摘要
对山楂、圆柏、蔷薇属、秤锤树、膀胱果、棱角山矾、大果冬青、大叶冬青、银钟花、青钱柳、长柄双花木10个种并1个属“二年种子”进行研究,对比分析破除“二年种子”的机械休眠和生理休眠的方法,总结生产中酸蚀和裂口处理种壳的操作程序,明确控制层积处理时间和条件的重要性。在上述研究基础上,重点展开对“二年种子”中濒危树种特性的研究。测试结果表明:“二年种子”的萌发性状既是其延续种性的一种遗传表现,也是在现今世界环境条件下,导致植物濒危的重要因素之一。研究结果表明,“二年种子”经酸蚀—裂口处理种壳后,层积时间可以由二冬一夏转为经一冬(4个月左右)层积后在春天正常萌发。
This paper summaries our studies on the ＂two-year seeds＂ of Crataegus pinnatifida, Sabina chinensis, Rosa, Sinojackia xylocarpa, Staphylea holocarpa, Symplocos tetragona, Ilex macrocarpa var. longipedunculata, Ilex latifolia, Halesia macgregorii , Cyclocarya paliurus and Disanthus cercidifolius var. longipes . The methods of breaking the mechanical and physiological dormancy of those ＂two-year seeds＂ are compared and analyzed, with the procedures of use summed up and the important of controlling the duration and conditions of stratification indicated, we emphasized the studies on the characteristics of care and endangered woody plants, which showed that the delayed germination of ＂two-year seeds＂ is a genetically controlled strategy for the species to survive that under the current global environment condition endangerment of the plants. Our researches have shown that the long winter-summer-winter period normally required for ＂two-year seeds＂ to germinate can be shortened to only 4 months with treatments of acid erosion followed by cracking and winter stratification.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2007年第1期55-61,共7页
Scientia Silvae Sinicae
关键词
二年种子
休眠与萌发
硫酸处理
裂口处理
冷层积
two-year seeds
dormancy and germination
sulphuric acid treatment
cracking treatment
cold stratification
