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Bulletin of Botanical Research ›› 2022, Vol. 42 ›› Issue (4): 688-693.doi: 10.7525/j.issn.1673-5102.2022.04.018

• Physiology and Ecology • Previous Articles     Next Articles

The Germination Characteristics and Dormancy Type of the Seed of Castanopsis sclerophylla

Xingui LE1, Zhengwei WANG2, Xin NING2, Xiqing SUN2,3, Yigang SONG2()   

  1. 1.Jiangxi Yangjifeng National Nature Researve,Guixi 335400
    2.Eastern China Conservation Centre for Wild Endangered Plant Resources,Shanghai Chenshan Botanical Garden,Shanghai 201602
    3.Youth practice education Base of Minhang District,Shanghai 201111
  • Received:2021-09-03 Online:2022-07-20 Published:2022-07-15
  • Contact: Yigang SONG E-mail:ygsong@cemps.ac.cn
  • About author:LE Xingui(1973—),male,postgraduate,senior forestry engineer,mainly engaged in forest protection and management.
  • Supported by:
    National Natural Science Foundation of China(31901217);National Important Wild Plant Germplasm Resource Bank,Shanghai Chenshan Botanical Garden Branch(ZWGX2005)


The seed germination is an inherent property that plant adopt to environmental changes and the study of seed germination would help us to understand the population regeneration and seedling nursery. This study aimed to elucidate the type of seed dormancy and seed germination characteristics of Castanopsis sclerophylla, an important resource plant in China, the results showed that ①a very high proportion of the fruits was the seeds; ②the water absorption of the seeds was limited by the pericarp; ③seed germination was impeded by the pericarp, and seeds germinated in a wide temperature range after the pericarp removed;④the germination of seeds was difficult at15/5℃ or 20/10℃, but the germination was rapid at 25/15 ℃, 30/20 ℃ and 35/25 ℃ respectively. The results indicate that the diaspore(fruit) of C. sclerophylla had physical dormancy(PD), Fagaceae is a new recorded family with PD and dehydration sensitivity. The results also support the hypothesis that PD is a relatively evolved trait.

Key words: recalcitrant seeds, physical dormancy, fagaceae, seed dormancy release

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