XU Xiao-yu,ZHANG Feng-yin,ZHANG Fang-jun.Effect of NaCl Stress on Seed Germination and Seedling Growth of Bellis perennis[J].Northern Horticulture,2014,38(14):52-54.
氯化钠胁迫对雏菊种子萌发及幼苗生长的影响
- Title:
- Effect of NaCl Stress on Seed Germination and Seedling Growth of Bellis perennis
- 文章编号:
- 1001-0009（2014）14-0052-03
- Keywords:
- Bellis perenni; seed; germination; salt stress
- 分类号:
- S 682.1+1
- 文献标志码:
- A
- 摘要:
- 以雏菊种子为试材，在种子萌发过程中，研究了不同浓度NaCl胁迫对雏菊种子的发芽率、发芽势、发芽指数、相对盐害率及幼苗的根长、茎长与鲜重等指标的影响。结果表明：不同浓度的NaCl胁迫对雏菊种子萌发和幼苗生长各指标的影响不尽相同，2.9 g/L以上的NaCl对雏菊种子发芽指数和幼苗的根长有极显著影响，5.8 g/L以上的NaCl显著降低了雏菊种子的发芽势和幼苗的茎长生长指标，11.6 g/L以上的NaCl则使其发芽率和幼苗的鲜重显著减少。种子受到较高浓度>11.6 g/L的NaCl胁迫危害较大，从而表现出较高的盐害率。表明雏菊种子能够耐受较低浓度的NaCl，一定浓度的NaCl对雏菊种子的萌发及幼苗的生长具有抑制作用。
- Abstract:
- Taking seeds of Bellis perennis as experimental materials,effect of different concentrations of NaCl solution on germination energy,germination rate and germination index of seed and root length,stem length and fresh weight of seedlings were measured and studied.The results showed that different concentration of NaCl had different effects on indexes of seed germination and seedling growth of Bellis perennis,2.9 g/L and the higher concentration of NaCl had very significant effect on germination index of the seeds and root length of seedlings 5.8 g/L and the higher concentration of NaCl significantly reduced germination energy of seeds and the stem length of seedlings11.6 g/L and the higher concentration of NaCl caused significant reduction of seed germination rate and seedling fresh weight.High concentration (11.6 g/L and the higher) of NaCl had great harm on seeds of Bellis perennis,so the relative salt injury rate was high.This showed that seed of Bellis perennis could tolerate low concentration of NaCl,but certain concentration of NaCl had inhibitory effect on seed germination and seedling growth of Bellis perennis.
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备注/Memo
第一作者简介：徐小玉（1975-），女，硕士，讲师，现主要从事园林植物栽培与应用等教学与科研工作。E-mail：xxiaoyever@sohu.com.