北方农业学报 ›› 2025, Vol. 53 ›› Issue (4): 110-120.doi: 10.12190/j.issn.2096-1197.2025.04.10

• 园艺·农业信息技术 • 上一篇    下一篇

不同遮阴条件下赛菊芋花叶突变体叶片光合特性分析

李莲1, 李子敬2, 别正伟3, 王羽2, 吉乃喆2, 许超2, 付怀军4, 秦贺兰2   

  1. 1.北京花卉协会,北京 00006;
    2.北京市园林绿化科学研究院,北京 00102;
    3.北京群芳谱园艺有限公司,北京 00088;
    4.北京市植物园管理处,北京 00093
  • 收稿日期:2025-02-17 出版日期:2025-08-20 发布日期:2025-12-09
  • 通讯作者: 秦贺兰(1971—),女,教授级高级工程师,硕士,主要从事园林植物栽培育种与应用方面的研究工作。
  • 作者简介:李莲(1979—),女,正高级记者,硕士,主要从事生态环境建设理论方面的研究工作。
  • 基金资助:
    绿化植物育种北京市重点实验室林下栎类植物栽植关键技术研究(二期,YZZD202407); 赛菊芋自育新种质栽培技术研究及多功能开发利用(YKYYB202505); 北京市公园管理中心“新优园林植物花叶赛菊芋选种、育种和规模化繁殖研究”(ZX2021027); 北京市财政项目(11000024T000002866678)

Analysis of photosynthetic characteristics of leaves of the variegated mutant of Heliopsis helianthoides under different shading conditions

LI Lian1, LI Zijing2, BIE Zhengwei3, WANG Yu2, JI Naizhe2, XU Chao2, FU Huaijun4, QIN Helan2   

  1. 1. Beijing Flower Association,Beijing 00006,China;
    2. Beijing Academy of Forestry and Landscape Architecture,Beijing 00102,China;
    3. Beijing Qunfangpu Horticulture Co.,Ltd.,Beijing 00088,China;
    4. Management Office of Beijing Botanical Garden,Beijing 00093,China
  • Received:2025-02-17 Online:2025-08-20 Published:2025-12-09

摘要: 【目的】探究不同遮阴条件对赛菊芋花叶突变体叶片光合特性的影响,为其栽培和应用提供参考。【方法】以赛菊芋花叶突变体HY-23F1-2为试验材料,设置30%遮阴、50%遮阴、70%遮阴3个处理,分析不同处理对赛菊芋花叶突变体叶片叶绿素含量、光合生理指标日变化、光合-光响应曲线及光响应参数的影响。【结果】50%遮阴处理赛菊芋花叶突变体HY-23F1-2叶片总叶绿素(Chlt)、叶绿素a(Chla)、叶绿素b(Chlb)含量显著高于30%遮阴和70%遮阴处理(P<0.05);净光合速率(Pn)、气孔导度(Gs)、水分蒸腾速率(E)日变化均为双峰型,且平均值均最高,分别为8.79 μmol/(m2·s)、0.37 mmol/(m2·s)、6.62 mmol/(m2·s),胞间CO2浓度(Ci)日变化呈锯齿形,平均值最低(322.17 μmol/mol);最大净光合速率(Pnmax)、光饱和点(LSP)最高,分别为14.50、1 802.74 μmol/(m2·s)。70%遮阴处理Chlt、Chla、Chlb含量最低;Pn日变化为单峰型,平均值最低[4.63 μmol/(m2·s)];Ci日变化为“W”曲线,平均值最高[342.97 μmol/mol];表观量子效率(AQY)最高(0.047 0 μmol/mol),Pnmax、LSP、光补偿点(LCP)、暗呼吸速率(Rd)最低。相关性分析结果表明,PnCi呈极显著负相关关系(P<0.01)。【结论】50%遮阴处理更适宜赛菊芋花叶突变体HY-23F1-2生长,70%遮阴处理赛菊芋花叶突变体HY-23F1-2表现出更强的耐阴力和光合潜力。

关键词: 赛菊芋花叶突变体, 叶绿素含量, 光合生理指标日变化, 光响应参数

Abstract: 【Objective】To investigate the effects of different shading conditions on the photosynthetic characteristics of leaves in the variegated mutant of Heliopsis helianthoides,thereby providing a reference for its cultivation and application. 【Methods】Using the variegated mutant HY-23F1-2 of H. helianthoides as the experimental material,three treatments were established:30% shading,50% shading,and 70% shading. The effects of different treatments on chlorophyll content,diurnal variations in photosynthetic physiological indices,photosynthetic light-response curves,and light-response parameters in the leaves of the variegated mutant of H. helianthoides were analyzed.【Results】Under the 50% shading treatment,the contents of total chlorophyll(Chlt),chlorophyll a(Chla),and chlorophyll b(Chlb) in the leaves of the variegated mutant HY-23F1-2 of H. helianthoides were significantly higher than those under the 30% and 70% shading treatments(P<0.05). The diurnal variations in net photosynthetic rate(Pn),stomatal conductance(Gs),and transpiration rate(E) all exhibited a bimodal pattern,with the highest average values of 8.79 μmol/(m2·s),0.37 mmol/(m2·s),and 6.62 mmol/(m2·s),respectively. The diurnal variation in intercellular CO2 concentration(Ci)showed a serrated pattern,with the lowest average value of 322.17 μmol/mol. The maximum net photosynthetic rate(Pnmax)and light saturation point(LSP)were the highest,at 14.50 and 1 802.74 μmol/(m2·s),respectively. Under the 70% shading treatment,the contents of Chlt,Chla,and Chlb were the lowest. The diurnal variation in Pn displayed a unimodal pattern,with the lowest average value of 4.63 μmol/(m2·s). The diurnal variation in Ci presented a W curve trend,with the highest average value of 342.97 μmol/mol. The apparent quantum yield(AQY) was the highest at 0.047 0 μmol/mol,while Pnmax,LSP,light compensation point(LCP),and dark respiration rate(Rd)were the lowest. Correlation analysis revealed extremely significant negative correlation between Pn and CiP<0.01).【Conclusion】The 50% shading treatment is more suitable for the growth of the variegated mutant HY-23F1-2 of H. helianthoides,and under the 70% shading treatment,the variegated mutant HY-23F1-2 of H. helianthoides exhibits stronger shade tolerance and photosynthetic potential.

Key words: Variegated mutant of Heliopsis helianthoides, Chlorophyll content, Diurnal variations in photosynthetic physiological indices, Light-response parameters

中图分类号: 

  • S682