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 愈伤组织诱导及增殖
图1 铁兰无菌苗叶片诱导愈伤组织悬浮培养再生过程A:无菌苗叶片基部分化胚性愈伤组织;B:分离的愈伤组织增殖;C:胚性愈伤组织悬浮初期;D:胚性愈伤组织悬浮培养增殖形成大的胚团块及少量分散的胚(中间部分);E:单个胚的形态;F:畸形胚;G:单个胚萌发形成不定芽;H:胚团块诱导初期形态;I:胚团块萌发不定芽丛;J:切分的小芽丛壮苗培养;K:不定芽诱导生根;L:生根不定芽移栽成活。 Fig. 1 Regeneration of T. cyanea through callus induction from leaf and suspension of callus A: Embryonic callus induced from the base of in vitro leaf; B: Propagation of embryonic callus; C: Early stage of the suspension cultures; D: Embryo mass and embryos formed during the embryonic callus suspension culture; E: Form of the embryos; F: Malformed embryos; G: Adventitious bud developed from single embryo; H: Form of embryo mass after germination induction; I: Tufted adventitious buds developed from embryo mass; J: Separated bud; K: Rooted buds; L: Transplanted plantlets. |
表1 铁兰无菌苗叶片愈伤组织诱导结果Tab. 1 Callus induction of T. cyanea from in vitro leaf |
| 6-BA/ (mg·L-1) | NAA/ (mg·L-1) | 接种块数 Number of explants | 出愈伤组织的块数 Number of callus | 愈伤组织诱导率 Induction ratio/% |
|---|---|---|---|---|
| 2.0 | 0.02 | 50 | 48 | 96 |
| 2.5 | 0.02 | 50 | 49 | 98 |
| 3.0 | 0.02 | 50 | 46 | 92 |
2.2 胚性愈伤组织液体振荡
表2 铁兰胚性愈伤组织悬浮培养成胚及增殖效果Tab. 2 Propagation and embryos formation of the embryonic callus from T. cyanea |
| 2,4-D/ (mg·L-1) | KT/ (mg·L-1) | 平均每代增殖体积Volume increment/mL | 平均每个周期增殖系数Multiplication |
|---|---|---|---|
| 0.1 | 0 | — | — |
| 0.3 | 0 | — | — |
| 0.5 | 0 | — | — |
| 0.1 | 0.01 | 2.9 | 3.0b |
| 0.1 | 0.03 | 3.1 | 3.3b |
| 0.1 | 0.05 | 3.1 | 3.3b |
| 0.3 | 0.01 | 3.2 | 3.5bc |
| 0.3 | 0.03 | 3.2 | 3.8bc |
| 0.3 | 0.05 | 3.7 | 5.0c |
| 0.5 | 0.01 | 1.2 | 1.4a |
| 0.5 | 0.03 | 1.3 | 1.4a |
| 0.5 | 0.05 | 1.4 | 1.6a |
Note: Different lowercase letters in the same column mean significant differences (p<0.05). | |
注:同列不同小写字母表示差异显著(p<0.05)。 |
2.3 胚状体的萌发
表3 铁兰胚状体萌发效果分析Tab. 3 Embryos ermination of T. cyanea |
| 6-BA/ (mg·L-1) | NAA/ (mg·L-1) | 胚块萌发率 Germination rate of embryo piece/% | 胚萌发率 Germination rate of embryos/% |
|---|---|---|---|
| 0.1 | 0.05 | 30a | 11a |
| 0.5 | 0.05 | 50b | 23ab |
| 1.0 | 0.05 | 82c | 32b |
| 2.0 | 0.05 | 80c | 55c |
| 0.1 | 0.02 | 42a | 21a |
| 0.5 | 0.02 | 64b | 32b |
| 1.0 | 0.02 | 96c | 57c |
| 2.0 | 0.02 | 96c | 56c |
| 0.1 | 0.01 | 40a | 39b |
| 0.5 | 0.01 | 62b | 43b |
| 1.0 | 0.01 | 100c | 90c |
| 2.0 | 0.01 | 100c | 81c |
Note: Different lowercase letters in the same column mean significant differences (p<0.05). | |
注:同列不同小写字母表示差异显著(p<0.05)。 |
2.4 壮苗及生根
表4 铁兰不定芽生根诱导效果Tab. 4 Rooting of the adventitious shoots from T. cyanea |
| 基本培养基 Basal medium | IBA/ (mg·L-1) | NAA/ (mg·L-1) | 接种不定芽数 Number of explants | 生根率 Rooting rate/% | 状态 Status of seedlings |
|---|---|---|---|---|---|
| MS | 0.5 | 0 | 50 | 52c | 芽小,根粗壮,根毛少 |
| MS | 0.5 | 0.5 | 50 | 39ab | 芽略高,根粗壮,根毛正常 |
| MS | 0.5 | 1.0 | 50 | 42b | 芽较高,根正常 |
| MS | 0.5 | 1.5 | 50 | 43b | 芽高,根较细弱 |
| 1/2 MS | 0.5 | 0 | 50 | 30a | 芽小,根粗壮,根毛少 |
| 1/2 MS | 0.5 | 0.5 | 50 | 41ab | 芽略高,根粗壮,根毛正常 |
| 1/2 MS | 0.5 | 1.0 | 50 | 47c | 芽较高,根正常 |
| 1/2 MS | 0.5 | 1.5 | 50 | 48c | 芽高,根细弱 |
Note: Different lowercase letters in the same column mean significant differences (p<0.05). | |
注:同列不同小写字母表示差异显著(p<0.05)。 |
