6种草本药用植物种子超低温保存技术研究

Chinese Journal of Tropical Crops(2017)

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Abstract
以草本药用植物杜若、过江藤、夏枯草、皱果苋、罗勒和山香的成熟种子为材料,探讨了含水量和冷冻方法对种子超低温保存的影响.结果表明,经液氮超低温冷冻后,6种草本药用植物种子发芽率较对照组均有显著差异(p<0.05);适宜的含水量下,种子经过超低温冷冻后其发芽率甚至高于对照组.3种冷冻方法中,玻璃化冷冻法更适合过江藤和山香种子的超低温保存,缓慢冷冻法更适合皱果苋、杜若和夏枯草种子的超低温保存,直接冷冻法适合于杜若和罗勒种子的超低温保存.所以,液氮超低温冷冻法保存杜若等6种草本药用植物种子是可行的;含水量对超低温保存前后夏枯草、山香和罗勒种子的发芽率影响显著.
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Key words
Cryopreservation,medicinal herbs,vitrification,moisture content
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