期刊论文

Effects of Water Potential and Salt Stress on Seed Germination and Root Growth in Arabidopsis

中文

北方园艺

1001-0009

2019

15

8-14

10.11937/bfyy.20184111

湖南省重点研发计划资助项目(2016NK2143) 湖南省重点研发计划资助项目(2017NK2252).

本校为第一机构

以拟南芥为试验材料,向培养基中添加不同浓度的NaCl模拟盐胁迫、不同比例的PEG-6000模拟水势胁迫,观察并记录种子萌发率、幼苗根长、幼苗存活率等生理指标,检测幼苗中丙二醛(MDA)含量,研究了盐胁迫和水势胁迫对拟南芥种子萌发及幼苗生长的影响,以期明确盐胁迫程度和水势影响拟南芥植株生理状态的规律,为水势和盐胁迫处理提供依据.结果 表明:当NaCl浓度等于及高于150 mmol·L-1时,幼苗平均根长为5.2 mm,显著低于对照组(24.8 mm);幼苗平均存活率为52.1％,显著低于对照组(98.1％).当水势等于及低于-0.7 MPa时,幼苗无侧根生长,平均存活率为89.2％,显著低于对照组(98.7％),由此可知,NaCl浓度150 mmol...

To clarify the effects of salt stress and water potential on seed germination and seedling growth in Arabidopsis. NaCl and PEG-6000 with different concentration was added into medium,respectively,to simulate salt stress and water potential of different degree.The effects on seed germination rate,root length,survival rate of seedling and MDA content in seedling were measured.The results showed that while the concentration of NaCl solution was equal to or higher than 150 mmol·L-1 the average root length of treated group was 5.2 mm,which was sign...