马大杂交相思低温生理响应及耐寒性评价

doi:10.16088/j.issn.1001-6600.2025083103

广西师范大学学报（自然科学版） ›› 2026, Vol. 44 ›› Issue (4): 246-256.doi: 10.16088/j.issn.1001-6600.2025083103

• 农业科学 • 上一篇

马大杂交相思低温生理响应及耐寒性评价

许祖元^1,2, 陈立³, 杨宝婷^1,2, 冯一倬^1,2, 曹光球^1,2, 曹世江^1,2*

1.福建农林大学林学院, 福建福州 350002;
2.林木逆境生理生态及分子生物福建省高校重点实验室(福建农林大学),福建福州 350002;
3.广西壮族自治区国有高峰林场, 广西南宁 530001

收稿日期:2025-08-31 修回日期:2025-10-28 出版日期:2026-07-05 发布日期:2026-07-01
通讯作者: 曹世江(1984—),男,林梅河口人,福建农林大学副教授,博士。E-mail: csjiang1123@126.com
基金资助:
福建省科技攻关计划(ZMGG-0810)

Physiological responses and cold tolerance evaluation of Acacia mangium × A. auriculiformis seedlings

Xu Zuyuan^1,2, Chen Li³, Yang Baoting^1,2, Feng Yizhuo^1,2, Cao Guangqiu^1,2, Cao Shijiang1,2*

1. College of Forestry, Fujian Agriculture and Forestry University, Fuzhou Fujian 350002, China;
2. Fujian Provincial Key Laboratory of Physiology, Ecology and Molecular Biology of Forest Stress (Fujian Agriculture and Forestry University), Fuzhou Fujian 350002, China;
3. Guangxi State-owned Gaofeng Forest Farm, Nanning Guangxi 530001, China

Received:2025-08-31 Revised:2025-10-28 Online:2026-07-05 Published:2026-07-01

摘要/Abstract

摘要： 本文旨在探究马占相思Acacia mangium、大叶相思Acacia auriculiformis及其杂交无性系(8号、9号、19号) 1年生幼苗在低温胁迫下的生理响应。采用随机区组试验设计方案,设置25(对照组)、15、10、5、0 ℃共5个温度处理,每隔3 d进行1次取样并测定相关生理指标。结果表明,低温胁迫下,供试相思树种叶绿素含量均显著下降,且胁迫时间越长含量越低;丙二醛含量整体呈上升趋势,过氧化物酶、过氧化氢酶活性及可溶性蛋白含量均呈先升高后降低的变化趋势。经综合评价,马大杂交相思无性系8号具有较强的低温适应能力,无性系19号对低温胁迫较为敏感。研究结果为揭示马大杂交相思的低温适应机制提供了科学依据,对该树种耐寒品种的培育及栽培管理措施的优化均具有重要意义。

关键词: 马大杂交相思, 低温胁迫, 生理响应, 耐寒性评价

Abstract: This study aimed toprobe into the physiological responses of one-year-old seedlings of Acacia mangium, Acacia auriculiformis, and their hybrid clones (No. 8, No. 9, and No. 19) under low-temperature stress. A randomized block design was adopted, with five temperature treatments (25 ℃ as the control, 15, 10, 5, and 0 ℃); samples were taken and physiological indiceswere measured every 3 days. The results showed that under low-temperature stress the chlorophyll content of all Acacia materials declined significantly, and the longer the stress lasted, the lower the chlorophyll level became; malondialdehyde content rose overall, whereas peroxidase and catalase activities first increased and then decreased, and soluble-protein content likewise followed a trend of initial increase followed by decline. Comprehensive evaluation revealed that clone No. 8 of the Acacia mangium × A. auriculiformis hybrid possesses strong low-temperature adaptability, whereas clone No. 19 is markedly sensitive to low-temperature stress. This study provides a scientific basis for elucidating the low-temperature adaptation mechanisms of Acacia mangium × A. auriculiformis and is of great significance for breeding cold-tolerant varieties and optimizing cultivation management practices.

Key words: Acacia mangium×Acacia auriculiformis, low-temperature stress, physiological response, cold-resistance evaluation

中图分类号: S722.36

许祖元, 陈立, 杨宝婷, 冯一倬, 曹光球, 曹世江. 马大杂交相思低温生理响应及耐寒性评价[J]. 广西师范大学学报（自然科学版）, 2026, 44(4): 246-256.

Xu Zuyuan, Chen Li, Yang Baoting, Feng Yizhuo, Cao Guangqiu, Cao Shijiang1,2*. Physiological responses and cold tolerance evaluation of Acacia mangium × A. auriculiformis seedlings[J]. Journal of Guangxi Normal University(Natural Science Edition), 2026, 44(4): 246-256.

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马大杂交相思低温生理响应及耐寒性评价

Physiological responses and cold tolerance evaluation of Acacia mangium × A. auriculiformis seedlings

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