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中国农学通报

中国农学通报 ›› 2026, Vol. 42 ›› Issue (10): 21-26.doi: 10.11924/j.issn.1000-6850.casb2025-0666

• 农学·农业基础科学 • 上一篇    下一篇

茉莉酸甲酯对艾草幼苗叶片生长及光合作用的影响

秦含情(), 侯双扬, 秦婷, 杨树琼, 赵青平()   

  1. 南阳师范学院/河南省艾草开发利用工程技术研究中心， 河南南阳 473061
  • 收稿日期:2025-08-08 修回日期:2026-04-15 出版日期:2026-05-25 发布日期:2026-05-27
  • 通讯作者:
    赵青平，女，1987年出生，河南三门峡人，讲师，博士，研究方向为植物生理学与植物细胞信号转导。通信地址：473061 河南省南阳市卧龙路1638号 南阳师范学院东区，E-mail：。
  • 作者简介:

    秦含情，女，2001年出生，河南开封人，在读研究生，研究方向为植物生理学。通信地址：473061 河南省南阳市卧龙路1638号 南阳师范学院东区，E-mail：。

  • 基金资助:
    国家自然科学基金“钙转运蛋白DHPM1应答强蓝光调节拟南芥下胚轴向光性的机制分析”(32100225); 河南省科技研发计划联合基金（重点项目）“航天诱变南阳艾草新品种选育和高附加值太空艾精油系列产品开发”(235200810048); 南阳师范学院博士专项“拟南芥HPRP1蛋白调节下胚轴向光弯曲的分子机制解析”(2020ZX016)

Effects of Methyl Jasmonate on Leaf Morphogenesis and Photosynthetic Performance of Artemisia argyi Seedlings

QIN Hanqing(), HOU Shuangyang, QIN Ting, YANG Shuqiong, ZHAO Qingping()   

  1. Nanyang Normal University/ Henan Artemisia argyi Development and Utilization Engineering Technology Research Center, Nanyang, Henan 473061
  • Received:2025-08-08 Revised:2026-04-15 Published:2026-05-25 Online:2026-05-27

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摘要：

为明确提升艾草光合性能而不抑制其叶片生长的最适茉莉酸甲酯(methyl jasmonate，MeJA)处理浓度，以实生艾草幼苗为材料，设置0、100、200、400、800 μmol/L 5个喷施浓度，测定叶片生长指标、叶绿素含量、净光合速率及气孔导度，系统分析MeJA对艾草幼苗生长与光合生理的影响。结果表明，低浓度(100~400 μmol/L)MeJA处理对叶片长、宽、面积、干重、单位面积干重、湿重和单位面积湿重均无显著抑制；高浓度(800 μmol/L)MeJA处理显著降低叶长、叶宽与叶面积，但不影响单位面积干重与湿重。MeJA对气孔导度无显著影响，但可显著提高叶绿素含量，200、400 μmol/L MeJA处理同时提升叶绿素a与叶绿素b含量，100 μmol/L MeJA处理仅显著提升叶绿素a含量，800 μmol/L MeJA处理仅显著提升叶绿素b含量。此外，仅400 μmol/L MeJA处理可显著提高艾草幼苗净光合速率。研究表明，400 μmol/L MeJA通过提高艾草叶片光合作用性能而非促进叶片生长增强艾草幼苗的光合作用。

关键词: 茉莉酸甲酯, 艾草, 叶片生长, 净光合速率, 气孔导度, 叶绿素, 栽培调控

Abstract:

The paper aims to identify the optimal concentration of methyl jasmonate (MeJA) that enhances photosynthetic performance without inhibiting leaf growth in Artemisia argyi. In this study, A.argyi seedlings were used as materials, and five spraying concentrations of 0, 100, 200, 400 and 800 μmol/L were set to determine leaf growth index, chlorophyll content, net photosynthetic rate and stomatal conductance. The effects of MeJA on the growth and photosynthetic physiology of A. argyi seedlings were systematically analyzed. The results indicated that 100-400 μmol/L MeJA showed no significant effects on leaf length, width, area, dry weight, dry weight per unit area, fresh weight, or fresh weight per unit area in A. argyi seedlings. 800 μmol/L MeJA significantly reduced leaf length, width and area, but did not affect dry and fresh weights per unit, indicating that high concentrations of MeJA (800 μmol/L) inhibit biomass accumulation of A. argyi seedlings by suppressing leaf expansion. Exogenous MeJA had no effect on stomatal conductance but altered chlorophyll content and net photosynthetic rate. Both 200 and 400 μmol/L MeJA effectively enhanced the contents of chlorophyll a and chlorophyll b; after treatment with 100 μmol/L MeJA, the content of chlorophyll a significantly increased, whereas after treatment with 800 μmol/L MeJA, only the content of chlorophyll b increased. In addition, treatment with 400 μmol/L MeJA alone effectively increased the net photosynthetic rate of A. argyi. These results show that 400 μmol/L MeJA improves photosynthetic capacity in A. argyi by improving the photosynthetic performance of A. argyi leaves rather than promoting leaf growth.

Key words: methyl jasmonate, Artemisia argyi, leaf growth, net photosynthetic rate, stomatal conductance, chlorophyll content, cultivation regulation

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