山西农业大学学报（自然科学版）2016，Vol.36Issue(9)：644-648,5.
文冠果种子吸水和萌发对盐碱胁迫条件的响应
Response Xanthoceras sorbifolia Bunge seeds germination and water salinity stress conditions
摘要
Abstract
Objective]To explore the adaptability of Xanthoceras sorbifolia Bunge seeds to saline-alkali habitat.[Meth-od]We exposed Xanthoceras sorbifolia Bunge seeds to different concentration of salt and alkali solution (calculated as salt concentration,three gradients of 0.2%,0.5% and 0.8%),and analyzed the water absorption and germination characteristics of the seeds.[Results]Results showed that,during their germination,the water absorption rate within 0-6 hours was fastest,relatively stable within 12-42 hours,and slower for 54-1 14 hours.However,the water absorp-tion rate under salt and severe salt-alkali mixture stress was significantly restrained,while the water absorption rate under the other conditions was greater than that of control.The seed germination rate under mild salt and alkali stress was higher than that of control,whereas the germination rate under the other stress conditions was reduced significant-ly,reaching a minimum under the concentration of 0.8% (NaCl∶Na2 SO4 =9∶1),only 14.63% of control (very signifi-cant difference,P <0.01).Mild salt and alkali stress promoted X anthoceras sorbifolia Bunge seeds germination,and high concentration of stress and salt-alkali mixture stress markedly inhibited seeds germination.[Conclusion]This study will lay the foundation for using exogenous measures to improve seed water absorbing ability and promote seed germination and seedling emergence.关键词
盐碱胁迫/文冠果/发芽率Key words
Saline alkali stress/Xanthoceras sorbifolia Bunge seed/Germination rate分类
农业科技引用本文复制引用
田吉,樊兴路,王林,张芸香,郭晋平,白晋华..文冠果种子吸水和萌发对盐碱胁迫条件的响应[J].山西农业大学学报（自然科学版）,2016,36(9):644-648,5.基金项目
山西省科技攻关项目(20120311015-3) （20120311015-3）
