CHEN Lan-lan,GUO Sheng-mao,LAI Xiao-lian,et al.Effects of Drought,Time and Their Interaction on Seed Germination of Platycodon grandiflorum[J].Northern Horticulture,2014,38(15):170-172.
干旱、时间及其互作对桔梗种子萌发的影响
- Title:
- Effects of Drought,Time and Their Interaction on Seed Germination of Platycodon grandiflorum
- 文章编号:
- 1001-0009(2014)15-0170-03
- 分类号:
- Q949.783.2
- 文献标志码:
- A
- 摘要:
- 以桔梗的种子为试材，研究了PEG浓度、浸泡时间及其互作对种子萌发的影响。结果表明：PEG浓度、浸泡时间及其互作对桔梗种子的发芽率、发芽势和发芽指数均有显著影响。对照条件下桔梗种子的各项萌发指标都显著高于干旱情况下的指标，桔梗种子萌发的最佳浸泡时间为18～24 h。该试验旨在探讨春秋季干旱条件下桔梗种子萌发特性，为打破休眠，促进桔梗种子萌发提供依据。
- Abstract:
- Taking the seeds of Platycodon grandiflorum as raw material,the effect of the concentration of PEG,soaking time and their interaction on seed germination of Platycodon grandiflorus were studied.The results showed that the concentration of PEG,soaking time and their interaction significantly affected the germination percentage,germination vigor and germination index.Seed germination index of Platycodon grandiflorus under different treatments were significantly higher than drought conditions,the optimum soaking time for seed germination of Platycodon grandiflorus was 18～24 h.This experiment aimed to explore the characteristics of seed germination of Platycodon grandiflorum under drought conditions in spring and autumn,and provided evidence for break dormancy and promoted seed germination of Platycodon grandiflorum.
参考文献/References:
［1］刘自刚,胡天明,杨亚丽,等.桔梗花粉萌发与花粉管生长研究［J］.植物研究,2011,31(3)：271-276.
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备注/Memo
第一作者简介：陈兰兰（1991-），女，硕士研究生，现主要从事森林培育等研究工作。E-mail：www.lanlanchen@163.com.责任作者：郭圣茂（1970-），男，博士，副教授，现主要从事林业生态工程等研究工作。E-mail：12155838@qq.com.基金项目：江西省科技厅科技支撑资助项目（20111BBG70030-5）。