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大孢子囊
释义
大孢子囊
Encyclopedia
理学
〔植物形态与结构〕
释
megasporangium
大孢子囊
孢子体进行无性生殖的结构。存在于部分石松类植物(Lycophytes)即水韭科(Isoetaceae)、卷柏科(Selageinellaceae),水生蕨类植物(Ferns)即蘋科(Marsileaceae)、槐叶蘋科(Salviniaceae),以及所有种子植物(spermatophytes)的成熟孢子体上。
Biology
macrosporangium
大孢子囊
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weak periodic potential
weak phase object approximation
weak pinning
weak potential kernel
weak P-point
weak price of agricultural products
weak product
weak projectivity condition
weak property
weak pullback
weak pulse
weak pushout
weak relation
weak relative minimum
weak retract
weak retraction
weak rigidity theorem
weak rock
weak sector condition
weak separability
weak sequence
weak signal detection
weak singular integral
weak singularity
weak solution
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