LIU Jie,ZHANG Jian-kun,ZHANG Xue-zheng.Study on the Germination Properties of Seeds of Chloris virgate Under NaCl Stress[J].Northern Horticulture,2013,37(21):92-94.
NaCl胁迫下虎尾草种子萌发特性的研究
- Title:
- Study on the Germination Properties of Seeds of Chloris virgate Under NaCl Stress
- 文章编号:
- 1001-0009（2013）21-0092-03
- Keywords:
- NaCl stress; Chloris virgate; seed germination; recovery
- 分类号:
- Q 945.34
- 文献标志码:
- A
- 摘要:
- 以虎尾草种子为试材，研究了0、50、100、150、200、250 mmol/L NaCl胁迫处理对其发芽率、发芽指数及胚芽、胚根生长情况的影响；并将胁迫下未萌发种子转移至蒸馏水中，观察其在胁迫解除后的恢复情况。结果表明：虎尾草种子的发芽率、发芽速度随着NaCl胁迫浓度的增大而降低，萌发率和处理浓度之间呈显著负相关。而且随着NaCl胁迫浓度的增大，对胚芽、胚根生长的抑制作用均不断加大，且胚根受抑制作用要大于胚芽。复萌试验结果表明，虎尾草种子在盐溶液中保持一定活力，胁迫解除之后，仍能迅速萌发。经一定浓度盐锻炼后，虎尾草幼苗恢复生长的能力明显提高。
- Abstract:
- Taking the seeds of Chloris virgate as test material，the effect of different concentrations of NaCl salinity 0，50，100，150，200，250 mmol/L on the germination rate，germination index and growth status of radicle and germ were determined；after removing the stress，the response of the seed and seedling were also observed.The results showed the germination rate and speed of Chloris virgate seeds decreased with stress of NaCl increasing，and there was significant negative correlation between germination rate and salinity.With salinity increasing，the radicle and germ lengths decreased and the inhibition on the radicle was more greatly than that on the germ.Recovery experiment revealed that Chloris virgate seeds could keep viable in salt solution.After removing stress，the seeds also germinate rapidly.After being tempered by the salt，the ability of growing of the seedlings was improved.
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备注/Memo
第一作者简介：刘杰(1984-)，女，博士，讲师，现主要从事植物逆境生理生态方面的教学与科研工作。E-mail：liujie655@163.com.