Collection and storage of weed seeds

采集了2316份日本杂草种子样品，并将其保存在零下20摄氏度的冷藏室中。隶属于科845种。样本包括日本的大部分杂草。风力操作的机器来挑选成熟的种子是非常有用的。用干燥器对种子进行除湿处理后，将种子置于零下20摄氏度的冷藏室中贮藏。大多数树种的种子都可以通过这种方法安全地储存。一些水生植物种子在干燥后死亡。这种种子储存在水中，保存在4摄氏度的冰箱中，所有测量到的种子数据都以数据库的形式存储在个人计算机中。

2316 samples of weed seeds of Japan were collected and stored in a refrigerator room of -20 degrees of Celsius. They belong to 845 species of 89 families. The samples include most of the weed species of Japan.A wind-operated machine to select ripe seeds is very useful. Number of seeds in a fruit was counted and weight of seeds were measured.After dehumidifying seeds with desiccator, seeds were stored in a refrigerated room of minus twenty degrees of Celsius. Seeds of the most of the species are safely stored by this method. Some seeds of aquatic plant died after drying them. Such a kind of seeds are stored in the water and kept in a refrigerator of four degrees of Celsius.All data measured about seeds are stored as a database in a personal computer.