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 不同因素对种子萌发和原球茎诱导的影响
图1 不同基本培养基对黑毛石斛×鼓槌石斛种子萌发和原球茎诱导的影响A:杂交种子在1/3 MS+6-BA 0.5 mg/L+NAA 0.3 mg/L+蔗糖20 g/L+马铃薯50 g/L中培养50 d;B:杂交种子在1/2 MS+6-BA 0.5 mg/L+NAA 0.3 mg/L+蔗糖20 g/L+马铃薯50 g/L中培养50 d;C:杂交种子在MS+6-BA 0.5 mg/L+NAA 0.3 mg/L+蔗糖20 g/L+马铃薯50 g/L中培养50 d。 Fig. 1 Effects of different basic media on seed germination and PLBs induction of D. williamsonii × D. chrysotoxum A: Hybrid seeds cultured in 1/3 MS + 6-BA 0.5 mg/L + NAA 0.3 mg/L + sucrose 20 g/L + potato 50 g/L for 50 days; B: Hybrid seeds cultured in 1/2 MS + 6-BA 0.5 mg/L + NAA 0.3 mg/L + sucrose 20 g/L + potato 50 g/L for 50 days; C: Hybrid seeds cultured in MS + 6-BA 0.5 mg/L + NAA 0.3 mg/L + sucrose 20 g/L + potato 50 g/L for 50 days. |
2.2 不同激素配比对原球茎增殖与丛生芽诱导的影响
图2 黑毛石斛×鼓槌石斛组织培养与快速繁殖A:原球茎在1/2 MS+6-BA 1.0 mg/L+NAA 0.2 mg/L+KT 1.0 mg/L+蔗糖25 g/L+碳粉1.0 g/L+马铃薯50 g/L+香蕉50 g/L原球茎增殖与丛生芽诱导培养基上培养10 d;B:原球茎在原球茎增殖与丛生芽诱导培养基上培养25 d;C:原球茎在原球茎增殖与丛生芽诱导培养基上培养50 d;D:组培苗在1/2 MS+6-BA 0.2 mg/L+NAA 0.5 mg/L+花宝1号0.5 g/L+蔗糖25 g/L +碳粉1.0 g/L+马铃薯50 g/L+香蕉50 g/L培养基上生根壮苗培养60 d;E:无菌苗生根效果;F:在松树皮中移栽65 d的生长情况。 Fig. 2 Tissue culture and rapid propagation of D. williamsonii × D. chrysotoxum A: PLBs in 1/2 MS + 6-BA 1.0 mg/L + NAA 0.2 mg/L + KT 1.0 mg/L + sucrose 25 g/L + AC 1.0 g/L + potato 50 g/L + banana 50 g/L medium of protocorm proliferation and shoot induction for 10 days; B: PLBs in medium of protocorm proliferation and shoot induction for 25 days; C: PLBs in medium of protocorm proliferation and shoot induction for 50 days; D: The growth and rooting in 1/2 MS + 6-BA 0.2 mg/L + NAA 0.5 mg/L + hyponex No.1 0.5 g/L + sucrose 25 g/L + AC 1.0 g/L + potato 50 g/L + banana 50 g/L for 60 days; E: Roots growth of aseptic plantlets; F: Plantlets transplanted in the pine bark for 65 days. |
表1 不同浓度激素对原球茎增殖与丛生芽诱导的影响Tab. 1 Effects of different hormone concentrations on proliferation of protocorm and shoot induction |
| 试验编号 Test number | 6-苄氨基 腺嘌呤 6-BA/(mg·L-1) | 萘乙酸 NAA/ (mg·L-1) | 激动素 KT/(mg·L-1) | 增殖系数 Proliferation coefficient |
|---|---|---|---|---|
| W1 | 0.5 | 0.2 | 0.5 | 5.04Ff |
| W2 | 0.5 | 0.5 | 1.0 | 5.14EFf |
| W3 | 0.5 | 0.8 | 1.5 | 5.42Dde |
| W4 | 1.0 | 0.2 | 1.0 | 6.19Aa |
| W5 | 1.0 | 0.5 | 1.5 | 6.05ABb |
| W6 | 1.0 | 0.8 | 0.5 | 5.58CDcd |
| W7 | 1.5 | 0.2 | 1.5 | 5.72BCbc |
| W8 | 1.5 | 0.5 | 0.5 | 5.50CDde |
| W9 | 1.5 | 0.8 | 1.0 | 5.38DEe |
注:同列不同小写字母表示在0.05水平差异显著,不同大写字母表示在0.01水平差异极显著。 | |
Note: Different lowercase letters in the same column indicate significant difference at the 0.05 level, and different uppercase letters indicate extremely significant difference at the 0.01 level. |
2.3 不同激素配比对生根壮苗的影响
表2 不同激素浓度对生根壮苗的影响Tab. 2 Effects of different hormone concentrations on rooting and growth |
| 试验编号 Test number | 萘乙酸 NAA/(mg·L-1) | 6-苄氨基腺嘌呤 6-BA/(mg·L-1) | 花宝一号 Hyponex No.1/(g·L-1) | 生根条数 Root number | 根长 Root length/cm | 生根率 Rooting rate/% | 株高 Plant height/cm |
|---|---|---|---|---|---|---|---|
| T1 | 0.3 | 0.2 | 0.0 | 2.87Cde | 1.98De | 40.89 | 5.94Ab |
| T2 | 0.3 | 0.5 | 0.5 | 3.02BCcde | 2.73CDde | 57.14 | 3.98CDde |
| T3 | 0.3 | 1.0 | 1.0 | 4.05BCbc | 4.61Cc | 80.82 | 5.44Bc |
| T4 | 0.5 | 0.2 | 0.5 | 6.17Aa | 6.46Aa | 100.00 | 7.14Aa |
| T5 | 0.5 | 0.5 | 1.0 | 5.61Bb | 4.82ABab | 93.12 | 5.24BCd |
| T6 | 0.5 | 1.0 | 0.0 | 3.47BCbcde | 3.32Cc | 73.63 | 3.34CDEef |
| T7 | 0.8 | 0.2 | 1.0 | 3.64BCbcd | 3.78Cc | 77.34 | 4.18Cde |
| T8 | 0.8 | 0.5 | 0.0 | 2.85BCcde | 2.80CDde | 50.03 | 2.94Efg |
| T9 | 0.8 | 1.0 | 0.5 | 3.29BCbcde | 3.15CDcd | 57.10 | 2.96DEfg |
注:同列不同小写字母表示在0.05水平差异显著,不同大写字母表示在0.01水平差异极显著。 | |
Note: Different lowercase letters in the same column indicate significant difference at the 0.05 level, and different uppercase letters indicate extremely significant difference at the 0.01 level. |
2.4 移栽驯化培养
表3 移栽65 d后的生长情况Tab. 3 Growth status of plantlets transplanted for 65 days |
| 移栽基质 Transplanting medium | 成活率 Survival rate/% | 株高 Plant height/cm | 生长状况 Growth |
|---|---|---|---|
| 1(松树皮) | 96.32 | 9.67 | 叶色绿色有光泽,茎绿色粗壮,长势良好 |
| 2(水苔) | 76.16 | 6.54 | 叶色少量黄色无光泽,茎浅绿细弱,长势差 |
| 3(椰糠) | 82.24 | 7.44 | 叶色浅绿无光泽,茎浅绿细弱,长势较差 |
| 4(泥炭) | 84.87 | 8.23 | 叶色绿色有光泽,茎绿色较粗壮,长势较好 |
| 5(兰石) | 90.46 | 7.75 | 叶色绿色有光泽,茎浅绿粗壮,长势较好 |
| 6(松树皮∶椰 糠=1∶1) | 88.32 | 8.36 | 叶色绿色有光泽,茎绿色粗壮,长势较好 |
| 7(松树皮∶泥 炭=1∶1) | 92.37 | 8.93 | 叶色绿色有光泽,茎绿色较粗壮,长势良好 |
| 8(松树皮∶兰 石=1∶1) | 96.71 | 9.75 | 叶色绿色有光泽,茎绿色粗壮,长势良好 |
| 9(泥炭∶兰 石=1∶1) | 93.68 | 9.09 | 叶色绿色有光泽,茎绿色粗壮,长势好 |
| 10(泥炭∶椰 糠=1∶1) | 89.32 | 8.61 | 叶色浅绿有光泽,茎绿色粗壮,长势较好 |
