森林工程2025，Vol.41Issue(4)：666-675,10.DOI:10.7525/j.issn.1006-8023.2025.04.002
解除休眠水曲柳种子的超干贮藏研究
Ultra-Dry Storage of Dormancy-Released Fraxinus mandshurica Seeds
摘要
Abstract
In order to explore the suitable ultra-dry storage conditions for the dormancy-released seeds of Fraxinus mandshurica,the dormancy-released seeds of Fraxinus mandshurica were dried to different water(4%,3%,2%)con-tent at different drying rates(fast(the mass ratio of silicone to seed was 6∶1),medium(3∶1)and slow(1∶1),respec-tively),and stored at room temperature for different times(0,30,90,180,270,360 d).The germination performance and physiological changes of Fraxinus mandshurica seeds after ultra-dry storage were studied using seeds stored at 5℃with 7%water content as a control.The results showed that the seed germination rate of all ultra-dry storage treatments could reach more than 50%within 180 days.After ultra-dry storage for 180 days,the germination ability of the fast dry-ing seeds was strong,and the germination rate of the seeds with high water content(4%)was the highest(72%);the germination ability of slow drying seeds was low,and the germination rate of seeds with low water content(2%)was the lowest(50%).After 270 days of ultra-dry storage,the seed germination rate decreased significantly,and the seed germi-nation rate of each ultra-dry storage treatment was significantly lower than that of the control.The relative conductivity of seeds was significantly lower than that of 0 d after ultra-dry storage for 30 d and 90 d,and higher than that of 0 d after ultra-dry storage for 360 d.The MDA content of seeds with 3%and 4%water content after fast drying was lower than that of the control at 0,90 and 270 days of storage.The ultra-dry storage of dormancy-released Fraxinus mandshurica seeds is feasible,and the treatment effect of fast drying to higher water content(4%)is better,but the ultra-dry storage time is appropriate within 180 days.After storage time of more than 270 days,the seed conductivity increases significantly,and the seed germination ability decreases significantly.Therefore,if Fraxinus mandshurica seeds are sown and used in a short term(half a year)after dormancy is released,ultra-dry storage can be used.If it is planned to be sown and used in a long term(more than one year),it is better to store the seeds at 5℃with 7%water content.关键词
水曲柳/种子/超干贮藏/种子含水量/贮藏时间/生理变化Key words
Fraxinus mandshurica/seeds/ultra-dry storage/seed water content/storage time/physiological changes分类
农业科技引用本文复制引用
程立,辛昊,朱美如,李明月,张鹏..解除休眠水曲柳种子的超干贮藏研究[J].森林工程,2025,41(4):666-675,10.基金项目
国家自然科学基金项目(31870615). （31870615）
