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以车前种子为试材,采用单盐胁迫的方法,研究不同浓度的NaCl和NaHCO3溶液胁迫处理对车前种子萌发及解除胁迫后萌发的影响,探讨车前种子耐盐碱的能力。结果表明:浓度为4‰的NaCl和NaHCO3的溶液均对车前种子的萌发起促进作用,随着浓度的升高,盐胁迫对种子萌发的抑制作用逐渐增强,呈现显著地负相关关系;影响车前种子相对发芽率的NaCl浓度的适宜值和临界值分别是4.69‰和7.42‰;影响车前种子相对发芽率的NaHCO3浓度的适宜值和临界值分别是12.44‰和18.35‰;解除胁迫后,NaCl胁迫的种子复萌率在13.10%~56.33%,NaHCO3胁迫的种子复萌率在12.31%~36.52%。综上所述,车前种子具有较强的耐盐碱能力。
The seeds of seedlings were taken as test materials and single salt stress method was used to study the effects of different concentrations of NaCl and NaHCO3 solution on the germination and germination of seedlings before stress relieving. The results showed that NaCl and NaHCO3 at a concentration of 4 ‰ all promoted the germination of seed in the car, and the inhibitory effect of salt stress on seed germination gradually increased with the increasing of concentration, showing a significant negative correlation The appropriate value and critical value of NaCl concentration of seed germination rate were 4.69 ‰ and 7.42 ‰, respectively. The appropriate value and critical value of NaHCO3 concentration affecting seed germination rate were 12.44 ‰ and 18.35 ‰, respectively. The rate of seed germination was 13.10% ~ 56.33% under NaCl stress and 12.31% ~ 36.52% under NaHCO3 stress. In summary, the car seed has a strong ability to salinity.