头花蓼种子发芽条件研究

Germination Characters of Polygonum capitatum Seed

目的：研究不同条件对头花蓼种子发芽的影响,为头花蓼种子发芽率检验及田间播种提供参考。方法：考察温度、培养方式以及盐胁迫对头花蓼种子发芽的影响,用培养皿法培养种子,统计发芽率。结果：头花蓼种子于15℃发芽率最高;在盐胁迫条件下,随着盐浓度的升高种子发芽率呈下降趋势,低盐条件下,发芽率与对照差异不显著;在同一温度条件下光培养比暗培养发芽率高,纸间比纸上发芽率高。结论：头花蓼种子发芽率检验时应选择15℃,有光照条件、双层滤纸纸间培养方式进行,在发芽试验进行20 d时,计算种子发芽势。头花蓼种子播种时,播种育苗田盐浓度不能高于1-2 g/L,过高影响头花蓼种子发芽。

Objective：To study the influence of the Polygonum capitatum seed germination by different temperatures,cultivating methods and salt stresses,which can provide reference for seed germination inspection and field seeding.Methods：Cultivating seeds in Petri dishes and count germination rate.Results：The highest germination rate occurs at 15 ℃;In salt stress condition,with the increase of the salt concentration seed germination rate declines and under the condition of low salt concentration germination rate shows no obvious difference with the controlling group;at the same temperature,germination rate is higher when cultivated with light than under dark,and seeds cultured in the filters have higher germination rate than those which cultured on the filter.Conclusion：Germination experiment should carry out at 15 ℃,with light and between paper.Seeds germinate potential should calculate after the germination experiment progressing 20 d.When planting,salt concentration of the planting seedling field can not above 1~2 g/L,otherwise the germination will be affected.