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首页> 外文期刊>American Fern Journal >The Gametophyte of Lycopodium deuterodensum - Type Ⅱ or Ⅰ
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The Gametophyte of Lycopodium deuterodensum - Type Ⅱ or Ⅰ

机译：Ⅱ或Ⅰ型氘核麦草的配子体

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摘要

The spores of Lycopodium deuterodensum germinate after 3 weeks in the dark on a nutrient medium containing inorganic nutrients and glucose. The dark grown prothalli have the characteristics associated with Type Ⅰ and Ⅱ gametophytes — a ring meristem, radial symmetry, and lack paraphyses and photosynthetic lobes. The younger gametophytes have the carrot shape of a Type Ⅱ gametophyte with a tapering base, a constricted neck, and a gametangial cap with antheridia. With additional growth, the gametophytes become as wide as long and finally wider than long. The wider than long gametophytes are the first to have both antheridia and archegonia on their gametangial caps. The largest gametophytes grown in culture are Type Ⅰ with irregular disk shapes. The antheridia on all gametophytes are sunken and, for the Lycopodiaceae, the archegonia have medium sized necks with only 3-4 neck canal cells. Although the specific type of gametophyte has not been determined for this species, those grown in culture have the characteristics recognized for subterranean, nonphotosynthetic, mycorrhizal gametophytes of the Lycopodiaceae.
机译：在黑暗中，在含有无机营养素和葡萄糖的营养素培养基上放置3周后，氘核麦草的孢子萌发。深色生长的前原生物具有与Ⅰ型和Ⅱ型配子体有关的特征-环分生组织，径向对称，并且缺乏副植物和光合裂片。较年轻的配子体的胡萝卜形状为Ⅱ型配子体，基部逐渐变细，颈部狭窄，配子酱的顶盖带有花药。随着额外的增长，配子体变长，最终变宽。配子体比长于配子体长，是第一个在其猎物盖上同时具有花药和古细菌的植物。在文化中生长的最大配子体是具有不规则圆盘形状的Ⅰ型。所有配子体上的花药都沉没了，对于番茄科来说，古生菌的脖子中等大小，只有3-4个颈管细胞。尽管尚未确定该物种的配子体的具体类型，但在文化中生长的配子体具有公认的狼毒科地下，非光合，菌根配子体的特征。

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