prothallus

基本解釋

Archegonial neck usually inclines or curves towards the base of the prothallus at maturity.
頸卵器成熟后，頸部常向原葉體基部?jī)A斜或彎曲。
In homosporous plants, there is only one type of prothallus with both male and female sex organs.
在具同形孢子的植物中，只有一種雌雄性器官兼?zhèn)涞脑~體類(lèi)型。
In vascular plants the diploid sporophyte is the dominant phase and in the ferns, for example, the gametophyte is a small prothallus.
在維管植物（蕨類(lèi)）中二倍體的孢子體占生活史的主要部分，配子體僅為原葉體。
They indicated that adult prothallus with hairs, bifurcate rhizina and curve archegonium are some the evolution characteristic.The paper preliminary discusses its taxonomic significance.
研究表明龍頭節(jié)肢蕨的配子體發(fā)育過(guò)程中出現(xiàn)毛狀體，假根分叉，頸卵器彎曲等進(jìn)化特征，并對(duì)其分類(lèi)學(xué)意義初步討論。
Prothallus (pl. prothalli) A flattened disk of cells that forms the free-living haploid gametophyte generation of certain ferns, e.g.Dryopteris.
原葉體：一種扁平的葉狀體，它是某些蕨類(lèi)植物的能獨(dú)立生活的單倍性配子體，如鱗毛蕨屬。