n.孢子中壁...

mesospore的音标：mesospore的英式发音音标为：['mesəʊ'spɔ:]mesospore的美式发音音标为：['mesoʊ'spɔ]...

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....