엘더베리의 雄性配偶體形成에 關한 硏究 = Studies on the formation of male gametophyte of elderberry (Sambucus canadensis)

국문 초록 (Abstract)

엘더베리(Sambucus canadensis)의 雄性配偶體 形成에 關하여 調査하였던 바 다음과 같은 結果를 얻었다.
1. 內被組織에서는 垂側分裂만을 하는 것이 通例인데 本 植物에서는 一回의 竝側分裂을 하여 二層으로 된 內被層을 볼 수 있다.
2. 葯壁組織의 形成過程은 雙子葉型에 屬한다.
3. 初生胞子形成細胞는 數次의 有絲分裂로 胞子形成組織을 이룬다.
4. 同一 葯囊의 各 葯室에 따라서는 小胞子四分子와 二核細胞를 特異하게 볼 수 있다.
5. 開葯時의 成熟花粉은 營養核과 2개의 雄核을 갖는다.
6. 開葯直前에도 隣接되어 있는 小胞子囊 사이의 隔壁은 그대로 남아 있게 된다.

다국어 초록 (Multilingual Abstract)

The present investigation was carried out to elucidate the formation of microgametophyte of elderberry (Sambucus canadensis). The results obtained are summarized as follows :
1. In general, the cell division of endothecial tissue has known to be forming one layered tissue, however, the periclinal division was exceptionally observed in the present work.
2. The parietal tissue was formed as a dicotyledonous type.
3. Sporogenous tissue was formed through several mitosis.
4. Microspore tetrad and binucleate cells were observed in different locule of an anther.
5. A vegetative nucleus and two sperms were observed in a matured pollen grain.
6. The two microsporangia of each side in anther are not confluent because of no breaking down of the partition between them.