锥连栎不同叶龄叶片光合特征研究
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摘要
以我国西南地区特有种锥连栎为试材,使用LI-6400便携式光合作用测定系统对锥连栎当年生叶和一年生叶的光合参数日进程以及光响应曲线进行测定。结果表明,(1)全光照环境下,锥连栎当年生叶和一年生叶的净光合速率(Pn)日变化呈"M"形双峰曲线,且当年生叶光合作用能力明显强于一年生叶,第1个峰值出现在1000,第2个峰值出现在1400,中午有明显的"午休"现象;气孔导度(Gs)、蒸腾速率(Tr)的日变化趋势与Pn较为一致;胞间CO_2浓度(Ci)日变化与Pn日变化趋势大致相反,呈"W"形,中午Ci增加,表明净光合速率午间降低主要是受非气孔限制因素影响。(2)相关性分析显示,当年生叶Pn与Tr具有极显著正相关关系(P<0.01),一年生叶Pn与Gs、Tr具有极显著正相关关系(P<0.01)。(3)锥连栎当年生叶的最大净光合速率(Pnmax)、光饱和点(LSP)都较高且均高于一年生叶,表明当年生叶对强光有更高的适应能力,而当年生叶和一年生叶的光补偿点(LCP)都较低且表现为一年生叶的LCP低于当年生叶,一年生叶表现出更强的耐荫性,更接近于阴生植物的特性。
The seedlings of Qercus franchetii which is endemic to southwest China,were cultivated at full light for two years.The diurnal variations of photosynthesis and parameters of current-year leaves and one-year old leaves of Q.franchetii were determined.The results indicated that:(1)Under the full light level,the diurnal variations of net photosynthetic rate(Pn) of current-year leaves and one-year old leaves of Q.franchetii showed an "M"-shaped double-peak curve,and the Pn of current-year leaves was significantly higher than that of one-year old leaves.The first and second peaks occurred at 10:00 and 14:00 respectively.There was a significant "midday depression" of photosynthesis phenomenon at noon.The diurnal variation of stomatal conductance(Gs)and transpiration rate(Tr)were both similar with Pn;The diurnal variation of intercellular CO_2 concentration(Ci) was roughly opposite to the diurnal variation trend of Pn,and showed a "W" shape.The increasing of Ci at noon indicated that the midday decreasing of net photosynthetic rate was mainly affected by non-stomatal limiting factors.(2)Correlation analysis showed that Pn had a significant positive correlation with Tr at P<0.01 level of current-year leaves,and Pn had a significant positive correlation with Gs and Tr at P<0.01 level of one-year old leaves.(3)The maximum net photosynthetic rate(Pnmax) and the light saturation points(LSP) of current-year leaves of the Q.franchetii were both higher than those of one-year old leaves.It indicated that the current-year leaves adapted well to high light.The light compensation points(LCP) of current-year leaves and one-year old leaves were low,while LCP of one-year old leaves was lower than that of current-year leaves.The one-year old leaves showed stronger shade-tolerance and were similar to the characteristics of shade plants.
The seedlings of Qercus franchetii which is endemic to southwest China,were cultivated at full light for two years.The diurnal variations of photosynthesis and parameters of current-year leaves and one-year old leaves of Q.franchetii were determined.The results indicated that:(1)Under the full light level,the diurnal variations of net photosynthetic rate(Pn) of current-year leaves and one-year old leaves of Q.franchetii showed an "M"-shaped double-peak curve,and the Pn of current-year leaves was significantly higher than that of one-year old leaves.The first and second peaks occurred at 10:00 and 14:00 respectively.There was a significant "midday depression" of photosynthesis phenomenon at noon.The diurnal variation of stomatal conductance(Gs)and transpiration rate(Tr)were both similar with Pn;The diurnal variation of intercellular CO_2 concentration(Ci) was roughly opposite to the diurnal variation trend of Pn,and showed a "W" shape.The increasing of Ci at noon indicated that the midday decreasing of net photosynthetic rate was mainly affected by non-stomatal limiting factors.(2)Correlation analysis showed that Pn had a significant positive correlation with Tr at P<0.01 level of current-year leaves,and Pn had a significant positive correlation with Gs and Tr at P<0.01 level of one-year old leaves.(3)The maximum net photosynthetic rate(Pnmax) and the light saturation points(LSP) of current-year leaves of the Q.franchetii were both higher than those of one-year old leaves.It indicated that the current-year leaves adapted well to high light.The light compensation points(LCP) of current-year leaves and one-year old leaves were low,while LCP of one-year old leaves was lower than that of current-year leaves.The one-year old leaves showed stronger shade-tolerance and were similar to the characteristics of shade plants.
引文
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[8]衣宁,赵文倩,刘倩,等.油松新生叶与老叶光合功能的比较[J].林业科技,2014,39(6):10-14.
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[12]Liu Z W.Net Photosynthetic Rate of Pumpkin in Fruit-setting Period and the Day Change Character of Effecting Factors[J].Chinese Agricultural Science Bulletin,2005(3):233-236,242.
[13]吴晓龙,吴毅,张斌,等.7种北美橡树的光合生理特性分析[J].中南林业科技大学学报,2018,38(3):34-39.
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[15]刘方炎,张志翔,王小庆,等.水分条件对锥连栎种子萌发及幼苗早期生长的影响[J].热带亚热带植物学报,2011,19(2):105-112.
[16]余婷,孟丽媛,张辉红,等.锥连栎种子萌发对种皮和温度的响应[J].种子,2017,36(7):3-7.
[17]赵广东,王兵,李少宁,等.江西大岗山常绿阔叶林优势种丝栗栲和苦槠栲不同叶龄叶片光合特性研究[J].江西农业大学学报,2005,27(2):161-165.
[18]赵玲珍,朱首军.三种树莓光合特性的研究[J].西北林学院学报,2006,21(4):39-42.
[19]马久蓉,高松,闫明,等.野生东北草莓与栽培草莓光合特性的比较[J].江苏农业科学,2018,46(5):132-134.
[20]Farquhar G D,Sharkey T D.Stomatal Conductance and Photosynthesis[J].Annu.rev.plant Physiol,1982,33(33):317-345.
[21]万素梅,贾志宽,杨宝平.苜蓿光合速率日变化及其与环境因子的关系[J].草地学报,2009,17(1):27-31.
[22]姜琳,杨暖,姜官恒,等.三种不同叶色栎树光合特性研究[J].山东林业科技,2016,46(2):12-16.
[23]李月灵,金则新.玉兰叶片光合速率和叶绿素荧光参数的日变化[J].江苏农业科学,2012,40(9):164-168.
[24]许大全,沈允钢.植物光合作用效率的Et变化[J].植物生理学报,1997,23(4):410-416.
[25]段龙飞,尚爱芹,杨敏生,等.中华金叶榆光合特性和叶绿素荧光参数日变化研究[J].河北农业大学学报,2014,37(6):50-55.
[26]郑元,吴月圆,辛培尧,等.环境因子对无籽刺梨光合生理日变化进程的影响研究[J].西部林业科学,2013,42(3):21-27.
[27]郑威,何琴飞,彭玉华,等.石漠化区银合欢林光响应曲线模型比较[J].西南林业大学学报,2018,38(2):23-29.
[28]韦中绵,覃德文,吴敏,等.不同光照强度对火力楠幼苗生长及生理特性的影响[J].西部林业科学,2018,47(2):48-53.
[29]柯世省,金则新,林恒琴,等.天台山东南石栎光合生理生态特性[J].生态学杂志,2004,23(3):1-5.
[30]李桂祥,王长君,刘伟,等.燕红桃及其芽变岱妃桃的叶片参数与光合特性的比较[J].江苏农业科学,2016,44(6):241-244.
[31]高鹤,宗俊勤,陈静波,等.7种优良观赏草光合生理日变化及光响应特征研究[J].草业学报,2010,19(4):87-93.
[32]吴青青.三种阔叶树不同生长时期叶片的光合特性及环境响应[D].南京:南京林业大学,2015.
[2]杨文.不同草莓品种光合特性的研究[D].哈尔滨:东北农业大学,2016.
[3]陈启常,常杰,刘珂,等.青冈常绿阔叶林主要植物种叶片的光合特性及其群落学意义[J].植物生态学报,1999,23(5):393-400.
[4]Shi W,Chen Q,Qiao X.Preliminary study on the model for the photosynthesis rate of cucumber leaves at different ages and determination of parameters in sunlight greenhouse[J].Transactions of the Chinese Society of Agricultural Engineering,2005(5):113-118.
[5]陈凯利,李建明,贺会强,等.水分对番茄不同叶龄叶片光合作用的影响[J].生态学报,2013,33(16):4919-4929.
[6]柯世省,金则新,李钧敏.浙江天台山茶树光合日变化及光响应[J].应用与环境生物学报,2002,8(2):159-164.
[7]任军辉,王姣月,丁云春,等.石楠和女贞不同叶龄光合生理生态特征研究[J].陕西林业科技,2014(3):18-21.
[8]衣宁,赵文倩,刘倩,等.油松新生叶与老叶光合功能的比较[J].林业科技,2014,39(6):10-14.
[9]Sinica A,Bei jing,Yang Z,et al.Study on Photosynthetic Physiological Ecology of Plants in the Typical Steppe Zone[J].Grassland of China,1999(3):21-28.
[10]林金科,赖明志.茶树叶片净光合速率对生态因子的响应[J].生态学报,2000,20(3):404-408.
[11]Mohua Y.Photosynthesis Change in A Day of Ginkgo biloba[J].Economic Forest Researches,2004,22(4):15-18.
[12]Liu Z W.Net Photosynthetic Rate of Pumpkin in Fruit-setting Period and the Day Change Character of Effecting Factors[J].Chinese Agricultural Science Bulletin,2005(3):233-236,242.
[13]吴晓龙,吴毅,张斌,等.7种北美橡树的光合生理特性分析[J].中南林业科技大学学报,2018,38(3):34-39.
[14]中国科学院昆明植物研究所.云南植物志[M].北京:科学出版社,2005.
[15]刘方炎,张志翔,王小庆,等.水分条件对锥连栎种子萌发及幼苗早期生长的影响[J].热带亚热带植物学报,2011,19(2):105-112.
[16]余婷,孟丽媛,张辉红,等.锥连栎种子萌发对种皮和温度的响应[J].种子,2017,36(7):3-7.
[17]赵广东,王兵,李少宁,等.江西大岗山常绿阔叶林优势种丝栗栲和苦槠栲不同叶龄叶片光合特性研究[J].江西农业大学学报,2005,27(2):161-165.
[18]赵玲珍,朱首军.三种树莓光合特性的研究[J].西北林学院学报,2006,21(4):39-42.
[19]马久蓉,高松,闫明,等.野生东北草莓与栽培草莓光合特性的比较[J].江苏农业科学,2018,46(5):132-134.
[20]Farquhar G D,Sharkey T D.Stomatal Conductance and Photosynthesis[J].Annu.rev.plant Physiol,1982,33(33):317-345.
[21]万素梅,贾志宽,杨宝平.苜蓿光合速率日变化及其与环境因子的关系[J].草地学报,2009,17(1):27-31.
[22]姜琳,杨暖,姜官恒,等.三种不同叶色栎树光合特性研究[J].山东林业科技,2016,46(2):12-16.
[23]李月灵,金则新.玉兰叶片光合速率和叶绿素荧光参数的日变化[J].江苏农业科学,2012,40(9):164-168.
[24]许大全,沈允钢.植物光合作用效率的Et变化[J].植物生理学报,1997,23(4):410-416.
[25]段龙飞,尚爱芹,杨敏生,等.中华金叶榆光合特性和叶绿素荧光参数日变化研究[J].河北农业大学学报,2014,37(6):50-55.
[26]郑元,吴月圆,辛培尧,等.环境因子对无籽刺梨光合生理日变化进程的影响研究[J].西部林业科学,2013,42(3):21-27.
[27]郑威,何琴飞,彭玉华,等.石漠化区银合欢林光响应曲线模型比较[J].西南林业大学学报,2018,38(2):23-29.
[28]韦中绵,覃德文,吴敏,等.不同光照强度对火力楠幼苗生长及生理特性的影响[J].西部林业科学,2018,47(2):48-53.
[29]柯世省,金则新,林恒琴,等.天台山东南石栎光合生理生态特性[J].生态学杂志,2004,23(3):1-5.
[30]李桂祥,王长君,刘伟,等.燕红桃及其芽变岱妃桃的叶片参数与光合特性的比较[J].江苏农业科学,2016,44(6):241-244.
[31]高鹤,宗俊勤,陈静波,等.7种优良观赏草光合生理日变化及光响应特征研究[J].草业学报,2010,19(4):87-93.
[32]吴青青.三种阔叶树不同生长时期叶片的光合特性及环境响应[D].南京:南京林业大学,2015.
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