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本文在国内首次观察描述了冈村枝管藻生活史中由多室孢子囊释放出的中性游孢子的发育变化和各时期的形态特征。成熟的冈村枝管藻孢子体上存在多室孢子囊,由多室孢子囊释放出的中性游孢子附着后直接萌发为盘状体,1周左右盘状体的周边长出许多同化丝和无色毛丝体,在同化丝逐渐成熟的过程中伴随着毛丝体的脱落或萎缩死亡,盘状体即发育成孢子体。通过人为控制条件,在室内对多室孢子囊枝进行连续数月的培养和观察,发现由中性游孢子发育而来的孢子体长到1~2mm即成熟,在同化丝顶部形成多室孢子囊进入下一轮循环。由多室孢子囊释放出的中性游孢子是人工育苗生产过程中苗种的主要来源。
In this paper, we first observed and described the developmental changes and the morphological characteristics of the neutenticidal spores released by the multi-compartment sporangia in the life history of the pipe-branch of Okamura. Mucus mucilaginosus spores of mature Okamura multicellular sporangia, released by the multi-compartment sporangia neutron spores attached directly after the deposition of disk-shaped body, about 1 week around the disc-like body to grow many of the assimilation And colorless hairline body, in the process of gradual maturation of the attendant filaments shedding or atrophy accompanied by death, disciform body that is sporophyte. By artificially controlled conditions, the multi-chamber sporangia branches were cultured and observed continuously for several months indoors and found that the sporophytes developed from the neutenticidal spores grew to 1 to 2 mm in length, that is, the mature spores formed on the top of the isospore Pouch into the next round of circulation. Neutrophil spores released from the polycystic sporocysts are the major source of seed in the artificial seedling production process.