Franco consists of three layers: the epidermis, the middle layer and the tapetum.

Franco]小孢子囊壁包括3层细胞: 表皮 、 中层和绒毡层.

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The anther is tetrasporangiate and glandular tapetum.

雄蕊花药四室,腺质绒毡层.

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The middle layer and the tapetum cells are totally absorbed as nutrient at last.

中层和绒毡层细胞最终作为营养被全部吸收利用.

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The development of anther wall belongs to the monocotyledonous type, and the tapetum is glander tapetum.

花药壁发育为单子叶型, 绒毡层为腺质型.

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Male - sterility mainly results from the abnormality of mesospore, tapetum tissue and vascular bundle.

中层组织 、 绒毡层组织及药隔维管束异常均是雄性败育的因素.

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The tapetum begins to vary at the stage of tetrad with the cytoplasm anther cell.

小孢子孢原为多细胞,小孢子母细胞减数分裂产生四面体型的小孢子四分体.

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