Restricting conservation and cryopreservation are two main methods of plant germplasm in vitro preservation.
限制生长保存和超低温保存是植物种质离体保存的两种主要方法。
A botanical garden is an important multifunctional institution for scientific research, preservation of plant germplasm and education.
植物园是集科学研究、植物种质保存和科学教育等综合性功能为一体的重要场所。
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