GENG Xiaotong,GAO Bohan,LIANG Huifang,et al.Effects of Methyl Jasmonate on the Growth of Pinellia ternate Seedlings Under NaCl Stress[J].Northern Horticulture,2026,(9):91-98.[doi:10.11937/bfyy.20253663]
茉莉酸甲酯对盐胁迫下半夏幼苗生长的影响
- Title:
- Effects of Methyl Jasmonate on the Growth of Pinellia ternate Seedlings Under NaCl Stress
- 文章编号:
- 1001-0009(2026)09-0091-08
- Keywords:
- methyl jasmonate; Pinellia ternate; NaCl stress; germination; growth physiology; osmotic regulating substances
- 分类号:
- S567
- 文献标志码:
- A
- 摘要:
- 以半夏为试材，采用100 mmol·L-1 NaCl溶液模拟盐胁迫，设置10、50、100、200、400 μmol·L-1外源茉莉酸钾酯(MeJA)对半夏种茎进行处理，同时以无NaCl胁迫且未添加外源MeJA为CK1，有NaCl胁迫但未添加外源MeJA为CK2，测定半夏萌发指标、生长生理指标、渗透调节物质，研究了MeJA对盐胁迫下半夏萌发及幼苗生长的影响，以期为实际生产中利用MeJA提高植物耐盐能力提供参考依据。结果表明：NaCl胁迫抑制了半夏种茎发芽势、发芽率、发芽指数、活力指数、幼苗各器官长度、叶面积、鲜质量、株高、各器官含水量和叶绿素a、叶绿素b、总叶绿素、可溶性糖含量，提高了可溶性蛋白质、游离氨基酸含量。外源MeJA能调节NaCl胁迫对半夏种茎萌发及提高幼苗叶长、叶宽、叶面积、块茎长、块茎宽、茎长、叶柄长、株高、叶柄鲜质量、叶片含水量、叶柄含水量、茎含水量、单株含水量、叶绿素a、叶绿素b、总叶绿素、可溶性蛋白质、可溶性糖，并降低根冠比，增强了半夏种茎及幼苗对盐胁迫的适应能力。加权TOPSIS与GRA融合模型的综合分析得到400 μmol·L-1 MeJA缓解效果最佳。
- Abstract:
- Taking Pinellia ternate as the test material，100 mmol·L-1 NaCl solution was used to simulate alkali stress.Exogenous MeJA at concentrations of 10，50，100，200，400 μmol·L-1 was set to treat the seed stems of Pinellia ternate.At the same time，CK1 was determined with no NaCl stress and no addition of exogenous MeJA，and CK2 was determined with NaCl stress but no addition of exogenous MeJA.The effects of methyl jasmonate on the germination and seedling growth of Pinellia ternate under salt stress were studied，in order to provide a reference for clarifying the role of methyl jasmonate in alleviating salt damage to Pinellia ternate.The results showed that NaCl stress inhibited the germination potential，germination rate，germination index，vitality index，length of each organ，leaf area，fresh weight，plant height，water content of each organ and chlorophyll a，chlorophyll b，total chlorophyll,soluble sugar content of Pinellia ternate seeds，while increasing the contents of soluble protein and free amino acids.Exogenous MeJA could regulate effects of NaCl stress on the stem germination of Pinellia ternate，increase the leaf length，leaf width，leaf area，tuber length，tuber width，stem length，petiole length，plant height，fresh petiole weight，leaf moisture content，petiole moisture content，stem moisture content，individual plant moisture content，chlorophyll a，chlorophyll b，total chlorophyll，soluble protein，and soluble sugar of seedlings，and reduce the root-crown ratio.The adaptability of Pinellia ternate stems and seedlings to salt stress has been enhanced.The comprehensive analysis of the weighted TOPSIS and GRA fusion model shows that 400 μmol·L-1 MeJA has the best remission effect.
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备注/Memo
第一作者简介：耿晓桐（1995-），女，硕士，讲师，现主要从事中药质量控制等研究工作。E-mail：825630046@qq.com.责任作者：王海燕（1982-），女，硕士，副教授，现主要从事中药质量控制等研究工作。E-mail：512201369@qq.com.基金项目：河南省重点研发专项资助项目（241111311400）；河南省科技攻关资助项目（242102110202）。收稿日期：2025-10-21