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牡丹种子休眠与萌发综述 预览

A Review of Peony Seed Dormancy and Germination
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摘要 牡丹为我国的传统名花,除具有观赏价值外,还是传统中药材中重要的天然药物来源。本文对牡丹种子的休眠与萌发进行了综述,如大多数牡丹都有深度简单上胚轴形态生理休眠的特性;牡丹的种胚分化但发育不完全;种胚必须达到一定的长度,胚根才能突破种皮;牡丹种子的萌发需要经历暖层积打破种胚的形态休眠和胚根的生理休眠;上胚轴的生长需要冷层积,且只有胚根生长到一定的阈值,上胚轴才对低温敏感;赤霉素可以代替层积,促进种胚的生长和休眠的打破。最后,针对国内外的研究不足进行了探讨,并对未来需要进一步开展的研究工作进行了展望。 Peony is a famous traditional flower in China.In addition to its ornamental value,it is also an important source of natural medicine in traditional Chinese medicine.In this paper,the dormancy and germination of peony seeds were reviewed.For example,most peony have the characteristics of deep simple epicotyl morphological physiological dormancy.The embryos of peony are differentiated but not fully developed.The embryo must reach a certain length and the radicle can break through the seed coat.The germination of peony seeds needs to undergo warm stratification to break the morph-ological dormancy of the embryo and the physiological dormancy of the radicle.The growth of the epicotyls requires cold lamination,and only the radicle grows to a certain threshold,and the hypocotyl is sensitive to low temperatures.Gibberellin can replace stratification and promote the growth of embryos and the break of dormancy.At last,the research shortages at home and abroad were discussed,and the research work that needs further research in the future was prospected.
作者 潘昊磊 赵毅 石文昊 许天琪 金泽阳 PAN Hao-lei;ZHAO Yi;SHI Wen-hao;XU Tian-qi;JIN Ze-yang(Jiangsu Key Laboratory of Crop Genetics and Physiology,College of Horticulture and Plant Protection,Yangzhou University,Yangzhou Jiangsu 225009)
出处 《现代农业科技》 2019年第20期128-129,131共3页 Modern Agricultural Science and Technology
基金 国家自然科学基金项目(31800340) 2018年扬州大学大学生科创基金项目(x20180545) 2019年扬州大学创新创业训练计划项目(131100226)。
关键词 牡丹 种子休眠 种子萌发 peony seed dormancy seed germination
作者简介 通信作者:金泽阳.
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