植物研究 ›› 2025, Vol. 45 ›› Issue (6): 888-897.doi: 10.7525/j.issn.1673-5102.2025.06.006
• 研究论文 • 上一篇
许云博1, 张恒1, 刘彩霞2, 王萌1, 刘宇航1, 王秋宇1, 买明远1, 曲冠证1(
)
收稿日期:2025-08-29
出版日期:2025-11-20
发布日期:2025-11-27
通讯作者:
曲冠证
E-mail:gzqu@nefu.edu.cn
作者简介:许云博(2001—),女,硕士研究生,主要从事林木遗传育种研究。
基金资助:
Yunbo XU1, Heng ZHANG1, Caixia LIU2, Meng WANG1, Yuhang LIU1, Qiuyu WANG1, Mingyuan MAI1, Guanzheng QU1(
)
Received:2025-08-29
Online:2025-11-20
Published:2025-11-27
Contact:
Guanzheng QU
E-mail:gzqu@nefu.edu.cn
摘要:
与传统育种相比,双单倍体(doubled haploid,DH)诱导技术能够有效缩短纯合系的育种周期,在短时间快速获得林木纯合系。由于林木单倍体诱导困难,难以建立规模化的遗传群体,因此,目前关于林木DH群体遗传变异的研究鲜有报道。该研究以小黑杨亲本和4个DH系为材料,对其生长性状、叶片表型和解剖学特征开展测定与统计分析,结果显示:不同DH系存在明显的生长缺陷,DH系的株高、地茎、茎节数量、叶长、叶宽、叶面积等指标均显著低于亲本。顶芽解剖结构分析结果显示,亲本与DH顶端分生组织生长点存在差异;茎部石蜡切片及组织染色观察分析显示,DH系的形成层数量较少,单个导管细胞平均面积小,而导管和纤维细胞数量均极显著高于亲本。该研究结果表明,DH植株在次生生长方面存在缺陷,可为后续研究特定基因功能解析和育种策略优化提供材料基础。
中图分类号:
许云博, 张恒, 刘彩霞, 王萌, 刘宇航, 王秋宇, 买明远, 曲冠证. 小黑杨双单倍体生长性状及解剖结构分析[J]. 植物研究, 2025, 45(6): 888-897.
Yunbo XU, Heng ZHANG, Caixia LIU, Meng WANG, Yuhang LIU, Qiuyu WANG, Mingyuan MAI, Guanzheng QU. Analysis of Growth Traits and Anatomical Structures of Doubled Haploid Lines of Populus simonii × P. nigra[J]. Bulletin of Botanical Research, 2025, 45(6): 888-897.
表1
小黑杨亲本及不同DH系第5~8片叶表型
亲本及双单 倍体无性系 DT and DH lines | 第5片叶 The fifth leaf | 第6片叶 The sixth leaf | 第7片叶 The seventh leaf | 第8片叶 The eighth leaf | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
叶长 Leaf length /cm | 叶宽 Leaf width /cm | 叶长宽比 Leaf aspect ratio | 叶长 Leaf length /cm | 叶宽 Leaf width /cm | 叶长宽比 Leaf aspect ratio | 叶长 Leaf length /cm | 叶宽 Leaf width /cm | 叶长宽比 Leaf aspect ratio | 叶长 Leaf length /cm | 叶宽 Leaf width /cm | 叶长宽比 Leaf aspect ratio | |
| DT | 7.03±1.93a | 6.33±2.72a | 1.19±0.27b | 7.27±1.88a | 7.20±2.43a | 1.03±0.11b | 8.43±0.32a | 8.30±0.36a | 1.02±0.04d | 9.13±0.35a | 8.47±0.23a | 1.08±0.02c |
| DH1588 | 2.67±0.15bc | 2.47±0.58b | 1.12±0.24b | 3.20±0.10b | 3.30±0.17bc | 0.97±0.08b | 2.87±0.67c | 2.90±0.52bc | 0.98±0.06d | 2.90±0.26c | 2.50±0.10c | 1.16±0.07bc |
| DH3-50 | 4.50±0.61b | 3.57±0.49b | 1.26±0.03ab | 4.20±0.70b | 3.87±0.49b | 1.08±0.06b | 4.37±0.58b | 3.53±0.55b | 1.24±0.04c | 4.83±0.55b | 3.97±0.12b | 1.22±0.13bc |
| DH1717 | 3.63±0.81bc | 2.53±0.61b | 1.44±0.03ab | 3.40±0.44b | 2.07±0.21bc | 1.66±0.30a | 3.73±0.47bc | 2.60±0.35c | 1.44±0.04b | 3.63±0.40c | 2.70±0.26c | 1.34±0.03b |
| DH1716 | 2.23±0.32c | 1.43±0.23b | 1.56±0.05a | 2.37±0.15b | 1.50±0.30c | 1.61±0.22a | 3.53±0.15bc | 2.17±0.31c | 1.65±0.18a | 3.73±0.47c | 2.33±0.45c | 1.62±0.20a |
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