不同预处理对3种野生白蜡属植物种子萌发的影响  

Effects of Different Pretreatment on Seed Germination of Three Wild Species of Faxinus

作　　者：吴超然 王熙 权键 魏钰 WU Chao-ran;WANG Xi;QUAN Jian(China National Botanical Garden(North Garden)/Beijing Floriculture Engineering Technology Research Center/Beijing Laboratory of Urban and Rural Ecological Environment,Beijing 100093)

机构地区：[1]国家植物园(北园)/北京市花卉园艺工程技术研究中心/城乡生态环境北京实验室,北京100093

出　　处：《安徽农业科学》2023年第9期87-89,140,共4页Journal of Anhui Agricultural Sciences

基　　金：国家植物园(北园)园管课题“植物园露地濒危木本植物现状分析研究”(BZ202102)。

摘　　要：[目的]探索3种白蜡种子最佳处理方法。[方法]采用标准发芽法及发芽率测定等方法,研究层积处理、赤霉素处理、赤霉素+层积处理对3种白蜡属种子萌发的影响。[结果]苦枥木、秦岭白蜡树、披针叶白蜡树经赤霉素处理后,种子几乎不萌发。层积处理90 d,苦枥木、秦岭白蜡树、披针叶白蜡树种子的发芽率分别为19%、25%、48%。赤霉素+层积处理90 d后,种子发芽率较层积处理有很大提高。赤霉素浓度在0~300 mg/L,种子发芽率随浓度升高而增大,当赤霉素浓度为400 mg/L以上,种子发芽率反而降低。[结论]层积处理90 d结合赤霉素300 mg/L处理是3种白蜡属植物种子的最优预处理方式。[Objective]To explore the best treatment methods for three kinds of Faxinus seeds.[Method]The effects of stratification,gibberellin treatment,and stratification+gibberellin treatment on seed germination of the 3 species Faxinus were studied using standard germination and germination rate measurement method.[Result]The results showed that the 3 species seeds hardly germinated when treated with a single gibberellin.After 90 days of stratification,the germination rates of the seeds of Faxinus insularis,Faxinus paxiana,Faxinus baroniana were 19%,25%,48%respectively.After 90 days of gibberellin treatment combined with stratification,the germination rates were improved greatly compared with the single stratified treatment.When the concentration of gibberellin was between 0 and 300 mg/L,the germination rate of seeds increased with the increase of the concentration,but decreased above 400 mg/L.[Conclusion]Comprehensive analysis showed that 90 days of stratification combined with 300 mg/L of gibberellin was the optimal treatment method for the seeds of the three species of Faxinus.

关 键 词：野生白蜡 种子萌发 预处理 萌发特性 

分 类 号：S792.41[农业科学—林木遗传育种]