Plant Diversity ›› 2009, Vol. 31 ›› Issue (1): 42-48.DOI: 10.3724 SP.J.1143.2009.08104
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WEN Bin , HE Hui-Ying , WANG Ru-Ling , TAN Yun-Hong , LAN Qin-Ying
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文 彬, 何惠英, 王如玲, 谭运洪, 兰芹英
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Abstract: Seed longevity of Hopea mollissima under ambient conditions and the effects of seed maturity, temperature , illumination and soil moisture content on seed germination were studied in this paper , which indicated that the optimum temperature for seed germination was 25℃ though 20 - 30℃ is suitable; Periodic illumination and full darkness made no significantdifference to germination , but seeds germinated best at temperature range of 25 - 30℃ under periodic illumination, or at temperature range of 20 - 25℃ under full darkness; The suitable soil moisture content was 20%- 60% while the optimum one was 50%- 60%; During open storage under ambient conditions, seed germination percentage halved after 10 days and decreased to nil after 16 days . It appears that this species depended on its native habitat strongly . Deforestation and fragmentation are the key causes which endanger Hopea mollissima severely . Owning to recalcitrant properties of its seeds, the protection of this species relies on in-situ conservation supplemented with ex-situ conservation of living plants .
Key words: Hopea mollissima
摘要: 研究了多毛坡垒( Hopea mollissima) 种子在自然条件下的寿命及成熟度、温度、光照、土壤水分条件对多毛坡垒种子萌发的影响, 结果表明: 多毛坡垒种子适宜萌发的温度范围是20~30℃ , 最适宜温度为25℃ ; 光照对多毛坡垒种子的萌发没有显著性影响, 但在周期性光照条件下以25~30℃萌发结果最好, 全黑暗条件下以20~25℃萌发结果最好; 种子适宜萌发的土壤含水量为20%~60% , 最适含水量为50% ~60% ; 种子成熟后在树上长时间宿存明显降低了种子的发芽率和活力; 在室内自然摊放条件下, 10 天后发芽率减半, 16 天后完全丧失发芽能力。研究认为, 该物种对热带湿性季节性雨林原生境有很强的依赖性, 目前多毛坡垒的濒危状态主要是由于滥砍乱伐和森林破坏造成的, 由于其种子具有顽拗性种子的一些特点, 目前该物种宜采取活体保存的方法, 以就地保护为主, 活植物迁地保护为辅。
关键词: 多毛坡垒, 稀有濒危植物, 顽拗性种子, 萌发, 生理生态特性
CLC Number:
Q 944. 59
WEN Bin , HE Hui-Ying , WANG Ru-Ling , TAN Yun-Hong , LAN Qin-Ying. Physiological and Ecological Characteristics of Seed Germination of Endangered Hopea mollissima (Dipterocarpaceae)[J]. Plant Diversity, 2009, 31(1): 42-48.
文 彬, 何惠英, 王如玲, 谭运洪, 兰芹英 . 濒危植物多毛坡垒种子萌发的生理生态特性[J]. Plant Diversity, 2009, 31(1): 42-48.
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URL: https://www.integrativebiology.ac.cn/pd/EN/10.3724 SP.J.1143.2009.08104
https://www.integrativebiology.ac.cn/pd/EN/Y2009/V31/I1/42