低度的2,4-D对增强棕 (Phoenix dactylifera L.) 的间接胚胎生成和遗传稳定性的影响
Ammar M A Ali1,2, Ahmed A Qahtan3, Jameel M Al-Khayri4
1Department of Biology, Faculty of Education, Hajjah University, Hajjah, Yemen. ammarsood21@gmail.com.
Scientific reports
|December 2, 2025
概括
低度的2,4-二基酸 (2,4-D) 显著改善了枣树的诱导和再生. 这种优化的间接体质胚胎生成 (ISE) 协议确保了枣树微繁殖的遗传稳定性.
科学领域:
- 植物生物技术 植物生物技术
- 园艺科学 园艺科学
- 植物生理学 植物生理学
背景情况:
- 枣树 (Phoenix dactylifera L.) 的微传播对于有效的作物改善和传播至关重要.
- 间接体质胚胎发生 (ISE) 为枣树的大规模繁殖提供了一个有前途的途径.
- 优化植物生长调节剂 (PGRs) 对于增强感应和体胚胎发育至关重要.
研究的目的:
- 为了评估不同度的2,4-二二酸 (2,4-D) 对巴里枣树中的诱导和随后的体质胚胎发生的影响.
- 建立一个高效和基因稳定的ISE系统,用于枣树微繁殖.
- 评估从优化协议中获得的再生剂的遗传忠实性.
主要方法:
- 巴尔希枣树的射出尖端扩展品是在MS基质上培养的,补充了不同度的2,4-D (10 mg/L和50 mg/L) 和2iP (3 mg/L).
- 诱导calli使用不同的植物生长调节剂 (PGR) 配方进行间接体质胚胎生成 (ISE).
- 使用简单间序列重复 (ISSR) 标记物分析了再生剂的遗传稳定性.
主要成果:
- 与较低的2,4-D (10 mg/L) 诱导的与高的2,4-D (50 mg/L) 相比,表现出显著更高的形态性能力,新鲜体重,体质胚胎形成和再生能力.
- 低2,4-D治疗的再生体显示出优异的芽发芽,芽生殖,芽延长,根诱导和根延长.
- 幼苗实现了88.5%的适应生存率,ISSR分析证实了再生剂中97.5%的遗传忠诚度.
结论:
- 2,4-D (10 mg/L) 的较低度是最佳的,可以增强的活力,器官生成,以及枣树ISE的整体效率.
- 开发的ISE协议具有高效性和基因稳定性,适合大规模的枣树微繁殖.
- 优化的PGR度对于成功的枣树再生和遗传完整性至关重要.
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