子超干保存最适含水率为 4%。A study on ultradry treatment and storage of Casuarina equisetifolia, Pinus thunbergii and Acacia confusa seeds were conducted. Three kinds of seeds were desiccated by hot air desiccator. The results showed that Casuarina equisetifolia, Pinus thunbergii and Acacia confusa seeds had higher desiccation endurance. When seeds were desiccated to 4% MC, its higher viability and vigor could be retained, its cell membrane integrity remained well and the activity of Dehydrogenase, α-Amylase and respiration intensity were the highest. After one-year-storage in ambient temperature, the viability and vigor of Casuarina equisetifolia seeds decreased little whereas those of Pinus thunbergii and Acacia confusa seeds decreased much more than those of the former. But the decrease date of ultra-low MC was lower than those of low moisture content seeds. So ultradry treatment could improve the storablity of Casuarina equisetifolia, Pinus thunbergii and Acacia confusa seeds.

关 键 词：种子 生理特性 木麻黄 超干贮藏 生化特性 

分 类 号：S792.930.1[农业科学—林木遗传育种]