冷保存和成熟媒介优化,以增强马森松 (Pinus massoniana) 的体质胚胎发生
Qian Yang1,2, Ying Lin1,2, You-Mei Chen1,2
1Collaborative Innovation Center of Sustainable Forestry in Southern China, Nanjing 210037, China.
Plants (Basel, Switzerland)
|June 13, 2025
概括
低温保存有效地保护了马森松树的胚胎潜力,使其能够抵抗疾病的繁殖. 优化的成熟和移植协议可以提高体质胚胎的发育和幼苗的存活率,从而抵御松病.
科学领域:
- 植物生物技术 植物生物技术
- 林业科学 林业科学
- 植物病理学 植物病理学
背景情况:
- 松松 (Pinus massoniana) 对于中国南部的植林至关重要,但受到松病 (PWD) 的威胁.
- 加速对PWD耐药性的繁殖对于森林的保护和健康至关重要.
研究的目的:
- 为了研究冷保存对胚胎的容量的影响.
- 为了优化体质胚胎的成熟和发芽,使用酸 (ABA),聚乙烯甘醇8000 (PEG8000) 和植物凝.
- 评估移植基质的再生幼苗的存活和生长.
主要方法:
- 在 -196 °C 的胚胎性的冷保存.
- 系统优化ABA,PEG 8000和植物凝的度,用于体质胚胎生成.
- 评估不同基于土壤和基于残留的移植基质.
主要成果:
- 低温保存保持了胚胎的潜力,在解后产生了明显更多的体质胚胎 (38.4/毫升),而不是亚培养的 (13.2/毫升).
- 优化条件包括6mg/L ABA,130g/L PEG 8000和3.5g/L植物凝,最大限度地提高胚胎的生长和发芽 (29.8%).
- 土壤和白石基质导致小苗生存率最高 (56.5%) 和生长率最高 (22.3厘米高).
结论:
- 冷保存有效地保护了梅森松的胚胎潜力.
- 对体质胚胎成熟和发芽的优化协议促进了大规模传播.
- 成功的幼苗再生和建立协议支持PWD耐药的繁殖和生殖细胞的保护.
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