袁畅 张志朦 黄潜 谢忠涛 张阳芷 杨贤均

摘要 采用3种浓度激素分别处理层积与未层积的马甲子种子，对发芽后的马甲子种子在子叶展平时的根、茎进行测量，以探究不同浓度激素对马甲子幼苗的影响。试验结果表明，在25 ℃的条件下，使用0.050 00 mol/L的生长素处理层积过的马甲子种子后，幼苗长势最好，其根、茎长度分别为48、58.73 mm，综合整体来看，生长素对层积与未层积过的种子发芽后的幼苗都能起到促进作用。0.050 00 mol/L浓度赤霉素处理层积过的马甲子种子，对种子发芽后幼苗根、茎生长有促进作用。任意浓度萘乙酸处理层积与未层积过的马甲子种子，都不能对马甲子幼苗根、茎生长同时产生促进作用，其中0.000 10 mol/L的萘乙酸对层积与未层积马甲子幼苗的茎生长起到促进作用。

关键词 马甲子;种子发芽;幼苗生长;激素

中图分类号 S723  文献标识码 A

文章编号 0517-6611（2021）04-0107-03

doi：10.3969/j.issn.0517-6611.2021.04.029

Effects of Different Concentrations of Hormones on the Seedlings of Paliurus ramosissimus

YUAN Chang，ZHANG Zhi-meng，HUANG Qian et al （College of Urban and Rural Construction，Shaoyang University，Shaoyang，Hunan 422004）

Abstract In this experiment，layered and unlayered seeds were treated with three kinds of hormones at different concentrations，and the roots and stems of the germinated seeds in cotyledon were measured，so as to explore the influence of hormones at different concentrations on the seedlings.The experimental results showed that under the condition of 25 ℃ and treated with 0.050 00 mol/L auxin，the seedling growth was the best，the root and stem length were 48，58.73 mm，respectively.On the whole，auxin could promote the germination of both layered and unlayered seeds.The effect of gibberellin on root and stem growth of seedling after seed germination was improved only when stratified seed was treated with 0.050 00 mol/L.The root and stem growth of the P.ramosissimus seedling could not be promoted by the treatment of the stratified and unstratified seeds with any concentration of naphthoacetic acid，among which 0.000 10 mol/L naphthoacetic acid promoted the growth of the stems of the stratified and unstratified P.ramosissimus seedling.

Key words Paliurus ramosissimus;Seed germination;Seedling growth;Hormone

基金項目 国家级大学生创新创业训练项目“植物生长素对马甲子种子的萌发特性研究”（201910547040）;湖南天华园林绿化有限公司横向项目“基于公园城市背景下园林工程项目施工与管理实务研究”（2019hx89）;湖南省教育厅新农科项目：地方性本科院校园林专业创新创业教育与实践（湘教通〔2020〕94 号）;湖南省质量工程项目：林学类大学生创新创业教育中心（湘教通〔2018〕380号）。

作者简介 袁畅（1999—），女，湖南株洲人，从事园林植物应用研究。通信作者，教授，硕士，从事生态景观规划与生态修复研究。

收稿日期 2020-07-12

马甲子[Paliurus ramosissimus （Lour.） Poir.]属鼠李科马甲子属，落叶灌木。生于海拔2 000 m以下的山地和平原，小枝褐色或深褐色，被短柔毛，稀近无毛。……