Carpogonium

Japanese: carpogonium
Carpogonium

…In red algae, the spores formed through sexual reproduction are called carpospores, and are distinguished from asexually produced spores (tetraspores, monospores, etc.). The zygote produced when an egg cell (the egg cell of red algae is specifically called the carpogonium) combines with a sperm develops within the gametophyte to become a carposporophyte. This carposporophyte eventually produces a carpospore, but the process from fertilization to carpospore formation can be of various types, which is an important characteristic when classifying red algae. …

*Some of the terminology that mentions "carpogonium" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…紅藻植物において,有性生殖を経て形成される胞子を果胞子と呼び,無性的に生じる胞子(四分胞子,単胞子など)と区別する。卵細胞(紅藻植物の卵細胞を特に造果器carpogoniumという)が精子と合体して生じた接合子は配偶体内で発達して果胞子体carposporophyteとなる。この果胞子体が最終的に果胞子を生じるが,受精から果胞子形成までの過程はさまざまな型があり,紅藻植物を分類する場合の重要な特徴となる。…

※「carpogonium」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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