几种外源激素对杉木种子萌发的影响

THE EFFECTS OF SEVERAL EXOGENOUS HORMONES ON GERMINATION OF CHINESE FIR SEED

摘要:

应用ＧＡ、６－ＢＡ和ＡＢＡ等三种外源激素对杉木种于萌发的影响进行了研究．结果表明，ＧＡ较明显促进杉木种子的萌发，而６－ＢＡ和ＡＢＡ则显著地抑制了杉木种子的萌发．当三种激素共同存在时，它们在杉木种子萌发中的相互作用表现为：ＧＡ起促进作用（最适浓度为５０－１００ｐｐｍ）．ＡＢＡ起抑制作用，６－ＢＡ（浓度不超过５０ｐｐｍ）则有解除ＡＢＡ的抑制作用．

Abstract:

The effects of three exogenous hormones on germination of the seed of Chinese fir (Cunninghamia lanceolata) were studied. The results showed that the seed germination was actively stimulated by Gibberellin (GA), and significantly inhibited by 6-benzylaminopurine (6-BA) and Abscisic acid (ABA). When the three exogenous hormones were used together, it was shown that GA at 50-100 ppm had an active role in promoting seed germination, while 6-BA at concentration not exceed 50 ppm exhibited disinhibition effect. The inhibition effect of ABA could be antagonized by 6-BA and GA.