影响南方红豆杉种子萌发因素的研究

Study on Factors Affecting the Germination of Taxus mairei Seeds

研究了南方红豆杉种胚的发育状况、外种皮的结构以及种子各部分抑制物质相对活性．结果表明种子形态成熟时，种胚基本成熟，离体培养可以生长成苗；外种皮的不透气性和胚乳中的某些抑制物质可能是抑制南方红豆杉种子萌发的因素，但ＡＢＡ不是萌发的抑制因素．

Developmental state of seed embryo, structure of outer seed coat and relative activity of inhibitory substances of different parts of Taxus mairei seeds were studied The results showed that when seeds matured morphologically, their embryos matured too, for embryos cultured in vitro could germinate and develop into shoots The results also showed that the impermeability of oxygen through the seed coat and some inhibitory substances (but not ABA) in seed coat and endosperm might be the factors that affect the germination of Taxus mairei seeds