JIANG Li-na,ZHAO Yi-peng,CAI Zu-guo,et al.Effect of Different Concentrations of Zn2+ on Seeds Germination and Seedling Growth of Rheum rhaponticum L.[J].HEILONGJIANG AGRICULTURAL SCIENCES,2015,(10):79-81,82.[doi:10.11942/j.issn1002-2767.2015.10.0079]
Zn2+对菜用大黄种子萌发和幼苗生长的影响
- Title:
- Effect of Different Concentrations of Zn2+ on Seeds Germination and Seedling Growth of Rheum rhaponticum L.
- 文章编号:
- 1002-2767（2015）10-0079-03
- Keywords:
- Rheum rhaponticumL.; seeds germination; seedling growth
- 分类号:
- Q945.78；S644.9
- 文献标志码:
- A
- 摘要:
- 为了科学种植菜用大黄，以菜用大黄种子为试验材料，研究不同Zn2+浓度（0、20、50、100、150、200、300、500、700 mg?L-1）对菜用大黄种子萌发及幼苗生长的影响。结果表明：菜用大黄种子的发芽指标随着Zn2+浓度的增加表现为先升高后降低的趋势。发芽势、发芽率、发芽指数都是在Zn2+浓度为100 mg?L-1时达到最大，电导率则在Zn2+浓度为100 mg?L-1时最低，幼苗根长、茎长和叶绿素的含量都随着Zn2+浓度的增加而逐渐降低。研究表明，适量的锌虽然能促进种子的萌发，但是幼苗的根长、茎长和叶绿素含量将受到不同程度的影响。
- Abstract:
- For scientific planting of Rheum rhaponticum L.，taking seeds of Rheum rhaponticum L.as experimental material,the effect of different concentrations of Zn2+(0,20,50,100,150,200,500 and 700 mg?L-1)on seeds germination and seedling growth of Rheum rhaponticum L.was studied. The results indicated that all of the data related to germination firstly rose and then dropped with the increasing of Zn2+ concentration.The germination potential,germination rate and germination index were up to the maximum value by using 100 mg?L-1 Zn2+ concentration,while the conductivity was the lowest.Seeding root length,stem length and chlorophyll content decreased with the concentration of Zn2+ increased.The results showed that although appropriate amount of Zn2+ could promote the germination of seeds,but the seeding root length,stem length and chlorophyll content had been inhibited to a certain degree.
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备注/Memo
收稿日期：2015-07-21基金项目：河南省科技厅基础前沿资助项目(122300410134)第一作者简介：姜立娜（1985-），女，山东省淄博市人，博士，讲师，从事园艺植物遗传育种与生物技术研究。E-mail:linajiang85@163.com。