大气CO_2浓度升高和干旱的交互作用对大豆光合作用的影响
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摘要
研究大气CO_2浓度升高和水分胁迫对大豆的影响,有助于了解在未来气候条件下,大豆生产的变化,提前采取必要的应对措施。试验利用开顶式气室开展高CO_2浓度(大气CO_2浓度增加200μmol/mol)和干旱条件下大豆光合生理指标变化的研究。结果表明,开花期,大气CO_2浓度升高后,大豆的净光合速率、水分利用率显著增加,干旱条件下增幅明显小于湿润条件下增幅;干旱使大豆叶片PSⅡ有效光量子效率(Fv'/Fm')、电子传递速率(ETR)、光化学淬灭系数(qP)和PSⅡ光化学有效量子产率(ΦPSⅡ)显著降低,非光化学淬灭系数(NPQ)显著增加;CO_2浓度升高对大豆叶绿素荧光参数影响不显著。未来大气CO_2浓度升高会提高开花期大豆净光合速率和叶片水分利用效率,但对大豆抗旱能力提升效果有限。
Studying the effects of elevated CO_2 concentration and water stress on soybeans will help to understand the changes of soybean production in future climatic conditions and take necessary measures in advance. In this experiment, we studied the effect of the high CO_2 concentration(the atmospheric CO_2 concentration increased by 200 μmol/mol) and drought stress on photosynthetic physiological indexes of soybean by the open-top gas chamber. The results showed that elevated CO_2 concentration increased the net photosynthetic rate and water use efficiency of soybean during anthesis stage, and the increase under drought condition was significantly less than that under wet conditions. Drought stress significant decreased intrinsic efficiency of PSⅡ(Fv'/Fm'), effective quantum yield of PSⅡ photochemistry(ΦPSⅡ), electron transport rate(ETR), photochemical quenching coefficient(qP), but significant increased nonphotochemical quenching(NPQ). Elevated CO_2 concentration had no significant effect on chlorophyll fluorescence parameters of soybean. Elevated atmospheric CO_2 concentration will increase the net photosynthetic rate and water use efficiency of soybean in the future, but no positive effect to soybean in flowering stage under drought stress.
Studying the effects of elevated CO_2 concentration and water stress on soybeans will help to understand the changes of soybean production in future climatic conditions and take necessary measures in advance. In this experiment, we studied the effect of the high CO_2 concentration(the atmospheric CO_2 concentration increased by 200 μmol/mol) and drought stress on photosynthetic physiological indexes of soybean by the open-top gas chamber. The results showed that elevated CO_2 concentration increased the net photosynthetic rate and water use efficiency of soybean during anthesis stage, and the increase under drought condition was significantly less than that under wet conditions. Drought stress significant decreased intrinsic efficiency of PSⅡ(Fv'/Fm'), effective quantum yield of PSⅡ photochemistry(ΦPSⅡ), electron transport rate(ETR), photochemical quenching coefficient(qP), but significant increased nonphotochemical quenching(NPQ). Elevated CO_2 concentration had no significant effect on chlorophyll fluorescence parameters of soybean. Elevated atmospheric CO_2 concentration will increase the net photosynthetic rate and water use efficiency of soybean in the future, but no positive effect to soybean in flowering stage under drought stress.
引文
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[10]袁嫚嫚,朱建国,刘钢,等.不同天气水稻光合日变化对大气CO2浓度和温度升高的响应:FACE研究[J].生态学报,2018,38(6):1897-1907.
[11]李宏林,徐当会,杜国祯.青藏高原高寒沼泽湿地在退化梯度上植物群落组成的改变对湿地水分状况的影响[J].植物生态学报,2012,36(5):403-410.
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[13]陈良华,赖娟.接种丛枝菌根真菌对受镉胁迫美洲黑杨雌、雄株光合生理的影响[J].植物生态学报,2017,41(4):480-488.
[14]刘超,胡正华,陈健,等.不同CO2浓度升高水平对水稻光合特性的影响[J].生态环境学报,2018,27(2):246-254.
[15]陈佳妮,林丽春,徐年军,等. CO2浓度对雨生红球藻生理生化指标的影响[J].生物技术通报,2018(1):239-246.
[16]王云贺,韩忠明,韩梅,等.遮荫处理对东北铁线莲生长发育和光合特性的影响[J].生态学报,2010,30(24):6762-6770.
[17]张仟雨,宗毓铮,董琦,等.大气CO2浓度升高对大豆光合生理的影响[J].山西农业科学,2016,44(11):1675-1679.
[18]李国龙,孙亚卿,邵世勤.甜菜幼苗叶片渗透调节系统及部分激素对干旱胁迫的响应[J].江苏农业科学,2018,46(7):80-84.
[19]胡超,万林,张利艳,等.独脚金内酯缓解油菜渍水胁迫的生理机制[J].中国油料作物学报,2017,39(4):467-475.
[20]邸少华,谢立勇,郝兴宇.大气CO2浓度升高对夏大豆叶片生理生化性状的影响[J].华北农学报,2012,27(2):165-169.
[21]AINSWORTH E A. What have we learned from 15 years of free-air CO2enrichment(FACE)? A meta-analytic review of the responses of photosynthesis,canopy properties and plant production to rising CO2[J]. New Phytologist,2005,165(2):351-371.
[2]杜乐山,刘海燕,翟晓朦,等. CO2浓度升高对不同秋眠型苜蓿叶片解剖结构的影响[J].草业科学,2018(7):1704-1712.
[3]陈敏玲,张兵伟,任婷婷,等.内蒙古半干旱草原土壤水分对降水格局变化的响应[J].植物生态学报,2016,40(7):658-668.
[4]沈永平,王国亚. IPCC第一工作组第五次评估报告对全球气候变化认知的最新科学要点[J].冰川冻土,2013,35(5):1068-1076.
[5]王贺正,张均,吴金芝,等.不同氮素水平对小麦旗叶生理特性和产量的影响[J].草业学报,2013,22(4):69-75.
[6]赵天宏,王美玉,张巍巍,等.大气CO2浓度升高对植物光合作用的影响[J].生态环境学报,2006,15(5):1096-1100.
[7]闫大明,邵彦宾.玉米高产攻关栽培技术总结[J].现代化农业,2011(1):25-26.
[8]王磊,张彤,丁圣彦.干旱和复水对大豆光合生理生态特性的影响[J].生态学报,2006,26(7):2073-2078.
[9]闫春娟,宋书宏,王文斌,等.不同降雨条件对不同耐旱型大豆根系的影响[J].大豆科学,2018,37(2):209-214.
[10]袁嫚嫚,朱建国,刘钢,等.不同天气水稻光合日变化对大气CO2浓度和温度升高的响应:FACE研究[J].生态学报,2018,38(6):1897-1907.
[11]李宏林,徐当会,杜国祯.青藏高原高寒沼泽湿地在退化梯度上植物群落组成的改变对湿地水分状况的影响[J].植物生态学报,2012,36(5):403-410.
[12] MATSUBARA S,KRAUSE G H. Lutein epoxide cycle,light harvesting and photoprotection in species of the tropical tree genus Inga[J]. Plant Cell&Environment,2008,31(4):548-561.
[13]陈良华,赖娟.接种丛枝菌根真菌对受镉胁迫美洲黑杨雌、雄株光合生理的影响[J].植物生态学报,2017,41(4):480-488.
[14]刘超,胡正华,陈健,等.不同CO2浓度升高水平对水稻光合特性的影响[J].生态环境学报,2018,27(2):246-254.
[15]陈佳妮,林丽春,徐年军,等. CO2浓度对雨生红球藻生理生化指标的影响[J].生物技术通报,2018(1):239-246.
[16]王云贺,韩忠明,韩梅,等.遮荫处理对东北铁线莲生长发育和光合特性的影响[J].生态学报,2010,30(24):6762-6770.
[17]张仟雨,宗毓铮,董琦,等.大气CO2浓度升高对大豆光合生理的影响[J].山西农业科学,2016,44(11):1675-1679.
[18]李国龙,孙亚卿,邵世勤.甜菜幼苗叶片渗透调节系统及部分激素对干旱胁迫的响应[J].江苏农业科学,2018,46(7):80-84.
[19]胡超,万林,张利艳,等.独脚金内酯缓解油菜渍水胁迫的生理机制[J].中国油料作物学报,2017,39(4):467-475.
[20]邸少华,谢立勇,郝兴宇.大气CO2浓度升高对夏大豆叶片生理生化性状的影响[J].华北农学报,2012,27(2):165-169.
[21]AINSWORTH E A. What have we learned from 15 years of free-air CO2enrichment(FACE)? A meta-analytic review of the responses of photosynthesis,canopy properties and plant production to rising CO2[J]. New Phytologist,2005,165(2):351-371.