Protonema (pl. protonemata) The young bryophyte gametophyte that develops following spore germination.
苔藓植物中直由孢子萌发形成的构称为原丝体。
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They raised 80 bean plants, infested 40 of them with aphids two weeks after germination, and then, three days later, tested samples of the hydroponic solution of each using a process called bioassay-guided fractionation.
他们培育了 80 株豆类植, 在发芽两周后用蚜虫感染了其 40 株,然后在三天后, 使用称为生测定引导分馏过程测试了每株植水培溶液样本。