氮素胁迫对玉米光合及叶绿素荧光参数的影响

蒋达波,宗秀虹,李帮秀,宗学凤,王三根

doi:10.13718/j.cnki.xsxb.2015.01.023

西南师范大学学报(自然科学版)

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氮素胁迫对玉米光合及叶绿素荧光参数的影响

蒋达波,宗秀虹,李帮秀,宗学凤,王三根. 氮素胁迫对玉米光合及叶绿素荧光参数的影响[J]. 西南师范大学学报(自然科学版), 2015, 40(1). doi: 10.13718/j.cnki.xsxb.2015.01.023

引用本文:

JIANG Da-bo,ZONG Xiu-hong,LI Bang-xiu,ZONG Xue-feng,WANG San-gen. Effects of nitrogen stress on photosynthesis and chlorophyll fluorescence of maize[J]. Journal of Southwest China Normal University(Natural Science Edition), 2015, 40(1). doi: 10.13718/j.cnki.xsxb.2015.01.023

Citation:

JIANG Da-bo,ZONG Xiu-hong,LI Bang-xiu,ZONG Xue-feng,WANG San-gen. Effects of nitrogen stress on photosynthesis and chlorophyll fluorescence of maize[J]. Journal of Southwest China Normal University(Natural Science Edition), 2015, 40(1). doi: 10.13718/j.cnki.xsxb.2015.01.023

氮素胁迫对玉米光合及叶绿素荧光参数的影响

蒋达波,宗秀虹,李帮秀,宗学凤,王三根

西南大学农学与生物科技学院/南方山地农业教育部工程研究中心,重庆,400716 西南大学生命科学学院,重庆,400715

Effects of nitrogen stress on photosynthesis and chlorophyll fluorescence of maize

JIANG Da-bo,ZONG Xiu-hong,LI Bang-xiu,ZONG Xue-feng,WANG San-gen

摘要: 以重庆市对氮素利用率不同的3个玉米品种为材料，研究了氮素胁迫对3个玉米品种光合及叶绿素荧光参数的影响。结果表明，不同氮素胁迫对玉米幼苗叶片的光合参数和叶绿素荧光参数有显著影响。随着氮素胁迫的加剧，玉米叶片的光合色素质量分数降低，光合能力减弱，表现为净光合速率、蒸腾速率、气孔导度、光饱和点、光补偿点、实际光化学量子产量、最大光化学量子产量、光化学淬灭系数逐渐降低，而非光化学淬灭逐渐增加。与正常氮素水平比较，轻度氮素胁迫下各玉米品种幼苗相关指标的降低或增加幅度不同，其中雅玉2号的净光合速率、蒸腾速率、气孔导度 Pn 、实际光化学量子产量、最大光化学量子产量、光化学淬灭系数的降低幅度和非光化学淬灭的增加幅度均较小，农大108居中，成单14号的变幅最大。
- 玉米 /
- 氮素胁迫 /
- 净光合速率 /
- 叶绿素荧光参数
Abstract: The photosynthesis and chlorophyll fluorescence were characterized by using three maize as ma-terials .The results showed that the significant effect of different nitrogen supply on chlorophyll content 、photosynthetic rate and chlorophyll fluorescence in maize .With the decrease of nitrogen concentration , chlorophyll content、photosynthetic rat ( Pn )、Gs 、Tr 、light compensation point、light compensation point、maximal photochemical quantum yield of PS Ⅱ(Fv/Fm )、actual quantum yield of PS Ⅱ (ΦPSⅡ )、photochemi-cal quenching co-efficient(qP ) was decreased ,and non-photochemical quenching(qN ) was increased .But in comparison with suitable nitrogen supply ,the breadth of decrease or increase in every variety was differ-ent ,the decrease of chlorophyll content , Pn ,ΦPSⅡ , Fv/Fm ,qN and the increase of qN in the cultivar Yayu 2 were both less ,the change of all parameters in Chengdan 14 was most ,the change in Nongda108was in the middle .
- maize，nitrogen，photosynthetic rate，chlorophyll fluorescence /

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氮素胁迫对玉米光合及叶绿素荧光参数的影响

蒋达波,宗秀虹,李帮秀,宗学凤,王三根

西南大学农学与生物科技学院/南方山地农业教育部工程研究中心,重庆,400716 西南大学生命科学学院,重庆,400715

关键词:

摘要: 以重庆市对氮素利用率不同的3个玉米品种为材料，研究了氮素胁迫对3个玉米品种光合及叶绿素荧光参数的影响。结果表明，不同氮素胁迫对玉米幼苗叶片的光合参数和叶绿素荧光参数有显著影响。随着氮素胁迫的加剧，玉米叶片的光合色素质量分数降低，光合能力减弱，表现为净光合速率、蒸腾速率、气孔导度、光饱和点、光补偿点、实际光化学量子产量、最大光化学量子产量、光化学淬灭系数逐渐降低，而非光化学淬灭逐渐增加。与正常氮素水平比较，轻度氮素胁迫下各玉米品种幼苗相关指标的降低或增加幅度不同，其中雅玉2号的净光合速率、蒸腾速率、气孔导度 Pn 、实际光化学量子产量、最大光化学量子产量、光化学淬灭系数的降低幅度和非光化学淬灭的增加幅度均较小，农大108居中，成单14号的变幅最大。

English Abstract

Effects of nitrogen stress on photosynthesis and chlorophyll fluorescence of maize

西南大学农学与生物科技学院/南方山地农业教育部工程研究中心,重庆,400716 西南大学生命科学学院,重庆,400715

Keywords:

Abstract: The photosynthesis and chlorophyll fluorescence were characterized by using three maize as ma-terials .The results showed that the significant effect of different nitrogen supply on chlorophyll content 、photosynthetic rate and chlorophyll fluorescence in maize .With the decrease of nitrogen concentration , chlorophyll content、photosynthetic rat ( Pn )、Gs 、Tr 、light compensation point、light compensation point、maximal photochemical quantum yield of PS Ⅱ(Fv/Fm )、actual quantum yield of PS Ⅱ (ΦPSⅡ )、photochemi-cal quenching co-efficient(qP ) was decreased ,and non-photochemical quenching(qN ) was increased .But in comparison with suitable nitrogen supply ,the breadth of decrease or increase in every variety was differ-ent ,the decrease of chlorophyll content , Pn ,ΦPSⅡ , Fv/Fm ,qN and the increase of qN in the cultivar Yayu 2 were both less ,the change of all parameters in Chengdan 14 was most ,the change in Nongda108was in the middle .