1 材料与方法
1.1 材料
1.2 方法
1.2.1 试验设计
1.2.2 项目测定
1.3 数据处理
2 结果与分析
2.1 不同比例红蓝光及光照强度对金线莲生长的影响
表1 不同比例红蓝光及光照强度对金线莲生长的影响Tab. 1 Effects of different proportion of red and blue light and light intensity on the growth of A. roxburghii |
| 处理 Treatment | 株高 Plant height/cm | 茎粗 Stem diameter/mm | 植株鲜重 Plant fresh weight/g | 植株干重 Plant dry weight/g | 叶面积 Leaf area/cm2 | 叶片数 Leaf number | 折干率 DW/FW/% |
|---|---|---|---|---|---|---|---|
| T1 | 10.04±1.24bc | 3.034±0.18b | 2.408±0.45cd | 0.176±0.03bc | 6.339±0.96cd | 5.6±0.54a | 7.31 |
| T2 | 8.96±0.97c | 2.904±0.28b | 2.010±0.27d | 0.158±0.03c | 5.071±0.67d | 5.0±0.54a | 7.86 |
| T3 | 9.42±1.20bc | 3.334±0.18a | 3.104±0.39abc | 0.240±0.03ab | 8.183±1.22ab | 5.0±0.70a | 7.74 |
| T4 | 12.98±1.68a | 3.398±0.20a | 3.476±0.69ab | 0.298±0.04a | 9.227±1.73a | 5.4±0.44a | 8.57 |
| T5 | 12.78±1.47a | 3.382±0.14a | 3.814±0.71a | 0.305±0.06a | 7.742±1.04abc | 5.6±0.54a | 7.99 |
| CK | 10.92±1.11b | 2.998±0.21b | 2.850±0.48bc | 0.215±0.06bc | 6.561±1.61bcd | 5.2±0.54a | 7.56 |
注:同列数据后不同小写字母表示处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters after the same column of data indicate significant difference (P<0.05). |
2.2 不同比例红蓝光及光照强度对金线莲叶片光合性能的影响
表2 不同比例红蓝光及光照强度对金线莲叶片光合光合性能的影响Tab. 2 Effects of different proportion of red and blue light and light intensity on photosynthetic performance of A. roxburghii |
| 处理 Treatment | 叶绿素a Chl a/(mg·g-1) | 叶绿素b Chl b/(mg·g-1) | 类胡萝卜素 Car/(mg·g-1) | 叶绿素a/叶绿素b Chl a/Chl b | 光合速率Pn /(μmol·m-2·s-1) |
|---|---|---|---|---|---|
| T1 | 2.966±0.20ab | 0.928±0.12ab | 0.768±0.08ab | 3.217±0.21c | 0.559±0.004d |
| T2 | 3.421±0.17a | 0.996±0.04a | 0.810±0.04a | 3.437±0.17abc | 0.734±0.043c |
| T3 | 2.646±0.17bc | 0.741±0.06bcd | 0.609±0.16b | 3.574±0.09ab | 0.602±0.135d |
| T4 | 2.927±0.45ab | 0.856±0.20abc | 0.723±0.05ab | 3.464±0.28abc | 1.085±0.078b |
| T5 | 2.379±0.12cd | 0.642±0.04cd | 0.757±0.04ab | 3.708±0.07a | 2.045±0.064a |
| CK | 2.032±0.44d | 0.623±0.14d | 0.631±0.13ab | 3.270±0.06bc | 0.797±0.046c |
注:同列数据后不同小写字母表示处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters after the same column of data indicate significant difference (P<0.05). |
2.3 不同比例红蓝光及光照强度对金线莲叶片叶绿素荧光参数的影响
表3 不同比例红蓝光及光照强度对金线莲叶片叶绿素荧光参数的影响Tab. 3 Effects of different proportion of red and blue light and light intensity on fluorescence parameters of A. roxburghii |
| 处理Treatment | Fv/Fm | Fv/Fo | ΦPSII | ETR | qN | qP |
|---|---|---|---|---|---|---|
| T1 | 0.673±0.08b | 2.215±0.79b | 0.082±0.02b | 3.47±1.11b | 0.855±0.03a | 0.090±0.02c |
| T2 | 0.741±0.03ab | 2.908±0.47a | 0.100±0.01b | 4.20±0.29b | 0.858±0.03a | 0.116±0.02c |
| T3 | 0.717±0.01ab | 2.545±0.20ab | 0.136±0.01a | 5.72±0.56a | 0.836±0.02a | 0.286±0.03b |
| T4 | 0.752±0.01a | 3.041±0.15a | 0.139±0.01a | 5.90±0.62a | 0.561±0.03d | 0.365±0.02a |
| T5 | 0.674±0.03b | 2.092±0.29b | 0.090±0.004b | 3.80±0.21b | 0.632±0.04c | 0.287±0.03b |
| CK | 0.583±0.07c | 1.445±0.38c | 0.105±0.03b | 4.40±1.50b | 0.705±0.03b | 0.364±0.08a |
注:同列数据后不同小写字母表示处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters after the same column of data indicate significant difference (P<0.05). |
2.4 不同比例红蓝光及光照强度对金线莲叶片抗氧化酶活性的影响
表4 不同比例红蓝光及光照强度对金线莲叶片抗氧化酶活性的影响Tab. 4 Effects of different proportion of red and blue light and light intensity on antioxidant enzyme activity of A. roxburghii |
| 处理 Treatment | SOD活性 SOD activity/(U·g-1) | POD活性 POD activity/(U·g-1·min-1) | CAT活性 CAT activity/(U·g-1·min-1) | MDA含量 MDA content/(μmol·g-1) |
|---|---|---|---|---|
| T1 | 21.11±7.81c | 95.11±16.47bc | 118.42±14.22c | 20.15±1.07a |
| T2 | 34.37±4.16bc | 87.97±28.82c | 209.28±19.00a | 12.61±1.02bc |
| T3 | 32.83±6.66bc | 149.79±14.27a | 116.39±2.74c | 18.18±5.80ab |
| T4 | 58.82±11.08a | 109.37±16.47abc | 104.86±23.48c | 13.68±1.84abc |
| T5 | 47.08±11.67ab | 137.90±10.89ab | 177.18±24.41ab | 11.06±0.85c |
| CK | 62.50±7.15a | 121.26±7.13abc | 137.18±27.00bc | 16.87±0.93bc |
注:同列数据后不同小写字母表示处理间差异显著(P<0.05)。 | |
Note: Different lowercase letters after the same column of data indicate significant difference (P<0.05). |
