5个种源白花泡桐光合特性比较
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摘要
[目的]以河南种源为对照,探讨4种广西地区白花泡桐叶片光合色素及光合特性的差异。[方法]运用乙醇-丙酮浸提法测定不同种源叶片叶绿素含量,利用LI-6400光合测定仪测定不同种源白花泡桐的光合特性指标并进行相关性分析。[结果]田林、南丹、河南、鹿寨和上思这5个种源白花泡桐叶片的叶绿素a/b(Chla/b)、净光合速率(Pn)、蒸腾速率(Tr)、气孔导度(Gs)和水分利用效率(WUE)种间差异不明显,但其中河南种与广西种差异显著(P<0.05),表明河南种源是具有较高光合生产潜力的白花泡桐种源。相关性分析表明,5个白花泡桐叶绿素含量和光合生理指标均呈显著相关,说明白花泡桐叶片叶绿素含量与光合作用之间有直接联系;Pn与Tr、Gs呈极显著正相关(P<0.01),体现三者有较好的系统响应特征;Tr、Gs与WUE均呈极显著负相关(P<0.01),说明作为影响WUE的因子Tr、Gs与之有极密切的联系。[结论]河南种源较广西各种源而言具有更加优良的光合特性,为广西区内白花泡桐人工林种源种植筛选提供了依据。
[Objective]The differences of photosynthetic pigments and photosynthetic characteristics of Paulownia fortunei in 4 kinds of Guangxi areas were compared with Henan provenance. [Method]The content of chlorophyll in different provenances was determined by ethanol-acetone extraction. The photosynthetic characteristics of P. fortunei in different sources were measured by LI-6400 photosynthetic apparatus. [Result] There were significant differences( P < 0. 05) in the ratio of chlorophyll a to chlorophyll b( Chla/b),net photosynthetic rate( Pn),transpiration rate( Tr),stomatal conductance( Gs),water use sufficiency( WUE) among Henan and Guangxi. But in four strains of Guangxi of P. forunei stains,there were no significant differences. Comprehensive comparision showed that Henan strain was the P. fortunei varieties with high photosynthetic potential. Correlation analysis among photosynthetic parameters showed that there were significant correlations between Ct,Chla/b and Pn,Tr,Gs,WUE; significantly positive correlations between Pnand Tr,Gs( P < 0. 01); significantly negative correlations between Tr and WUE,Gsand WUE( P < 0. 01). The results indicated that the chlorophyll content in the leaves have directly relation with photosynthesis and it was characteristic of Pnand Tr,Gsto have better cooperative response and Tr,Gsand WUE had a very close relationship. [Conclusion]The Henan provenance has better photosynthetic characteristics than the various sources in Guangxi,which provides a basis for the selection of the plant source of P. fortunei plantation in Guangxi.
[Objective]The differences of photosynthetic pigments and photosynthetic characteristics of Paulownia fortunei in 4 kinds of Guangxi areas were compared with Henan provenance. [Method]The content of chlorophyll in different provenances was determined by ethanol-acetone extraction. The photosynthetic characteristics of P. fortunei in different sources were measured by LI-6400 photosynthetic apparatus. [Result] There were significant differences( P < 0. 05) in the ratio of chlorophyll a to chlorophyll b( Chla/b),net photosynthetic rate( Pn),transpiration rate( Tr),stomatal conductance( Gs),water use sufficiency( WUE) among Henan and Guangxi. But in four strains of Guangxi of P. forunei stains,there were no significant differences. Comprehensive comparision showed that Henan strain was the P. fortunei varieties with high photosynthetic potential. Correlation analysis among photosynthetic parameters showed that there were significant correlations between Ct,Chla/b and Pn,Tr,Gs,WUE; significantly positive correlations between Pnand Tr,Gs( P < 0. 01); significantly negative correlations between Tr and WUE,Gsand WUE( P < 0. 01). The results indicated that the chlorophyll content in the leaves have directly relation with photosynthesis and it was characteristic of Pnand Tr,Gsto have better cooperative response and Tr,Gsand WUE had a very close relationship. [Conclusion]The Henan provenance has better photosynthetic characteristics than the various sources in Guangxi,which provides a basis for the selection of the plant source of P. fortunei plantation in Guangxi.
引文
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[5]张智顺,张庆费,夏檑,等.遮阴对几种绿化植物光合特性和生长的影响[J].东北林业大学学报,2010,38(3):47-49.
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[14]张正斌,山仑.作物水分利用效率和蒸发蒸腾估算模型的研究进展[J].干旱地区农业研究,1997,15(1):73-78.
[15]高丽楠,张宏,陈舒慧,等.高原2种草本植物的光合作用和叶绿素荧光参数日动态[J].四川师范大学学报(自然科学版),2015,38(4):550-560.
[16]白伟岚,任建武,高永伟,等.园林植物的耐荫性研究[J].林业科技通讯,1999(2):12-15.
[17]冯立娟,苑兆和,尹燕雷,等.不同大丽花品种盛花期光合色素含量的变化[J].山东农业科学,2010(5):40-43.
[18]陈华蕊.幼龄芒果树光合特性的研究[D].海口:海南大学,2008.
[19]王玉佳,姜华,毕玉芬,等.紫花苜蓿光合作用对干热条件的生理响应[J].云南农业大学学报,2011,26(2):190-193.
[20]郑淑霞,上官周平.8种阔叶树种叶片气体交换特征和叶绿素荧光特性比较[J].生态学报,2006,26(4):1080-1087.
[21]陈香波,李淑娟,李毅,等.观赏山楂耐热性及其叶片光合与叶绿素荧光特性研究[J].西北植物学报,2009,29(11):2294-2300.
[2]肖松江,孙振元,杨中艺,等.3种爬山虎属植物23个生态型的耐荫性研究[J].中山大学学报(自然科学版),2006,45(2):73-77.
[3]陆銮眉,林金水,陈金河.7种观叶小盆栽植物的光合特性与耐阴性研究[J].热带作物学报,2013,34(4):732-737.
[4]李泽,谭晓风,袁军,等.4个油桐品种光合特性的日变化研究[J].中国农学通报,2013,29(25):12-15.
[5]张智顺,张庆费,夏檑,等.遮阴对几种绿化植物光合特性和生长的影响[J].东北林业大学学报,2010,38(3):47-49.
[6]唐焕伟,曲彦婷,张兴.遮光对郁金香叶片叶绿素含量及叶绿体超微结构的影响[J].东北林业大学学报,2011,42(4):77-82.
[7]佘诚棋,程鹏,季琳琳,等.油茶光合作用光响应曲线的拟合[J].经济林研究,2012,30(1):118-120.
[8]韦铄星,文仕知,张希,等.不同林龄四川桤木的光合生理特性分析[J].中南林业科技大学学报,2011,31(7):102-108.
[9]姜成英,莫保儒,吴文俊,等.不同品种油橄榄的光合生理分析[J].经济林研究,2010,28(2):24-28.
[10]楚秀丽.不同种源青钱柳苗年生长及叶内含物含量研究[D].南京:南京林业大学,2009.
[11]冯健,王骞春,颜廷武,等.不同种源东部白松苗期光合作用研究[J].辽宁林业科技,2011(2):5-7.
[12]杨江山,种培芳,常永义.樱桃叶片的光合特性研究[J].甘肃农业大学学报,2006,41(4):49-51.
[13]杨爱风.不同肥料对大平顶枣叶绿素和光合作用的影响[J].辽宁林业科技,2016(3):34-35.
[14]张正斌,山仑.作物水分利用效率和蒸发蒸腾估算模型的研究进展[J].干旱地区农业研究,1997,15(1):73-78.
[15]高丽楠,张宏,陈舒慧,等.高原2种草本植物的光合作用和叶绿素荧光参数日动态[J].四川师范大学学报(自然科学版),2015,38(4):550-560.
[16]白伟岚,任建武,高永伟,等.园林植物的耐荫性研究[J].林业科技通讯,1999(2):12-15.
[17]冯立娟,苑兆和,尹燕雷,等.不同大丽花品种盛花期光合色素含量的变化[J].山东农业科学,2010(5):40-43.
[18]陈华蕊.幼龄芒果树光合特性的研究[D].海口:海南大学,2008.
[19]王玉佳,姜华,毕玉芬,等.紫花苜蓿光合作用对干热条件的生理响应[J].云南农业大学学报,2011,26(2):190-193.
[20]郑淑霞,上官周平.8种阔叶树种叶片气体交换特征和叶绿素荧光特性比较[J].生态学报,2006,26(4):1080-1087.
[21]陈香波,李淑娟,李毅,等.观赏山楂耐热性及其叶片光合与叶绿素荧光特性研究[J].西北植物学报,2009,29(11):2294-2300.