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Citation:

Study on Photosynthetic Characteristics of FourA lnus cremastogyne Varieties under DifferentCO2 Concentrations

  • Received Date: 2007-04-12
  • In order to ut ilize the superior variet ies o fA lnus cremastogyne sc ientif ica lly, the photosynthetic characteristics o f fourA lnu s cremastogyne fam ilies, H1, H12, J5 and J10, w ere stud ied under different CO2 concentrations atseedling stage. The results w ere as follow s: ( 1)W ith the increase o fCO2 concentration, the net photosynthet ic rate offourA lnus cremastogyne varieties show ed ascending trend, the irCO2 compensation po int w ere from 39μmo l?mol-1to 154μmol?mol-1, and their CO2 saturat ion po in tw ere from 800μmo l?mol-1 to 2 000μmol?mol-1. The highest va lue of Pm show ed in June, Wh ile the low est in O ctember; ( 2)W ith the increase of CO2 concentrat ion, thecarboxylat ion efficiency( CE) o f fourA lnus cremastogyne varietiesw ere betw een 0. 001 5 and 0. 051 5, andH 1, H12presented greater CE, So their high temperature tolerance ab ility w as stronger than that o f J5 and J10; w hile H12show ed stronger photosynthetic efficiency thanH 1; ( 3)W ith the increase of CO2 concentration, the transpirationrate ( Tr) and stom atal conductance ( Cond) decreased, wh ile the in terce llu lar CO2 concentration ( C i) increased.The low est eigenvalue o fTr, C i and Cond show ed in October; and the performance o fH12 and J10 w as rather g reater thanH1 and J5. So irragration in Autumn and drough t-resistance variety selection p layed important ro le in grow thofA lnus cremastogyne. ( 4) The vapor deflic it at the leaf surface o fA lnus cremastogyne varieties increased slow ly w iththe increase o f CO2 concentra tion.
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  • [1] 王军辉, 顾万春, 夏良放, 等. 桤木种源(群体)品系材性性状的遗传变异[J] . 林业科学研究, 2001, 14 ( 4) : 362 ~ 368

    [2] 许忠坤, 徐清乾. 桤木造纸材遗传改良前景. 见: 南方林木遗传育种研究[M] . 北京: 中国林业出版社, 2006: 159 ~ 161

    [3] 周永丽, 刘福云. 四川桤木木材材性初步研究[J] . 四川林业科技, 2003 ( 1) : 75 ~ 76

    [4] 李邀夫, 吴际友. 四川桤木的丰产性能及栽培技术[J] . 湖南林业科技, 2004, 31( 1) : 8 ~ 19

    [5] 吴际友, 童方平, 龙应忠, 等. 四川桤木秋季嫩枝扦插效应分析[J] . 湖南林业科技, 2004, 31( 5 ) : 4~ 6

    [6] 吴际友, 龙应忠, 童方平. 桤木优树选择[J]. 湖南林业科技,2004, 31 ( 6) : 10~ 12

    [7] 李少伟. 桤木育苗技术试验[J] . 湖南环境生物职业技术学院学报, 2003, 9( 2) : 107~ 109

    [8] 卓仁英, 陈益泰. 五种桤木属植物的光合特性初步研究[J] . 浙江林业科技, 2004, 24( 6) : 1~ 4

    [9] 朱万泽, 王金锡, 薛建辉, 等. 台湾桤木引种的光合生理特性研究[J] . 西北植物学报, 2004, 24( 11 ): 2 012 ~ 2 019

    [10] 朱万泽, 王金锡, 薛建辉, 等. 四川桤木光合生理特性研究[J] .西南林学院学报, 2001 ( 4) : 196 ~ 204

    [11] 朱万泽, 王金锡. 引种台湾桤木的蒸腾特性及其影响因子[J] .四川林业科技, 2005( 1 ) : 9~ 14

    [12] 赵广琦, 张利权, 梁霞. 芦苇与入侵植物互花米草的光合特性比较[J]. 生态学报, 2005, 25( 7) : 1 604~ 1 611

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    Yu Q ing, Wang T D. S im u lat ion of th e physciological respon ses ofC3 p lan t leaves to environm en tal factors by am odelw h ich comb in esstom atal conductance, photosyn thes is and transp irat ion [J] . ActaBotan ica S in ica, 1998, 40: 740~ 754
    [16] 孙伟, 王德利, 王立, 等. 狗尾草蒸腾特性与水分利用效率对模拟光辐射增强和CO2浓度升高的响应[J] . 植物生态学报,2003, 27( 4 ) : 448~ 453

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Study on Photosynthetic Characteristics of FourA lnus cremastogyne Varieties under DifferentCO2 Concentrations

  • 1. Cen tral SouthUn ivers ity of Forestry and T echnology, Changsh a?? 410004, Hu# nan, Ch ina
  • 2.  Hunan Academy of Forestry, Changsh a?? 410004, Hunan, Ch ina
  • 3.  3. Research In stitu te of Forestry, CAF, Beijing?? 100091, Ch ina
  • 4. Research In stitu te of Forestry, CAF, Beijing?? 100091, Ch ina

Abstract: In order to ut ilize the superior variet ies o fA lnus cremastogyne sc ientif ica lly, the photosynthetic characteristics o f fourA lnu s cremastogyne fam ilies, H1, H12, J5 and J10, w ere stud ied under different CO2 concentrations atseedling stage. The results w ere as follow s: ( 1)W ith the increase o fCO2 concentration, the net photosynthet ic rate offourA lnus cremastogyne varieties show ed ascending trend, the irCO2 compensation po int w ere from 39μmo l?mol-1to 154μmol?mol-1, and their CO2 saturat ion po in tw ere from 800μmo l?mol-1 to 2 000μmol?mol-1. The highest va lue of Pm show ed in June, Wh ile the low est in O ctember; ( 2)W ith the increase of CO2 concentrat ion, thecarboxylat ion efficiency( CE) o f fourA lnus cremastogyne varietiesw ere betw een 0. 001 5 and 0. 051 5, andH 1, H12presented greater CE, So their high temperature tolerance ab ility w as stronger than that o f J5 and J10; w hile H12show ed stronger photosynthetic efficiency thanH 1; ( 3)W ith the increase of CO2 concentration, the transpirationrate ( Tr) and stom atal conductance ( Cond) decreased, wh ile the in terce llu lar CO2 concentration ( C i) increased.The low est eigenvalue o fTr, C i and Cond show ed in October; and the performance o fH12 and J10 w as rather g reater thanH1 and J5. So irragration in Autumn and drough t-resistance variety selection p layed important ro le in grow thofA lnus cremastogyne. ( 4) The vapor deflic it at the leaf surface o fA lnus cremastogyne varieties increased slow ly w iththe increase o f CO2 concentra tion.

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