破除南方红豆杉种子休眠方法的研究

Study on Dormancy of Taxus Mairei(Lemee et Levl.) S. Y. Hu ex Liu Seeds

[目的]研究南方红豆杉种子休眠机理,探究其最佳破除休眠方法。[方法]采用流水法、激素法、变温层积法、激素加变温层积法等对南方红豆杉种子进行破除休眠,通过比较处理后种子水提液对油菜种子发芽率抑制情况,来确定最佳破除休眠方法。[结果]通过四种方法处理过的南方红豆杉种子水提液对油菜种子的发芽率抑制情况比较,结果表明激素加变温层积法的抑制程度最低。[结论]最佳破除休眠的方法为以0.05%赤霉素处理辅以低(4℃)-暖(23℃)-低(4℃)变温层积法处理120天。

[Objective] To determine dormancy mechanism of Taxus mairei（Lemee et Levl.） S.Y.Hu ex Liu Seeds,the best method of dormancy breaking.[Method]The seeds were handled by lotic water or excitatory autacoid or cold-warm-cold stratification treatment or cold-warm-cold stratification treatment with excitatory autacoid,then compare withgermination inhibition of Brassica campestris seeds handling with water solution from the seeds after four dormancy breaking methods,to dertemine the best dormancy breaking method.[Conclusion] The best damancy breaking method was cold（4℃）—warm（23℃）—cold（4℃） stratification treatment with 0.05% gibberellic acid for 120 days.