摘要
[目的]研究经超干处理后金钱松种子的发芽率、活力指数以及电导率的变化。[方法]采用室温硅胶干燥法,测定种子的脱水速率,研究超干处理对种子发芽率和活力指数、电导率的影响。[结果]将金钱松种子含水量由16.0%降至3.3%大约需要60 d。人工老化过程中,含水量4.2%～6.4%的金钱松种子耐藏性最好,而且随着贮藏温度的降低,最佳含水量有升高的趋势。含水量4.2%～6.4%的金钱松种子在25℃恒温保存3个月后的发芽率仍然低于60%。含水量3.3%的种子已经过度干燥。[结论]金钱松种子的在室温条件下的超干贮藏并不能取得较好的贮藏效果。
[ Objective ] The research aimed to study the changes of germination rate, vigor index and electrical conductivity of the seeds of P. kaempferi after the ultra-dry treatment. [ Method] Using silicone drying method at room temperature,the dehydration rate of the seeds was deter- mined. The effects of uhra-dry treatment on the germination rate,vigor index and electrical conductivity of the seeds were studied. [ Result ] The decrease of moisture content i~ the seeds of P. kaempferi took 60 days from 16.0% to 3.3%. During the process of artificial aging,the seeds of P. kaempferi with the moisture content of 4.2% - 6.4% showed the best storability. With the decreasing of the storage temperature, the optimum moisture content showed an increasing trend. The germination rate of the seeds of P. kaempferi with the moisture content of 4.2% -6.4% was still lower than 60% after they were stored three months at constant temperature （25 ℃） . Tile seeds with the moisture content of 3.3% was overdry- ing. [Conclusion] The storage effects of P. kaempferi seeds in the ultra-dry storage at room temperature was not good.
出处
《安徽农业科学》
CAS
北大核心
2011年第18期10877-10879,共3页
Journal of Anhui Agricultural Sciences
基金
委托研究项目"林木种苗繁育技术"(010021191)
关键词
金钱松
超干贮藏技术
种子活力
Pseudolarix kaempferi
Ultra-dry storage technology
Seed vitality
