黄精种子休眠的研究进展

Seeds Dormancy of Polygonatum sibiricum Red.: Research Progress

黄精具有很高的药用价值,近几年更受关注。其传统繁殖方式为根茎繁殖,成本高且易产生品种退化。种子繁殖受到关注,但黄精种子具有休眠性,发芽率低。为了打破黄精种子休眠,解决黄精人工育种栽培遭遇的困难,总结了黄精种子休眠类型及原因,包括种子结构、内源抑制物、种胚发育状况、综合因素与种子休眠的关系和打破黄精种子休眠的方法及其机制,包括机械处理、温水浸种处理、层积处理、化学试剂处理、激素处理、萌发温度及光照条件、综合处理,认为黄精种子的休眠是综合因素导致的,可以通过层积和激素处理等方法打破休眠。

Polygonatum sibiricum Red. has great medicinal value which receives increasing attention in recentyears. Traditional rhizome reproduction is not only of high cost but also causes variety degeneration easily.Seeds of Polygonatum sibiricum Red. have dormancy characteristics and low germination rate. To break seeddormancy of Polygonatum sibiricum Red. and solve the problems in its artificial cultivation and breeding, thisarticle summarizes the reasons of seed dormancy, including the relationship between seed structure,endogenous inhibitor, embryo development status, comprehensive factors and seed dormancy, and the methodsof breaking seed dormancy, including mechanical, soaking, stratification, chemical, hormone, germinationtemperature,light condition and comprehensive treatment. It is considered that the seed dormancy of Polygonatum sibiricum Red. is caused by comprehensive factors, seed dormancy can be broken down bystratification and hormone treatment.