MA Xiujuan,YANG Jie,ZHANG Kai,et al.Effect of Salt Stress on the Seeds Germination of Lythrum salicaria Linn and Iris pseudacorus Lridaceae[J].Northern Horticulture,2015,39(21):90-95.[doi:10.11937/bfyy.201521024]
盐胁迫对千屈菜和黄花鸢尾种子萌发的影响
- Title:
- Effect of Salt Stress on the Seeds Germination of Lythrum salicaria Linn and Iris pseudacorus Lridaceae
- 文献标志码:
- A
- 摘要:
- 以千屈菜和黄花鸢尾为试材，采用不同质量浓度（0、2 500、5 000、10 000、15 000 mg/L）的NaCl溶液对千屈菜及黄花鸢尾种子分别进行盐胁迫处理后，测定种子的发芽率、发芽势、发芽指数、种子活力等指标值，研究了盐胁迫对千屈菜及黄花鸢尾种子萌发的影响。结果表明：随着盐浓度的增大，千屈菜和黄花鸢尾种子的发芽率、发芽势、发芽指数、种子活力等指数均呈现下降趋势，种子各项指标降幅均表现为千屈菜<黄花鸢尾；在种子萌发初期，千屈菜种子胚根对盐分胁迫的敏感程度大于胚芽，胚根生长受阻，而黄花鸢尾种子胚芽对盐分胁迫的敏感程度大于胚根，胚芽生长受阻。
- Abstract:
- With Lythrum salicaria Linn and Iris pseudacorus Lridaceae as test materials，the study was carried out to determine the germination ability of the seeds of Lythrum salicaria Linn and Iris pseudacorus Lridaceae.The experiment set different mass concentrations gradient of salt solution which were 0，2 500，5 000，10 000，15 000 mg/L，to deal with the seeds respectively.And the seed germination rate，germination energy，germination index，and vigor index were measured under salt stress.The results showed that the germination rate，germination energy，germination index，and vigor index of seeds of Lythrum salicaria Linn and Iris pseudacorus Lridaceae had declined with the increase of salt concentration.The indicators of the seed of experiment data demonstrated that the degree of decline of Lythrum salicaria Linn was lower than that of Iris pseudacorus Lridaceae.The root of Lythrum salicaria Linn of salt sensitivity was greater than the shoot，and the shoot of Iris pseudacorus Lridaceae of salt sensitivity was greater than root，at the beginning of the seed germination.
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备注/Memo
第一作者简介：马秀娟（1985-），女，硕士，助理工程师，现主要从事生态环境治理等研究工作。E-mail：maxiujuan264@163.com.责任作者：杨洁（1979-），女，博士，高级工程师，现主要从事生态环境保护等研究工作。E-mail：Yangjie79@126.com.基金项目：水利部公益性行业科研专项经费资助项目（201001076）。