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中国农学通报

中国农学通报 ›› 2025, Vol. 41 ›› Issue (34): 53-62.doi: 10.11924/j.issn.1000-6850.casb2025-0225

• 林学·园艺·园林 • 上一篇    下一篇

红光光照时长对凉粉草插条生理生化特性和品质的影响

徐梅华(), 全昌乾, 韦范, 汤丹峰()   

  1. 广西药用资源保护与遗传改良重点实验室/广西壮族自治区中药资源智慧创制工程研究中心/国家中医药传承创新中心/广西壮族自治区药用植物园，南宁 530023
  • 收稿日期:2025-03-20 修回日期:2025-10-25 出版日期:2025-12-04 发布日期:2025-12-04
  • 通讯作者:
    汤丹峰，男，1986年出生，副研究员，博士，从事药用植物栽培学与分子生物学研究。通信地址：530023 广西壮族自治区南宁市长堽路189号 广西壮族自治区药用植物园，E-mail：。
  • 作者简介:

    徐梅华，女，1997年出生，从事药用植物栽培研究，E-mail：。

  • 基金资助:
    广西重点研发计划“广西区域特色药食同源植物凉粉草新种质创制及高胶质提升技术研究”(桂科AB24010015); 国家自然科学基金“红光介导PpRAV1转录因子调控凉粉草多糖生物合成的分子机制研究”(82460754); 广西药用资源保护与遗传改良重点实验室自主课题“凉粉草根系细胞壁果胶形态和去甲酯化修饰对Cd积累的影响”(KL2025ZZ04); 国家自然科学基金“仙草半乳糖醛酸合成关键酶GAE的筛选及功能研究”(82260750)

Effect of Red Lighting Duration on Physio-biochemical Characteristics and Quality of Cuttings from Platostoma palustre

XU Meihua(), QUAN Changqian, WEI Fan, TANG Danfeng()   

  1. Guangxi Key Laboratory of Medicinal Resources Protection and Genetic Improvement/ Guangxi Engineering Research Center of TCM Resource Intelligent Creation/ National Center for TCM Inheritance and Innovation/ Guangxi Botanical Garden of Medicinal Plants, Nanning 530023
  • Received:2025-03-20 Revised:2025-10-25 Published:2025-12-04 Online:2025-12-04

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摘要：

本研究旨在明确适宜凉粉草生长并提升其品质的光照时长，为凉粉草的规范化、规模化种植提供科学依据。采用人工红色LED光源，以12 h光照处理作为对照，分别对TW、LS、GD、YN 4种凉粉草实施18 h光照处理，进而评估延长红光光照时长对凉粉草插条的株高、生物量、根系发育、根系活力、可溶性蛋白含量、SOD活性、黄酮含量、可溶性糖含量和可溶性果胶含量的影响。结果表明，延长红光光照时长促进了凉粉草插条不定根的生长，根系伸长，根系吸收面积增大，根系发达且根系活力增强。与对照相比，TW、LS、GD、YN的茎叶鲜重分别增加了19.36%、49.33%、1.73%、24.01%。延长红光光照时长使TW、LS、YN的黄酮含量减少，可溶性糖含量、可溶性果胶含量均显著降低；而GD的黄酮含量显著增加了42.32%，可溶性糖、可溶性果胶含量无显著变化。试验认为，延长红光光照时长可以促进4种凉粉草插条的生长发育，但不同凉粉草种质对光照时间的响应和需求存在差异，延长红光光照时长适宜GD凉粉草的种植生产，其生长指标和黄酮含量均有明显提升。

关键词: 凉粉草, LED光源, 红光光照时长, 扦插, 生根, 黄酮, 可溶性糖, 种质特异性

Abstract:

The suitable light duration for the growth and quality improvement of Platostoma palustre was determined, which provided a scientific basis for the standardized and large-scale cultivation of P. palustre. An artificial red LED light source was employed with a 12-hour photoperiod as a control to assess the impact of supplemental red lighting duration (18 hours) on plant height, biomass, root development, root vitality, soluble protein content, SOD activity, flavonoid content, soluble sugar content, and soluble pectin content of four P. palustre germplasms (TW, LS, GD and YN). The results showed that increasing the duration of supplemental red lighting promoted adventitious root growth in P. palustre cuttings, leading to root elongation, an expanded root absorption area, well-developed roots, and enhanced root vitality. This enhancement facilitated nutrient absorption in P. palustre, subsequently promoting the growth and development of its aboveground parts. The stem and leaf of TW, LS, GD and YN exhibited an increase in fresh weight by 19.36%, 49.33%, 1.73%, and 24.01%, respectively. Compared to the control, supplemental red lighting duration resulted in a reduction in flavonoid content for TW, LS and YN, a significant decrease in soluble sugar and pectin content; while GD showed a significant increase in flavonoid content by 42.32%, with no significant changes in soluble sugar and pectin content. Increasing the duration of red light exposure could enhance the growth and development of four types of P. palustre cuttings. However, there were variations in the response and light requirements among different P. palustre germplasms. Following red light supplementation, GD was suitable for cultivation, with significant improvements in growth and flavonoid content.

Key words: Platostoma palustre, LED light source, red lighting duration, cuttings, rooting, flavonoid, soluble sugar, germplasm specificity