1.ノビルタイプのデンドロビウム品種に.新しい遺伝子を導入する可能性を調べるため, Eugenanthe節内の22種と、D. moniliforme(セッコク), D. nobileとの交配を行なった.2.交配稔性からみて, 本節内にはD. moniliforme, D. nobileとは遠縁と思われる種が含まれていた.3.D. moniliformeは, D. nobileに比べ, 多くの種と交雑可能で, 今後の育種のために有用な種と考えられた.In order to check the possibility of introducing new genes into the modern nobile-type cultivars of Dendrobium, D. nobile Lindl. and D. moniliforme (L.) Swarz. were crossed with selected species of section Eugenanthe Schlechter. D. moniliforme showed a wider range of crossability with Eugenanthe species compared to D. nobile. Eugenanthe species were divided into two groups according to their crossability with D. moniliforme
