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 不同光照强度对胡椒扦插苗农艺性状的影响
表1 不同光照强度条件下单株胡椒各器官生长情况Tab. 1 The growth of each organ of pepper under different light intensities |
| 光照强度 Light intensity/ (µmol·m-2·s-1) | 叶片数 Leaf number | 叶鲜重 Leaf fresh weight/g | 茎重 Stem fresh weight/g | 根重 Root fresh weight/g | 净增生物量 Net increase in biomas/g | 抽穗数量Heading number |
|---|---|---|---|---|---|---|
| 135(T1) | 56.00±18.08b | 58.69±9.65b | 109.11±5.13b | 8.77±2.65b | 100.35±3.78b | 0.33±0.58b |
| 270(T2) | 101.33±17.02a | 98.23±14.41a | 173.89±21.55ab | 21.07±8.29a | 152.81±23.29a | 9.67±2.64b |
| 405(T3) | 111.67±20.41a | 86.67±15.07a | 181.63±20.89a | 23.18±6.13a | 158.45±21.29a | 25.00±4.87a |
| 540(T4) | 108.33±18.02a | 95.84±10.05a | 153.31±17.53ab | 19.69±5.21a | 133.62±13.73ab | 10.33±2.04b |
Note: Different lowercase letters in the same column indicate significant difference (P<0.05). | |
注:同列不同小写字母表示差异显著(P<0.05)。 |
表2 不同光照条件下胡椒单叶的生长情况Tab. 2 The growth of pepper single leaf under different light conditions |
| 光照强度 Light intensity/ (µmol·m-2·s-1) | 叶面积 Leaf area/cm2 | 叶厚 Leaf thickness/mm | 鲜重 Fresh wight/g |
|---|---|---|---|
| 135(T1) | 97.89±9.38a | 0.72±0.03a | 1.88±0.06a |
| 270(T2) | 65.77±3.12b | 0.67±0.01ab | 1.40±0.10b |
| 405(T3) | 59.04±6.59b | 0.65±0.04b | 1.24±0.21b |
| 540(T4) | 58.19±3.18b | 0.69±0.03ab | 1.30±0.14b |
Note: Different lowercase letters in the same column indicate significant difference (P<0.05). | |
注:同列不同小写字母表示差异显著(P<0.05)。 |
2.2 光照强度对胡椒扦插苗光合作用的影响
2.3 光照强度对胡椒叶片糖代谢的影响
表3 不同光照强度处理15 d后胡椒成熟叶片糖类物质的含量Tab. 3 The content of carbohydrate in ripe pepper leaves treated with different light intensities for 15 days |
| 光照强度 Light intensity/(µmol·m-2·s-1) | 可溶性糖 Soluble sugar/(mg·g-1) | 蔗糖Sucrose/(mg·g-1) | 葡萄糖Glucose/(mg·g-1) | 果糖 Fructose/(mg·g-1) | 淀粉 Starch/(mg·g-1) |
|---|---|---|---|---|---|
| 135(T1) | 7.54±0.65b | 4.84±0.76b | 4.24±0.71b | 8.22±1.83b | 5.66±1.29b |
| 270(T2) | 10.35±0.52a | 5.17±0.74ab | 7.60±1.35a | 13.09±1.07a | 9.28±2.17a |
| 405(T3) | 10.99±0.19a | 4.25±0.44b | 4.53±0.50b | 14.09±1.02a | 9.65±2.22a |
| 540(T4) | 9.97±0.95a | 6.55±0.94a | 5.82±0.76ab | 15.09±2.53a | 10.55±2.19a |
Note: Different lowercase letters in the same column indicate significant difference (P<0.05). | |
注:同列不同小写字母表示差异显著(P<0.05)。 |
表4 不同光强处理40 d后胡椒成熟叶片糖类物质的含量Tab. 4 The content of carbohydrate in ripe pepper leaves after treatment with different light intensities for 40 days |
| 光照强度 Light intensity/(µmol·m-2·s-1) | 可溶性糖 Soluble sugar/(mg·g-1) | 蔗糖 Sucrose/(mg·g-1) | 果糖 Fructose/(mg·g-1) | 淀粉 Starch/(mg·g-1) | 蔗糖/淀粉Sucrose/Starch |
|---|---|---|---|---|---|
| 135(T1) | 11.71±0.99c | 13.64±3.66b | 8.15±0.25 d | 5.05±0.49d | 1.61 |
| 270(T2) | 20.43±1.03a | 16.82±2.66b | 13.60±1.02 b | 12.94±1.25a | 1.30 |
| 405(T3) | 20.20±0.29a | 32.97±4.05a | 14.59±0.62 a | 11.29±1.21ab | 2.92 |
| 540(T4) | 16.10±0.58b | 21.53±3.04b | 11.60±0.60 c | 8.65±0.91c | 2.49 |
Note: Different lowercase letters in the same column indicate significant difference (P<0.05). | |
注:同列不同小写字母表示差异显著(P<0.05)。 |
2.4 光照强度对胡椒扦插苗成熟叶片内源激素水平的影响
2.5 胡椒成熟叶片生理指标与花量的相关性分析
表5 胡椒成熟叶片生理指标与花量的相关性分析Tab. 5 Correlation analysis between physiological indexes of pepper leaves and flowering quantity |
| 相关因子 The related factors | 可溶性糖 Soluble sugar | 果糖 Fructose | 蔗糖 Sucrose | 淀粉 Starch | 生长素 IAA | 脱落酸 ABA | 赤霉素GA3 | 抽穗数 Heading number |
|---|---|---|---|---|---|---|---|---|
| 可溶性糖Soluble sugar | 1 | |||||||
| 果糖Fructose | 0.970** | 1 | ||||||
| 蔗糖Fructose | -0.004 | 0.124 | 1 | |||||
| 淀粉Starch | 0.601* | 0.694* | 0.389 | 1 | ||||
| 生长素IAA | -0.345 | -0.286 | 0.745** | 0.049 | 1 | |||
| 脱落酸ABA | -0.190 | -0.233 | -0.620* | -0.601* | -0.403 | 1 | ||
| 赤霉素GA3 | 0.644* | 0.709** | -0.172 | 0.460 | -0.368 | 0.104 | 1 | |
| 抽穗数Heading number | 0.704* | 0.753** | 0.157 | 0.578* | -0.206 | -0.483 | 0.658* | 1 |
Note: ** indicate extremelys significant correlation at 0.01 level (bilateral). * indicates significant correlation at the 0.05 level (bilateral). | |
注:** 表示在0.01水平(双侧)上极显著相关;* 表示在0.05水平(双侧)上显著相关。 |
