[1]王彦睿,卢云泽,石维,等.CO2浓度和温度升高对冬小麦气孔特征及气体交换过程的影响[J].江苏农业科学,2025,53(14):122-133.
 Wang Yanrui,et al.Effects of elevated CO2 concentration and temperature on leaf stomatal traits and gas exchange of winter wheat[J].Jiangsu Agricultural Sciences,2025,53(14):122-133.
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CO2浓度和温度升高对冬小麦气孔特征及气体交换过程的影响()

《江苏农业科学》[ISSN:1002-1302/CN:32-1214/S]

卷:
第53卷
期数:
2025年第14期
页码:
122-133
栏目:
遗传育种与耕作栽培
出版日期:
2025-07-20

文章信息/Info

Title:
Effects of elevated CO2 concentration and temperature on leaf stomatal traits and gas exchange of winter wheat
作者:
王彦睿1卢云泽2石维1田银帅2刘亮1马超1郑云普1李菲1
1.河北工程大学水利水电学院,河北邯郸 056038; 2.河北工程大学园林与生态工程学院,河北邯郸 056038
Author(s):
Wang Yanruiet al
关键词:
冬小麦CO2浓度升高增温温度适应性温度敏感性
Keywords:
-
分类号:
S512.1+10.1
DOI:
-
文献标志码:
A
摘要:
为深入探讨大气CO2浓度和温度升高对冬小麦气孔特征和气体交换过程的影响,利用6台可以精准控制CO2浓度和温度的大型环境生长箱,设置不同CO2浓度(400、800 μmol/mol)和温度(20 ℃/15 ℃、25 ℃/20 ℃、30 ℃/25 ℃),从气孔特征变化的角度揭示CO2浓度升高对冬小麦光合及呼吸作用增温适应性的影响机制。研究结果显示,(1)增温显著增加了冬小麦叶片近轴面的气孔密度(P<0.05),但远轴面气孔密度呈先降后增趋势。CO2浓度升高增加了 20 ℃/15 ℃ 和25 ℃/20 ℃下的气孔密度,却对30 ℃/25 ℃下的气孔密度无显著影响。(2)增温使气孔长度和气孔周长显著降低(P<0.05),但使气孔宽度显著增加(P<0.05),且气孔面积与气孔面积指数均随温度升高呈先降后增趋势。CO2浓度升高增加了气孔长度和气孔周长(P<0.05),但对气孔宽度、气孔面积、气孔面积指数和气孔形状指数的影响存在差异。(3)增温使CO2浓度升高下的气孔空间分布格局规则程度降低,且远轴面比近轴面的气孔分布空间格局更规则。(4)增温导致水分利用效率极显著降低(P<0.001),但CO2浓度升高缓解了因增温导致的负效应,并且净光合速率是影响水分利用效率变化的主要因素。(5)增温没有使冬小麦的光合作用产生适应性,但CO2浓度升高可以提高冬小麦光合作用的最适温度。同时,增温还导致冬小麦的呼吸作用产生了增温适应性,且在大气CO2浓度下的适应能力强于CO2浓度升高条件下的适应能力。上述研究结果表明,大气CO2浓度和温度升高可以通过调控冬小麦气孔形态和分布特征改变光合作用及呼吸作用的温度适应性。
Abstract:
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备注/Memo

备注/Memo:
收稿日期:2024-07-08
基金项目:国家自然科学基金(编号:32071608);河北省科技计划(编号:22326303D);河北省自然科学基金(编号:22023402086、E2024402128、D20244202015)。
作者简介:王彦睿(1998—),男,安徽滁州人,硕士研究生,主要从事气候变化背景下农作物生理生态相关研究。E-mail:wangyanrui2112@163.com。
通信作者:李菲,博士,讲师,主要从事农业水土工程相关研究。E-mail:lifei19931027@163.com。
更新日期/Last Update: 2025-07-20