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球莖Corm)是某些植物品種的短、直地下末端肥大變成圓球型或橢圓形的部分,與塊莖鱗莖相對[1]。球莖屬於一種變態莖,為了適應儲藏養料準備越冬或夏曬。一般球莖植物的芽都是集生在球莖頂端,節與節之間比較明顯,節上生有膜質的鱗,以及少數腋芽。球莖可供繁殖之用。

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留尼汪市場販賣的芋頭球莖

球莖植物

以下農作物會形成球莖:

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