摘要
干燥方法、种子含水量、贮藏温度和贮藏时间均对辽宁杨和I-72杨种子的发芽率、成苗率、苗高、胚根长度等活力指标有极显著影响。对于杨树种子的贮藏,室内阴干等缓慢脱水的干燥方法较硅胶干燥等快速脱水的方法好,尤以室内阴干1 d为最好。低温条件可提高种子的耐贮性,辽宁杨种子温度越低贮藏效果越好,其中以-70℃最好;I-72杨种子以4℃的低温贮藏效果最好。在各种贮藏温度条件下,随着贮藏时间的延长,种子的各项活力指标均明显降低。对于杨树种子贮藏而言,贮藏温度比干燥方法和种子含水量更重要。
To analyse the influence of storage temperature, water content and dry means on resistance to storage properties of poplar seeds we carried this study. The result showed that drying method, moisture content, storage temperature and time all significantly affected on germination rate and seedling rate of Liaoning poplar and Ⅰ-72 poplar seeds, as well as their seedling height and radicle length. In terms of storage, poplar seeds were suitable to be slowly dehydrated indoor naturally, but not be rapidly dehydrated by silica dehydration, and the optimum duration was one day. The Sect. Aigeiros poplar seeds storage tolerance could be enhanced in low temperature. Seeds of Liaoning poplar preferred cryopereservation below 0 ℃ and - 70 ℃ was the best. However, 1-72 poplar seed could get better effect if it was stored at 4 ℃. With storage time prolonging, all items related to seeds vigor were declined significantly. For storage of poplar seed, storage temperature is more important than drying method and moisture content of seed.
出处
《种子》
CSCD
北大核心
2009年第4期1-7,共7页
Seed
基金
国家"十五"科技攻关项目(2001BA508B15)
武汉市科技攻关项目(2002200513207)
关键词
杨树种子
耐贮性
干燥方法
含水量
贮藏温度
poplar seeds
storage capacity
drying method
moisture content
storage temperature
