LIN Da,WANG Song-jie,XU Xia-ling,et al.Response of Net Photosynthetic Rate to LightIntensityand CO2Concentration of Koelreuteria paniculataLaxm.and Sapindus mukorossi Gaerth.[J].HEILONGJIANG AGRICULTURAL SCIENCES,2012,(10):89-93.
栾树和无患子净光合速率对光强和CO2浓度的响应
- Title:
- Response of Net Photosynthetic Rate to LightIntensityand CO2Concentration of Koelreuteria paniculataLaxm.and Sapindus mukorossi Gaerth.
- 文章编号:
- 1002-2767（2012）10-0089-05
- Keywords:
- Koelreuteria paniculata Laxm.; Sapindus mukorossi Gaerth.; light response curve; CO2 response curve
- 分类号:
- S792.99
- 文献标志码:
- A
- 摘要:
- 以栾树(Koelreuteria paniculata Laxm.)和无患子(Sapindus mukorossi Gaerth.)为研究对象，比较两者的净光合速率对光强和CO2浓度响应特性。结果表明：直角双曲线修正模型拟合两种植物的光响应曲线和CO2响应曲线的决定系数R2均在0.998 6以上，拟合效果良好；栾树和无患子的最大净光合速率(Pmax)分别为10.69和6.68 μmol·m-2·s-1，光饱和点(LSP)分别为1 526.62和1 439.22 μmol·m-2·s-1，光补偿点(LCP)分别为13.61和9.57 μmol·m-2·s-1，表明栾树的光合作用强于无患子，且两者对弱光有较强的适应能力，都能利用很高的光强；栽培实践中需考虑密度，防止过密导致生长速率下降；栾树和无患子的CO2饱和点(CSP)分别为1 438.41和1 242.06 μmol·m-2·s-1，CO2补偿点(CCP)分别为65.45和70.64 μmol?m-2?s-1，高CSP意味着在全球CO2浓度不断升高的背景下，两者均能很好地应对，栾树较无患子有更宽的CO2利用范围，适应能力更强。
- Abstract:
- The responses of net photosynthetic rate(Pn)to light intensity and CO2 concentration of Koelreuteria paniculata Laxm.and Sapindus mukorossi Gaerth.were studied.The results showed that the modified rectangular hyperbola model worked well in curve-fitting,the coefficients of determination of the fitting equation were all more than 0.998 6;The maximum net photosynthetic rate(Pmax)of K.paniculata Laxm.and S.mukorossi Gaerth.were 10.69 and 6.68 μmol·m-2·s-1 respectively,the light saturation point(LSP)of the two species were 1 526.62 and 1 439.22 μmol·m-2·s-1 respectively,and the light compensation point(LCP)of the two species were 13.61 and 9.57 μmol·m-2·s-1 respectively,those data indicated that the photosynthetic potential of K.paniculata Laxm.was stronger than S.mukorossi,and both of the two species could acclimate to low light condition perfectly and utilize high irradiation,in order to prevent from dropping of photosynthesis,the plant intensity must be taken into consideration in cultivation practices.The CO2 saturation point(CSP)of K.paniculata Laxm.and S.mukorossi Gaerth.were 1 438.41 and 1 242.06 μmol·m-2·s-1 respectively,the CO2 compensation point(CCP)of the two species were 65.45 and 70.64 μmol·m-2·s-1 respectively,high CSP meant that the two species could adjust to the continuous raise of global CO2 concentration,moreover,K.paniculata Laxm.had better adaptability than S.mukorossi Gaerth.to the change of CO2 concentration,for the former had wider range to use CO2.
参考文献/References:
[1]叶子飘,于强.光合作用光响应模型的比较[J].植物生态学报,2008，32(6):1356-1361. [2]苗中芹,张秀省,杨重军.不同处理方法对栾树种子发芽率的影响[J].北方园艺,2008(3):159-160. [3]谢必武,张凤龙.几种处理方法对无患子种子发芽的影响[J].种子,2007,26(5):74-75. [4]翟梅枝,郭景丽,王磊,等.栾树花黄酮类化合物的提取工艺研究[J].西北林学院学报,2010(2):136-139. [5]李锐,周燕,杨永成,等.无患子皂苷成分的串联质谱分析[J].高等学校化学学报,2006,27(1):52-54. [6]朱凡,田大伦,闫文德,等.栾树对土壤多环芳烃修复机制初探[J].西北林学院学报,2011,26(1):52-55. [7]叶子飘.光合作用对光和CO2响应模型的研究进展[J].植物生态学报,2010,34(6):727-740. [8]罗树伟,郭春会,张国庆,等.沙地植物长柄扁桃光合特性研究[J].西北农林科技大学学报:自然科学版,2010(1):125-132. [9]叶子飘,于强.冬小麦旗叶光合速率对光强度和CO2浓度的响应[J].扬州大学学报:农业与生命科学版,2008，29(3):33-37. [10]叶子飘,赵则海.遮光对三叶鬼针草光合作用和叶绿素含量的影响[J].生态学杂志,2009,28(1):19-22. [11]叶子飘,高峻.丹参羧化效率在其CO2补偿点附近的变化[J].西北农林科技大学学报:自然科学版,2008,36(5):160-164. [12]王圣杰,黄大庄,闫海霞,等.4种经验模型在藏川杨光响应研究中的适用性[J].北华大学学报:自然科学版,2011.12(2):208-212. [13]廖小锋,刘济明,张东凯,等.野生小蓬竹的光合光响应曲线及其模型拟合[J].中南林业科技大学学报,2012,32(3):124-128. [14]蔡志全,曹坤芳,郑丽.6种热带雨林木本植物幼苗光合诱导的研究[J].植物生态学报,2004,27(5):617-623. [15]王雁,马武昌.扶芳藤,紫藤等7种藤本植物光能利用特性及耐荫性比较研究[J].林业科学研究,2004,17(3):305-309. [16]王冉,何茜,李吉跃,等.中国12种珍稀树种光合生理特性[J].东北林业大学学报,2010,38(11):15-20. [17]夏江宝,张光灿,孙景宽,等.山杏叶片光合生理参数对土壤水分和光照强度的阈值效应[J].植物生态学报,2011,35(3):322-329. [18]时慧君,杜峰,张兴昌.毛乌素沙地几种主要植物的光合特性[J].西北林学院学报,2010,25(4):29-34. [19]王亚萍,王开运,张远彬,等.川西亚高山森林优势种对CO2浓度倍增的光合生理响应[J].生态环境,2008,17(4):1514-1517.
备注/Memo
基金项目： 2012年浙江省大学生科技创新活动计划(新苗人才计划)资助项目（2012R428010）；2011年台州学院资助项目(2011PY15)