彩叶景观新品种杨树‘红霞杨’的光合能力研究
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摘要
为了探索‘红霞杨’的光合能力,利用Li-6400便携式光合测定仪,测定了‘红霞杨’的光合指标,绘制了光响应曲线图和光合指标日变化图,对光响应曲线用直角双曲线修正模型进行拟合和计算,并与‘四季杨’和‘全红杨’对比。结果表明:从曲线分布位置、光补偿点(LCP)、光饱和点(LSP)、表观量子效率(AQY)、最大净光合速率(Pnmax)以及同光强下的净光合速率(Pn)比较来看‘,红霞杨’的光合能力比较差,没有与其相近的同类树木‘全红杨’和‘四季杨’强‘;红霞杨’的净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)和胞间CO2浓度(Ci)等光合指标日变化曲线图也比较平稳,没有明显的峰值,对光的应激反应比较弱,自身调节能力差。
The paper aims to explore the photosynthetic capacity of Populus euramericana cv.'Hongxia'. The author measured the photosynthetic indexes of Populus euramericana cv.'Hongxia'by Li-6400 portable photosynthetic meter, plotted the light response curve and the diurnal variation map of photosynthetic index,and fitted and calculated the light response curve by modified rectangular hyperbola, compared with the Populus spp and Populus euramericana cv.'Quanhong'. The results showed that: from the perspectives of the line distribution position, the light compensation point(LCP), light saturation point(LSP), apparent quantum yield(AQY), maximum net photosynthetic rate(Pnmax) and net photosynthesis rates(Pn) under the same light intensity, the photosynthetic capacity of Populus euramericana cv.'Hongxia'was poor, and it was not as good as that of the similar trees Populus spp and Populus euramericana cv.'Quanhong'; the diurnal variation curves of the net photosynthetic rate(Pn), transpiration rate(Tr), stomatal conductivity(Gs) and stomatal CO2 concentration(Ci) were relatively stable with no obvious peak value, and the response to light stress was weak and the self-regulation ability was poor.
The paper aims to explore the photosynthetic capacity of Populus euramericana cv.'Hongxia'. The author measured the photosynthetic indexes of Populus euramericana cv.'Hongxia'by Li-6400 portable photosynthetic meter, plotted the light response curve and the diurnal variation map of photosynthetic index,and fitted and calculated the light response curve by modified rectangular hyperbola, compared with the Populus spp and Populus euramericana cv.'Quanhong'. The results showed that: from the perspectives of the line distribution position, the light compensation point(LCP), light saturation point(LSP), apparent quantum yield(AQY), maximum net photosynthetic rate(Pnmax) and net photosynthesis rates(Pn) under the same light intensity, the photosynthetic capacity of Populus euramericana cv.'Hongxia'was poor, and it was not as good as that of the similar trees Populus spp and Populus euramericana cv.'Quanhong'; the diurnal variation curves of the net photosynthetic rate(Pn), transpiration rate(Tr), stomatal conductivity(Gs) and stomatal CO2 concentration(Ci) were relatively stable with no obvious peak value, and the response to light stress was weak and the self-regulation ability was poor.
引文
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[8]秦玉芝,邢铮,邹剑锋,等.持续弱光胁迫对马铃薯苗期生长和光合特性的影响[J].中国农业科学,2014,47(3):537-545.
[9]刘柿良,马明东,潘远智,等.不同光环境对桤木幼苗生长和光合特性的影响[J].应用生态学报,2013,24(2):351-358.
[10]张治安,杨福,陈展宇,等.菰叶片净光合速率日变化及其与环境因子的相互关系[J].中国农业科学,2006,39(3):502-509.
[11]韩永伟,拓学森,高馨婷,等.阿拉善荒漠草原梭梭与白刺光合特征比较研究[J].草地学报,2010,18(3):314-319.
[12]王笑影,李丽光,谢艳兵,等.植被-大气相互作用中的气孔导度及其尺度转换[J].生态学杂志,2008,27(3):454-459.
[13]许大全.光合作用气孔限制分析中的一些问题[J].植物生理学通讯,1997,33(4):241-244.
[14]胡文海,胡雪华,曾建军,等.干旱胁迫对2个辣椒品种光合特性的影响[J].华中农业大学学报,2008,27(6):776-781.
[15]叶子飘,康华靖,陶月良,等.不同模型对黄山栾树快速光曲线拟合效果的比较[J].生态学杂志,2011,30(8):1662-1667.
[16]刘弘,马杰,李保印.三种彩叶植物的光合特性日变化研究[J].河南职业技术师范学院学报,2004,32(2):33-35.
[17]李新国,许大全,孟庆伟.银杏叶片光合作用对强光的响应[J].植物生理学报,1998,24(4):354-360.
[18]杨小飞,郭房庆.高温逆境下植物叶片衰老机理研究进展[J].植物生理学报,2014,50(9):1285-1292.
[19]赵顺,黄秋娴,李玉灵,等.遮荫处理对臭柏幼苗光合特性的影响[J].生态学报,2014,34(8):1994-2002.
[20]王振兴,朱锦懋,王健,等.闽楠幼树光合特性及生物量分配对光环境的响应[J].生态学报,2012,32(12):3841-3848.
[2]朱延林,王新建,程相军,等.中华红叶杨生物学及光合特性的研究[J].上海农业学报,2005,21(4):9-12.
[3]王泽瑞.彩叶树种的光合特性和呈色机理研究进展[J].安徽农业科学,2011,39(22):13495-13497.
[4]叶子飘,于强.植物气孔导度的机理模型[J].植物生态学报,2009,33(4):772-782.
[5]叶子飘,高峻.光响应和CO2响应新模型在丹参中的应用[J].西北农林科技大学学报:自然科学版,2009,37(1):129-134.
[6]叶子飘,高峻.低光强时丹参叶片的光合速率与光强的关系[J].井冈山学院学报,2007,28(8):47-50.
[7]韩刚,赵忠.不同土壤水分下4种沙生灌木的光合光响应特性[J].生态学报,2010,30(15):4019-4026.
[8]秦玉芝,邢铮,邹剑锋,等.持续弱光胁迫对马铃薯苗期生长和光合特性的影响[J].中国农业科学,2014,47(3):537-545.
[9]刘柿良,马明东,潘远智,等.不同光环境对桤木幼苗生长和光合特性的影响[J].应用生态学报,2013,24(2):351-358.
[10]张治安,杨福,陈展宇,等.菰叶片净光合速率日变化及其与环境因子的相互关系[J].中国农业科学,2006,39(3):502-509.
[11]韩永伟,拓学森,高馨婷,等.阿拉善荒漠草原梭梭与白刺光合特征比较研究[J].草地学报,2010,18(3):314-319.
[12]王笑影,李丽光,谢艳兵,等.植被-大气相互作用中的气孔导度及其尺度转换[J].生态学杂志,2008,27(3):454-459.
[13]许大全.光合作用气孔限制分析中的一些问题[J].植物生理学通讯,1997,33(4):241-244.
[14]胡文海,胡雪华,曾建军,等.干旱胁迫对2个辣椒品种光合特性的影响[J].华中农业大学学报,2008,27(6):776-781.
[15]叶子飘,康华靖,陶月良,等.不同模型对黄山栾树快速光曲线拟合效果的比较[J].生态学杂志,2011,30(8):1662-1667.
[16]刘弘,马杰,李保印.三种彩叶植物的光合特性日变化研究[J].河南职业技术师范学院学报,2004,32(2):33-35.
[17]李新国,许大全,孟庆伟.银杏叶片光合作用对强光的响应[J].植物生理学报,1998,24(4):354-360.
[18]杨小飞,郭房庆.高温逆境下植物叶片衰老机理研究进展[J].植物生理学报,2014,50(9):1285-1292.
[19]赵顺,黄秋娴,李玉灵,等.遮荫处理对臭柏幼苗光合特性的影响[J].生态学报,2014,34(8):1994-2002.
[20]王振兴,朱锦懋,王健,等.闽楠幼树光合特性及生物量分配对光环境的响应[J].生态学报,2012,32(12):3841-3848.