1 材料与方法
1.1 材料
1.2 方法
表1 单因素试验的梯度设计Tab. 1 Single factorial experiments |
| 因素Factors | 水平Levels | ||||
|---|---|---|---|---|---|
| 琼脂Agar/(g∙L-1) | 0 | 1 | 2 | 3 | 4 |
| 蔗糖Sucrose/(g∙L-1) | 0 | 50 | 100 | 150 | 200 |
| 硼酸Boric acid/(mg∙L-1) | 0 | 100 | 200 | 300 | 400 |
| 硝酸钙 Calcium nitrate/(mg∙L-1) | 0 | 100 | 200 | 300 | 400 |
| 硫酸镁 Magnesium sulfate/(mg∙L-1) | 0 | 100 | 200 | 300 | 400 |
| 硝酸钾 Nitrate of potash/(mg∙L-1) | 0 | 100 | 200 | 300 | 400 |
表2 培养基组分对花粉离体萌发影响的正交设计Tab. 2 Orthogonal experiment of the effects of culture medium on pollen germination in vitro |
| 水平 Level | 因素Factors | |||
|---|---|---|---|---|
| A蔗糖 Sucrose /(g∙L-1) | B硼酸 Boric acid /(mg∙L-1) | C硝酸钙Calcium nitrate /(mg∙L-1) | D硫酸镁Magnesium sulfate/(mg∙L-1) | |
| 1 | 100 | 200 | 100 | 100 |
| 2 | 150 | 400 | 200 | 200 |
| 3 | 200 | 600 | 300 | 300 |
| 4 | 250 | 800 | 400 | 400 |
1.3 数据处理
2 结果与分析
2.1 6个单因素对甘蔗花粉萌发的影响
2.2 4因素正交试验对甘蔗花粉离体萌发的影响
表3 甘蔗花粉离体萌发的正交试验结果Tab. 3 Results by orthogonal experiment for sugarcane pollen germination in vitro |
| 试验编号 Serial number | 因素Factors | 萌发率 Germination rate /% | 花粉管长度 Pollen tube length /μm | |||
|---|---|---|---|---|---|---|
| A蔗糖 Sucrose /(g∙L-1) | B硼酸 Boric acid /(mg∙L-1) | C硝酸钙 Calcium nitrate /(mg∙L-1) | D硫酸镁Magnesium sulfate /(mg∙L-1) | |||
| 1 | 100 | 200 | 100 | 100 | 30.28 | 68.25 |
| 2 | 100 | 400 | 200 | 200 | 40.72 | 57.16 |
| 3 | 100 | 600 | 300 | 300 | 32.04 | 45.83 |
| 4 | 100 | 800 | 400 | 400 | 30.56 | 63.18 |
| 5 | 150 | 200 | 200 | 300 | 43.72 | 66.79 |
| 6 | 150 | 400 | 100 | 400 | 70.36 | 89.21 |
| 7 | 150 | 600 | 400 | 100 | 45.84 | 64.53 |
| 8 | 150 | 800 | 300 | 200 | 39.40 | 80.27 |
| 9 | 200 | 200 | 300 | 400 | 62.96 | 97.54 |
| 10 | 200 | 400 | 400 | 300 | 85.52 | 99.86 |
| 11 | 200 | 600 | 100 | 200 | 75.08 | 105.36 |
| 12 | 200 | 800 | 200 | 100 | 66.76 | 112.27 |
| 13 | 250 | 200 | 400 | 200 | 48.72 | 108.35 |
| 14 | 250 | 400 | 300 | 100 | 62.48 | 100.23 |
| 15 | 250 | 600 | 200 | 400 | 50.64 | 88.46 |
| 16 | 250 | 800 | 100 | 300 | 42.12 | 81.59 |
表4 不同培养基上花粉萌发率和花粉管长度的直观分析Tab. 4 Intuitive analysis of pollen germination rate and pollen tube length on different mediums |
| 指标 Index | 萌发率Germination rate/% | 花粉管长度Pollen tube length/μm | ||||||
|---|---|---|---|---|---|---|---|---|
| A蔗糖Sucrose | B硼酸 Boric acid | C硝酸钙Calcium nitrate | D硫酸镁Magnesium sulfate | A蔗糖Sucrose | B硼酸 Boric acid | C硝酸钙Calcium nitrate | D硫酸镁Magnesium sulfate | |
| K1 | 33.4 | 46.42 | 54.46 | 51.34 | 58.61 | 85.23 | 86.10 | 86.32 |
| K2 | 49.83 | 64.77 | 50.46 | 50.98 | 75.20 | 86.62 | 81.17 | 87.79 |
| K3 | 72.58 | 50.9 | 49.22 | 50.85 | 103.76 | 76.05 | 80.97 | 73.52 |
| K4 | 50.99 | 44.71 | 52.66 | 53.63 | 94.66 | 84.33 | 83.98 | 84.60 |
| R | 39.18 | 20.06 | 5.24 | 2.78 | 45.15 | 10.57 | 5.13 | 14.27 |
Note: K1, K2, K3 and K4 represent the mean of four levels of each factor, respectively. R represents the range. | |
注:K1、K2、K3、K4分别表示各因素4个水平的均数,R代表极差。 |
表5 不同培养基上花粉萌发率和花粉管长度的方差分析Tab. 5 Variance analysis on pollen germination rate and pollen tube length in different mediums |
| 项目 Project | 因素 Factor | 偏差平方和DEVSQ | 自由度DOF | F比 F-ratio | F0.05 | F0.01 | 显著性 Significance |
| 萌发率 Germination rate | 蔗糖(A) | 3099.46 | 3 | 32.72 | 9.28 | 29.50 | ** |
| 硼酸(B) | 992.81 | 3 | 10.48 | * | |||
| 硝酸钙(C) | 64.91 | 3 | 0.69 | ||||
| 硫酸镁(D) | 20.38 | 3 | 0.22 | ||||
| 误差 | 94.73 | 3 | |||||
| 花粉管长度 Pollen tube length | 蔗糖(A) | 4890.86 | 3 | 12.48 | * | ||
| 硼酸(B) | 272.70 | 3 | 0.70 | ||||
| 硝酸钙(C) | 72.22 | 3 | 0.18 | ||||
| 硫酸镁(D) | 505.51 | 3 | 1.29 | ||||
| 误差 | 391.97 | 3 |
Note: ** and * indicate significant differences at 0.01 and 0.05 level, respectively. | |
注:**和*分别表示在0.01和0.05水平差异显著。 |
图3 不同培养基下甘蔗花粉萌发情况A、C:利用组合A3B2C1D4培养基花粉萌发情况;B、D:利用A3B2C1D2培养基花粉萌发情况;E:新鲜花粉成熟度检测。 Fig. 3 Situations of the sugarcane pollen germination under different culture mediums A, C: Pollen germination under A3B2C1D4 culture medium; B, D: Pollen germination under A3B2C1D2 culture medium; E: Detection of the fresh mature pollen. |
2.3 同温度对甘蔗花粉萌发和花粉管伸长的影响
表6 不同温度下甘蔗花粉的萌发和花粉管生长情况Tab. 6 Pollen germination and pollen tube growth of sugarcane under different temperatures |
| 温度 Temperature/℃ | 萌发率 Germination rate /% | 花粉管长度 Pollen tube length /μm |
|---|---|---|
| 26 | 63.24±2.14C | 95.17±11.04C |
| 28 | 78.39±3.81B | 105.52±13.74BC |
| 30 | 89.83±5.63A | 143.03±9.67A |
| 32 | 78.16±2.41B | 118.41±10.16B |
Note: Different capital letters in the same column indicate significant difference at 0.01 level. | |
注:同列数据后不同大写字母表示在0.01水平差异显著。 |
