[种子引发对盐胁迫下夏枯草种子萌发耐盐性的影响]
[Effects of seed priming on salt tolerance in Prunella vulgaris seed germination under saline conditions].
作者信息
Zhang Xianxiu, Guo Qiaosheng, Shen Xuelian
机构信息
Institute of Chinese Medicinal Materials, Nanjing Agricultural University, Nanjing 210095, China.
出版信息
Zhongguo Zhong Yao Za Zhi. 2009 Apr;34(8):944-7.
OBJECTIVE
Selecting an effective way to increase salt-resistance of Prunella vulgaris seed through seed priming technology.
METHOD
The treatment of salt stress to P. vulgaris seeds was made by the different concentrations of NaCl solutions. Primed seeds germinated under 0.8% NaCl.
RESULT
As concentrations of NaCl increasing, seed germination percentage, germination index and vitality index reduced. Primed with 15%-35% PEG, 100-500 mg x L(-1) GA3 and 0.4%-2.0% KNO3-KH2PO4 could enhance seeds germination index and vitality index under salt stress while treated with NaCl seeds germination percentage reduced.
CONCLUSION
Treated with PEG, GA3, KNO3-KH2PO4 under proper concentration, the seed vigor, seed resistance under salt stress increased.
目的
通过种子引发技术筛选提高夏枯草种子耐盐性的有效方法。
方法
用不同浓度的NaCl溶液对夏枯草种子进行盐胁迫处理。引发后的种子在0.8%NaCl条件下萌发。
结果
随着NaCl浓度升高，种子发芽率、发芽指数和活力指数降低。用15%-35%PEG、100-500mg·L⁻¹GA₃和0.4%-2.0%KNO₃-KH₂PO₄引发可提高盐胁迫下种子的发芽指数和活力指数，而用NaCl处理时种子发芽率降低。
结论
用适当浓度的PEG、GA₃、KNO₃-KH₂PO₄处理后，种子活力及盐胁迫下的抗性增强。
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