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中国农学通报

中国农学通报 ›› 2026, Vol. 42 ›› Issue (1): 92-102.doi: 10.11924/j.issn.1000-6850.casb2025-0287

• 林学·园艺·园林 • 上一篇    下一篇

芍药叶形态性状和叶绿素荧光对干旱胁迫的响应及抗旱性评价

黄蓉(), 汤玲, 王卫成, 常强, 李宽莹, 贺欢, 潘艳花()   

  1. 甘肃省农业科学院林果花卉研究所，兰州 730070
  • 收稿日期:2025-04-14 修回日期:2025-12-12 出版日期:2026-01-15 发布日期:2026-01-15
  • 通讯作者:
    潘艳花，女，1985年出生，甘肃金昌人，正高级农艺师，硕士，研究方向为花卉育种及栽培等研究工作。通信地址：730070 甘肃省兰州市安宁区农科院新村1号，E-mail：。
  • 作者简介:

    黄蓉，女，1989年出生，甘肃天水人，高级工程师，博士，研究方向为观赏植物品种选育及栽培等研究工作。通信地址：730070 甘肃省兰州市安宁区农科院新村1号，E-mail：。

  • 基金资助:
    甘肃省农业科学院博士基金“新特异花卉种质资源收集与创制”(2023GAAS39); 甘肃省农业科学院人才培养专项“几种区域特色作物种质资源抗逆性与品质评价及优异基因挖掘”(2024GAAS30); 甘肃省科技厅重点研发项目“西北冷量区芍药切花错峰供应高效栽培技术研究”(2024YFNA001); 甘肃省科技厅东西部协作项目“切花芍药新品种引进、筛选及高效栽培技术集成示范”(24CXNA022); 中共甘肃省委人才工作领导小组“陇原青年英才”资助项目([2023]11号); 甘肃省农业科学院重点研发项目“加工型牡丹品种筛选栽培及特色加工产品开发”(2025GAAS21)

Response of Morphological Traits and Chlorophyll Fluorescence of Paeonia lactiflora Leaves to Drought Stress and Evaluation of Drought Resistance

HUANG Rong(), TANG Ling, WANG Weicheng, CHANG Qiang, LI Kuanying, HE Huan, PAN Yanhua()   

  1. Institute of Fruit and Floriculture Research, Gansu Academy of Agricultural Sciences, Lanzhou 730070
  • Received:2025-04-14 Revised:2025-12-12 Published:2026-01-15 Online:2026-01-15

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摘要： 为明确不同芍药品种的抗旱差异，筛选抗旱性优异品种，以‘三点红’、‘春晓’和‘沙拉’3个芍药品种为试验材料，采用盆栽自然干旱法，设置0 d（未干旱处理）、7 d（中度干旱）、14 d（重度干旱）处理，测定叶长、叶宽、叶面积、叶周长、叶厚度、相对叶绿素含量、叶氮含量和叶绿素荧光参数等指标，通过相关性分析与主成分分析综合评价抗旱性。结果表明：（1）干旱胁迫下，3个芍药品种的叶长、叶宽、叶面积和叶周长随着干旱胁迫的加剧逐渐降低，叶厚度逐渐增加。（2）3个芍药品种的相对叶绿素含量(SPAD)和叶氮含量(LNC)均随着干旱时长的增加而逐渐降低，且干旱14 d的SPAD和LNC与0 d的差异显著(P<0.05)。（3）3个芍药品种的F0和F0/Fm在干旱7 d后增加，而在干旱14 d后降低；Fv/F0在干旱7 d降低，而在干旱14 d后增加；Fv、Fm、Fv/Fm和PIabs随着干旱时长的增加而呈降低趋势。（4）3个芍药品种的叶绿素荧光O-J-I-P曲线随着时间的增加逐渐上升，在经过P点时逐渐平缓。在受到干旱胁迫时，芍药的叶形态性状和叶绿素荧光参数协同变化以适应干旱环境，3个芍药品种抗旱性由强到弱表现为‘沙拉’>‘春晓’>‘三点红’。

关键词: 芍药, 干旱胁迫, 叶形态性状, 叶绿素荧光, 动力学曲线, 综合评价, 主成分分析

Abstract:

The study aims to clarify the difference of drought resistance among different herbaceous peony varieties, and screen the varieties with excellent drought resistance. In this study, three herbaceous peony varieties ‘Sandianhong’, ‘Chunxiao’ and ‘Shala’ were used as experimental materials. The potted natural drought method was used to set 0 day (non-drought treatment), 7 days (moderate drought), and 14 days (severe drought) treatments. Leaf length, leaf width, leaf area, leaf circumference, leaf thickness, relative chlorophyll content, leaf nitrogen content, and chlorophyll fluorescence parameters were measured to comprehensively evaluate drought resistance through correlation analysis and principal component analysis. The results indicated that: (1) under drought stress, the leaf length, leaf width, leaf area and leaf circumference of the three P. lactiflora cultivars decreased gradually with the increase of drought stress, and the leaf thickness increased. (2) The relative chlorophyll content (SPAD) and leaf nitrogen content (LNC) of the three P. lactiflora varieties gradually decreased with the increase of drought duration, and the SPAD and LNC of the 14 days drought were significantly different from those of the 0 day drought (P<0.05). (3) The F0 and F0/Fm of three P. lactiflora varieties increased after 7 days of drought, and decreased after 14 days; Fv/F0 decreased after 7 days of drought, but increased after 14 days; Fv, Fm, Fv/Fm and PIabs decreased with the increase of drought duration. (4) The chlorophyll fluorescence O-J-I-P curves of the three P. lactiflora varieties gradually increased with time, and gradually became gentle when passing through the P point. Under drought stress, the leaf morphological traits and chlorophyll fluorescence parameters of P. lactiflora changed synergistically to adapt to drought environment. The drought resistance of three P. lactiflora varieties was ‘Shala’> ‘Chunxiao’> ‘Sandianhong’.

Key words: Paeonia lactiflora, drought stress, leaf morphological traits, chlorophyll fluorescence, kinetic curve, comprehensive evaluation, principal component analysis