不同光强下高锰对黄瓜光合作用特性的影响

摘要/Abstract

摘要： 采用营养液培养的方法,研究了不同光强下高锰对黄瓜植株生长、叶绿素含量、叶绿素荧光参数和光合作用的影响.结果表明,高锰处理抑制了黄瓜植株的生长,与弱光处理相比强光下抑制幅度更加显著.强光下,高锰处理显著降低叶绿素含量,但降低光强却增加其含量.强光下,高锰处理显著降低原初光能转换效率(F_v/F_m)、光合电子传递量子效率(ΦPSII)和光化学猝灭系数(qP);弱光下,高锰处理对F_v/F_m和qP无显著影响.高锰处理使净光合速率(P_n)和气孔导度(G_s)下降.尤其是在强光下下降幅度更大.高锰处理使细胞间CO₂浓度(C_i)在强光下升高,而在弱光下则下降.与C_i相反,高锰处理使气孔限制值(L_s)在强光下下降,而在弱光下上升.因此,强光下高锰胁迫使净光合速率下降可能是由非气孔限制引起的,而弱光下高锰处理使净光合速率下降可能是由气孔因子限制引起的.

关键词: 黄瓜, 光强, 高锰, 光合作用, 叶绿素荧光

Abstract: By a solution culture experiment,this paper studied the effects of excess Mn on the growth,chlorophyll content,chlorophyll fluorescence parameters and photosynthesis of cucumber under different light intensity.The results indicated that excess Mn inhibited plant growth,which was more obvious under high light intensity than under low light intensity.The primary maximum photochemical efficiency of PSII (F_v/F_m),quantum efficiency of non-cyclic electron transport of PSII (ΦPSII),and photochemical quenching (qP) were significantly decreased in excess Mn treatment under high light intensity,while no significant effects on F_v/F_m and qP were observed under low light intensity.Excess Mn,particularly under high light intensity,decreased net photosynthetic rate (P_n) and stomatal conductance (G_s).Excess Mn increased intracellular CO₂ (C_i) under high light intensity and decreased C_i under low light intensity,while stomatal limitation value (L_s) was just reverse to C_i.It could be concluded that the decrease of P_n in excess Mn treatment was not resulted from stomatal limitation under high light intensity,but was true under low light intensity.

Key words: Cucumber, Light intensity, Excess Mn, Photosynthesis, Chlorophyll fluorescence

中图分类号:

S642.2

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史庆华, 朱祝军, 应泉盛, 钱琼秋. 不同光强下高锰对黄瓜光合作用特性的影响[J]. 应用生态学报, 2005, 16(6): 1047-1050.

SHI Qinghua, ZHU Zhujun, YING Quansheng, QIAN Qiongqiu . Effects of excess Mn on photosynthesis characteristics in cucumber under different light intensity[J]. Chinese Journal of Applied Ecology, 2005, 16(6): 1047-1050.

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不同光强下高锰对黄瓜光合作用特性的影响

Effects of excess Mn on photosynthesis characteristics in cucumber under different light intensity

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[1]	郭葳, 王楠, 张凯悦, 宋沛沛, 马占强. Cu₂O纳米颗粒对小麦幼苗快速叶绿素荧光诱导动力学特征及相关基因的影响 [J]. 应用生态学报, 2024, 35(3): 721-730.
[2]	甘菲菲, 招礼军, 霍灿灿, 王晟. 光照和水分对四季米仔兰幼苗生长的影响 [J]. 应用生态学报, 2024, 35(2): 439-446.
[3]	王复标, 杨小龙, 康华靖, 叶子飘. 不同环境条件下光合作用对光响应模型的研究进展 [J]. 应用生态学报, 2023, 34(7): 1995-2005.
[4]	张慧玉, 岳丹斐, 潘晓娇, 郝露露, 刘伟成, 郑春芳. 5-羟色胺在红树植物秋茄幼苗抗寒中的作用 [J]. 应用生态学报, 2023, 34(5): 1263-1271.
[5]	张晓伟, 杨显贺, 车豪杰, 秦竞, 毕焕改, 艾希珍. 腐熟玉米秸秆对设施土壤环境及黄瓜产量和品质的影响 [J]. 应用生态学报, 2023, 34(5): 1290-1296.
[6]	张鸿志, 张文娥, 樊卫国, 欧阳章维, 蔡虎, 郝振坤, 王瑞璞, 潘学军. 核桃/刺梨复合种植对刺梨生长、果实产量、品质和土壤性质的影响 [J]. 应用生态学报, 2023, 34(3): 699-707.
[7]	赵雷, 靳海笛, 曹晓云, 邓文辉, 杜灵娟. 六个东方铁筷子品种对干旱胁迫的生理响应及抗旱性评价 [J]. 应用生态学报, 2023, 34(10): 2644-2654.
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[9]	于鑫磊, 苑俊风, 刘冬伟, 陈金辉, 闫巧玲. 野外土壤增温对胡桃楸幼苗生长和生理特性的影响 [J]. 应用生态学报, 2023, 34(1): 11-17.
[10]	朱静, 金星, 何中声, 肖倩茹, 陈佳嘉, 邢聪, 刘金福, 沈彩霞. 格氏栲幼苗叶绿素荧光和非结构性碳水化合物积累对种子散布位置的响应 [J]. 应用生态学报, 2022, 33(8): 2129-2138.
[11]	吴鹏, 吕剑, 郁继华, 刘娜, 李金武, 金莉, 金宁, 王舒亚. 褪黑素对盐碱复合胁迫下黄瓜幼苗光合特性和渗透调节物质含量的影响 [J]. 应用生态学报, 2022, 33(7): 1901-1910.
[12]	刘彩娟, 吕春雨, 艾希珍, 毕焕改. 黄腐酸对干旱胁迫下黄瓜光合特性及产量和品质的影响 [J]. 应用生态学报, 2022, 33(5): 1300-1310.
[13]	刘梅朔, 王传宽, 全先奎. 兴安落叶松叶光合与氮代谢对环境变化响应的转录组分析 [J]. 应用生态学报, 2022, 33(4): 957-962.
[14]	王爽, 郑世伟, 李笑, 张一迪, 吴桐, 富宏丹, 孙周平. 日光温室黄瓜长期连作自毒物质累积与土壤肥力因子的关系 [J]. 应用生态学报, 2022, 33(3): 784-792.
[15]	曹银轩, 黄卓, 徐喜娟, 陈上, 王钊, 冯浩, 于强, 何建强. 黄土高原植被日光诱导叶绿素荧光对气象干旱的响应 [J]. 应用生态学报, 2022, 33(2): 457-466.