摘要
以梧桐(Firmiana simplex(L.)W.F.Wight)种子为试材,研究不同浓度赤霉素、水杨酸、α-萘乙酸以及层积处理对梧桐种子萌发率的影响,并研究不同浓度赤霉素和α-萘乙酸2种激素对梧桐幼苗生长的影响。结果表明:浓度为0.075 g/L的水杨酸处理和层积处理,能够显著提高梧桐种子的萌发率;0.050 g/L、0.075 g/L的α-萘乙酸能够分别显著促进梧桐幼苗主根以及主茎的生长,而赤霉素和α-萘乙酸对梧桐叶片的生长都具有抑制作用,浓度越高,叶片越小。
With Firmiana simplex （L.） W. F. Wight as an experiment material, the effects of different concentrations of GA3 （Gibberellin A3）, SA （Salicylic acid） and NAA （1-Naphthalene acetic acid） and stratification on the germination rate of seeds were studied firstly, and then the effects of GA3 and NAA on seedling growth were analyzed. The results showed that the germination rate could be improved by 0.075 g/L SA and stratification markedly. It was indicated by the experiment that the growth of the main root and main stem could be promoted by 0.050 g/L and 0.077 g/L NAA, respectively. However, the leaf length and leaf width decreased significantly in the GA3 and NAA treatments.
基金
Supported by the Regional Fund of Natural Science Foundation of China(31360065)
Fund for the Construction of Provincial Superiority Characteristic Key Discipline Ecology~~
关键词
梧桐
种子萌发
幼苗生长
层积
激素
Firmiana simplex
, Germination rate
Seedling growth
Stratification
Hormone
