[1]许耀文,严灵君,岳远灏,等.15个椴属种(品种)对高温胁迫的光合生理响应及耐热性评价[J].江苏农业学报,2025,(08):1628-1637.[doi:doi:10.3969/j.issn.1000-4440.2025.08.019]
　XU Yaowen,YAN Lingjun,YUE Yuanhao,et al.Photosynthetic physiological responses and heat resistance evaluation of 15 Tilia species (cultivars) to high-temperature stress[J].,2025,(08):1628-1637.[doi:doi:10.3969/j.issn.1000-4440.2025.08.019]
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15个椴属种(品种)对高温胁迫的光合生理响应及耐热性评价()

江苏农业学报[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2025年08期
页码:
1628-1637
栏目:
园艺
出版日期:
2025-08-31

文章信息/Info

Title:
Photosynthetic physiological responses and heat resistance evaluation of 15 Tilia species (cultivars) to high-temperature stress
作者:
许耀文; 严灵君; 岳远灏; 王欢利; 黄犀; 汤诗杰
(江苏省中国科学院植物研究所<南京中山植物园>/江苏省植物资源保护与利用重点实验室,江苏南京210014)
Author(s):
XU Yaowen; YAN Lingjun; YUE Yuanhao; WANG Huanli; HUANG Xi; TANG Shijie
(Institute of Botany, Jiangsu Province and Chinese Academy of Sciences (Nanjing Botanical Garden Mem. Sun Yat-Sen）/Jiangsu Key Laboratory for Conservation and Utilization of Plant Resources, Nanjing 210014, China)
关键词:
椴属; 叶绿素荧光参数; 耐热性评价
Keywords:
Tilia; chlorophyll fluorescence parameters; heat resistance evaluation
分类号:
S792.36
DOI:
doi:10.3969/j.issn.1000-4440.2025.08.019
文献标志码:
A
摘要:
本研究以15个椴属种(品种)为研究对象,测定了其在自然高温胁迫下的光合参数,综合评估了不同种（品种）的耐热性。结果表明,8月高温胁迫下,糯米椴和南京椴叶片蒸腾速率(Tr)和气孔导度(Gs)显著高于6月常温条件下叶片Tr和Gs(P＜0.05),叶片净光合速率(Pn)与6月常温条件下相比无显著差异(P＞0.05)。表明这两种椴属种的蒸腾散热能力较强,高温胁迫对其光合作用的抑制作用较小。高温胁迫导致大部分椴属种(品种)叶片水分利用效率(WUE)、光能利用效率(LUE)和二氧化碳利用效率(CUE)显著下降(P＜0.05),表明高温已造成其叶片生物膜结构损伤和叶肉细胞活性降低。利用主成分分析将11个光合指标耐热系数降维为3个独立主成分,并通过隶属函数和权重计算得到综合评价值(D值)。根据D值,15个椴属种(品种)耐热性从高到低依次为糯米椴>南京椴>欧洲大叶椴窄冠>欧洲椴克里米亚>美洲椴哨兵>欧洲小叶椴牧场>银毛椴布拉班特>紫椴>欧洲大叶椴冬枝红>欧洲小叶椴绿塔>欧洲小叶椴新乐>欧洲大叶椴泽栽特>银毛椴斯特林>欧洲大叶椴嘉实黄金>美洲椴雷蒙德。本研究结果为椴属植物的耐热机制解析和引种栽培提供了理论依据。
Abstract:
In this study, 15 species (cultivars) of the genus Tilia were used as research objects, and their photosynthetic parameters under natural high-temperature stress were measured to comprehensively evaluate the heat resistance of different cultivars. The results showed that under high-temperature stress in August, the leaf transpiration rate (Tr) and stomatal conductance (Gs) of Tilia henryana and Tilia miqueliana Maxim. were significantly higher than those under normal temperature conditions in June (P＜0.05), while there was no significant difference in the net photosynthetic rate (Pn) of leaves compared with that under normal temperature conditions in June (P＞0.05). These findings indicated that these two Tilia species exhibited strong transpiration and heat dissipation capacity, and high-temperature stress had a relatively small inhibitory effect on their photosynthesis. High-temperature stress caused significant reductions in leaf water use efficiency (WUE), light use efficiency(LUE) and CO2 utilization efficiency (CUE)of most Tilia species (cultivars) (P＜0.05), indicating that elevated temperatures caused damage to the leaf biomembrane structure and reduced the activity of mesophyll cells. The heat resistance coefficients of 11 photosynthetic indexes were subjected to principal component analysis for dimensionality reduction to three independent principal components, and the comprehensive evaluation value (D value) was obtained through membership function and weight calculation. According to the D value, the heat resistance of the 15 Tilia species (cultivars) from high to low was as follows: Tilia henryana > Tilia miqueliana Maxim. > Tilia platyphyllos Fastigiata > Tilia europaea Euchlora > Tilia americana McK Sentry > Tilia cordata Rancho > Tilia tomentosa Brabant > Tilia amurensis > Tilia platyphyllos Rubta > Tilia cordata Greenspire > Tilia cordata Shamrock > Tilia platyphyllos Zelzate > Tilia tomentosa Sterling > Tilia cordata×mongolica Harvest Gold > Tilia americana Redmond. The results of this study provide a theoretical basis for the analysis of heat resistance mechanisms and introduction and cultivation of Tilia plants.

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备注/Memo

备注/Memo:
收稿日期：2024-12-31基金项目：江苏省林业发展专项基金项目作者简介：许耀文(1999-),男,甘肃白银人,硕士研究生,研究方向为椴属品种选育。(E-mail)1024349241@qq.com通讯作者：汤诗杰,(E-mail)tangshijie69@aliyun.com
更新日期/Last Update: 2025-09-23