1 材料与方法
1.1 材料
1.2 方法
1.3 数据处理
2 结果与分析
2.1 10种观赏竹叶绿素含量的比较
2.2 10种观赏竹光合特征比较
表1 各竹种光合性状Tab. 1 Characteristic parameters of light response of each bamboo species |
| 竹种 Bamboo species | 净光合速率Pn/(μmol∙m-2∙s-1) | 气孔导度Gs/(mol∙m-2∙s-1) | 胞间CO2浓度Ci/(μmol∙m-2∙s-1) | 蒸腾速率Tr/(mmol∙m-2∙s-1) | 水分利用率WUE/(μmol∙m-2∙s-1) |
|---|---|---|---|---|---|
| 花吊丝竹 | 1.54±0.01f | 0.03±0.01c | 282.15±0.49g | 0.59±0.02g | 1.99±0.01a |
| 青丝黄竹 | 1.34±0.02g | 0.03±0.01c | 295.31±0.53f | 0.67±0.02f | 1.50±0.02e |
| 花孝顺竹 | 3.92±0.03b | 0.09±0.01b | 299.21±0.67e | 1.72±0.01b | 1.77±0.01c |
| 花巨竹 | 4.04±0.02b | 0.13±0.01a | 318.77±0.50c | 1.85±0.02a | 1.77±0.02c |
| 金丝慈竹 | 4.48±0.03a | 0.13±0.02a | 325.59±0.72b | 1.73±0.01b | 1.93±0.01ab |
| 花竹 | 3.58±0.02c | 0.09±0.01b | 299.31±0.87e | 1.72±0.02b | 1.59±0.03de |
| 紫竹 | 1.69±0.02f | 0.06±0.01bc | 333.52±0.57a | 0.99±0.01d | 1.36±0.02f |
| 唐竹 | 2.43±0.09e | 0.04±0.01c | 271.79±0.79h | 0.94±0.02d | 1.88±0.03b |
| 小琴丝竹 | 1.65±0.03f | 0.04±0.01c | 295.31±0.64f | 0.88±0.02e | 1.55±0.01e |
| 佛肚竹 | 3.18±0.09d | 0.09±0.01b | 309.69±0.46d | 1.45±0.02c | 1.69±0.02cd |
注:同列不同小写字母表示不同竹种间差异显著(P<0.05)。 | |
Note: Different lowercase letters in the same column indicate significant difference at the 0.05 level. |
表2 各竹种Pn与各因子的相关性分析Tab. 2 Relations between Pn and related factors of bamboo species |
| 竹种Bamboo species | 光合有效辐射PAR | 胞间CO2浓度Ci | 蒸腾速率Tr | 气孔导度Gs | 水分利用率WUE |
|---|---|---|---|---|---|
| 花吊丝竹 | 0.665** | -0.959** | 0.932** | 0.889** | 0.946** |
| 青丝黄竹 | 0.805** | -0.932** | 0.921** | 0.920** | 0.916** |
| 花孝顺竹 | 0.818 | -0.959** | 0.954** | 0.952** | 0.937** |
| 花巨竹 | 0.931** | -0.946** | 0.948** | 0.971** | 0.946** |
| 金丝慈竹 | 0.831** | -0.902** | 0.957** | 0.952** | 0.891** |
| 花竹 | 0.826** | -0.954** | 0.952** | 0.951** | 0.938** |
| 紫竹 | 0.829** | -0.984** | 0.940** | 0.962** | 0.963** |
| 唐竹 | 0.816** | -0.898** | 0.958** | 0.973** | 0.882** |
| 小琴丝竹 | 0.627* | -0.919** | 0.771** | 0.811** | 0.961** |
| 佛肚竹 | 0.787 | -0.977** | 0.970** | 0.979** | 0.945** |
注:*表示在0.05水平显著相关;**表示在0.01水平显著相关。 | |
Note: * indicates significant correlation at 0.05 level; ** indicates significant correlation at the 0.01 level. |
2.3 10种观赏竹叶绿素荧光特性的测定
表3 各竹种的叶绿素荧光参数Tab. 3 Chlorophyll fluorescence parameters of bamboo species |
| 竹种Bamboo species | 初始荧光Fo | 最大荧光Fm | 可变荧光Fv | PSⅡ潜在光化学活性Fv/Fo | PSⅡ初级光能转换效率Fv/Fm |
|---|---|---|---|---|---|
| 花吊丝竹 | 159.330±0.194ab | 650.670±2.571bc | 491.330±2.758bc | 3.091±0.208ab | 0.753±0.012ab |
| 青丝黄竹 | 156.670±0.165b | 738.670±2.125abc | 582.001±2.149ab | 3.717±0.151a | 0.787±0.007a |
| 花孝顺竹 | 171.670±0.197ab | 616.330±0.573cd | 444.670±0.626cd | 2.632±0.206bc | 0.704±0.030ab |
| 花巨竹 | 173.001±0.568ab | 791.330±4.450ab | 618.330±3.734ab | 3.574±0.184a | 0.779±0.008a |
| 金丝慈竹 | 176.670±0.826ab | 765.670±0.625abc | 589.000±0.205ab | 3.356±0.162ab | 0.769±0.008a |
| 花竹 | 163.670±1.010ab | 669.670±3.990abc | 506.001±3.008abc | 3.094±0.044ab | 0.755±0.003ab |
| 紫竹 | 149.001±1.296b | 473.331±7.719d | 324.330±6.450d | 2.105±0.282c | 0.690±0.046b |
| 唐竹 | 170.001±0.933ab | 780.001±5.960abc | 610.000±4.168ab | 3.580±0.051a | 0.781±0.002a |
| 小琴丝竹 | 198.673±1.810a | 833.003±4.974a | 634.330±3.575a | 3.237±0.203ab | 0.762±0.011a |
| 佛肚竹 | 182.331±0.588ab | 729.331±2.270abc | 547.000±2.386abc | 3.015±0.196ab | 0.748±0.011ab |
注:同列不同小写字母表示不同竹种间差异显著(P<0.05)。 | |
Note: Different lowercase letters in the same column indicate significant difference at the 0.05 level. |
表4 各竹种的叶绿素荧光参数Tab. 4 Chlorophyll fluorescence parameters of bamboo species |
| 竹种Bamboo species | 非光化学淬灭系数qN | 光化学淬灭系数qP | PSII光能捕获效率ΦPSⅡ | 光合量子产额Yield |
|---|---|---|---|---|
| 花吊丝竹 | 0.796±0.169abcd | 0.960±0.022ab | 0.569±0.084abc | 0.530±0.039a |
| 青丝黄竹 | 0.916±0.058abc | 0.792±0.050c | 0.607±0.017ab | 0.470±0.036a |
| 花孝顺竹 | 0.213±0.096d | 0.894±0.011abc | 0.228±0.081c | 0.592±0.022a |
| 花巨竹 | 0.696±0.143abcd | 0.827±0.036bc | 0.514±0.064abc | 0.515±0.038a |
| 金丝慈竹 | 1.000±0.310abc | 0.889±0.023abc | 0.605±0.117ab | 0.469±0.080a |
| 花竹 | 1.383±0.104a | 0.992±0.000a | 0.767±0.023a | 0.453±0.020a |
| 紫竹 | 0.383±0.165cd | 0.950±0.034ab | 0.328±0.162bc | 0.555±0.013a |
| 唐竹 | 1.176±0.175ab | 0.805±0.060c | 0.679±0.052ab | 0.426±0.057a |
| 小琴丝竹 | 0.783±0.127abcd | 0.846±0.030bc | 0.569±0.058abc | 0.486±0.051a |
| 佛肚竹 | 0.650±0.203bcd | 0.955±0.012ab | 0.500±0.094abc | 0.553±0.054a |
注:同列不同小写字母表示不同竹种间差异显著(P<0.05)。 | |
Note: Different lowercase letters in the same column indicate significant difference at the 0.05 level. |
表5 叶绿素荧光参数间的相关性Tab. 5 Correlation among chlorophyll fluorescence parameters |
| 参数Parameter | 初始荧光Fo | 最大荧光Fm | 可变荧光Fv | PSⅡ潜在光化学活性Fv/Fo | PSⅡ初级光能转换效率Fv/Fm | 非光化学猝灭系数qN | 光化学猝灭系数qP | PSII光能捕获效率ΦPSⅡ | 光合量子产额Yield |
|---|---|---|---|---|---|---|---|---|---|
| Fo | 1.000 | ||||||||
| Fm | 0.962 | 1.000 | |||||||
| Fv | 0.967 | 0.980* | 1.000 | ||||||
| Fv /Fo | -0.975* | 0.199 | 0.650 | 1.000 | |||||
| Fv / Fm | -0.986* | 0.294 | 0.996 | 0.970* | 1.000 | ||||
| qN | 0.487 | 0.707 | 0.693 | 0.670 | 0.625 | 1.000 | |||
| qP | -0.648 | -0.831 | -0.82 | 0.802 | 0.765 | 0.981 | 1.000 | ||
| ΦPSⅡ | -0.623 | 0.000 | 0.801 | 0.782 | 0.743 | 0.987* | 0.999 | 1.000 | |
| Yield | -0.816* | -0.542 | -0.26 | 0.924 | 0.900 | 0.903 | 0.969 | 0.961 | 1.000 |
注:*表示在0.05水平显著相关。 | |
Note: * indicates significant correlation at the 0.05 level. |
2.4 主成分分析综合评价10种观赏竹的生态适应性
表6 各竹种的主成分分析Tab. 6 Principal component analysis of bamboo species |
| 指标 Index | 花吊丝竹 (D. minor var. amoenus) | 青丝黄竹(B. eutuldoides var. viridi- vittata) | 花孝顺竹 (B. multiplex f. Alphonse- karri) | 花巨竹 (G. verticillata) | 金丝慈竹(B. affinis) | 花竹 (B. albo- lineata Chia) | 紫竹 [P. nigra (Lodd. ex Lindl.)Munro] | 唐竹 (S. tootsik) | 小琴丝竹 (B. multiplex (Lour.) Raeusch. ex Schult) | 佛肚竹 (B. ventricosa) |
|---|---|---|---|---|---|---|---|---|---|---|
| 得分 | -4.16 | -0.65 | -0.13 | 4.10 | 3.60 | -0.58 | -5.14 | -1.32 | 1.85 | 2.42 |
| 排序 | 9 | 7 | 5 | 1 | 2 | 6 | 10 | 8 | 4 | 3 |
