某些藻类（特别是甲藻），在不适宜生长的恶劣环境条件下能形成休眠孢囊。
Many dinoflagellate species can form resting cysts in impoverished environment conditions.
研究了在不同土壤类型条件下连种抗病品种和感病品种后，大豆孢囊线虫数量变化。
Resistant and susceptible varieties of soybean were planted continuously in different types of soil and the number of cyst nematode in the root system was counted.
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