Plant Diversity ›› 2008, Vol. 30 ›› Issue (03): 355-359.DOI: 10.3724.SP.J.1143.2008.07196

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Preliminary Study on Development , Germination and Desiccation Tolerance of Jatropha curcas (Euphorbiaceae)

DENG Zhi-Jun1, XIANG Zhen-Yong1, 3 , CHENG Hong-Yan2, LI Yan-Jun1, SONG Song-Quan1, 2   

  1. 1 Xishuangbanna Tropical Botanical Garden , Chinese Academy of Sciences , Mengla 666303 , China ;
    2 Institute of Botany , Chinese Academy of Sciences, Beijing 100093, China ;
    3 College of Landscape and Gardening , Yunnan Agricultural University, Kunming 650201 , China
  • Received:2007-09-09 Online:2008-06-25 Published:2008-06-25

Abstract: The developmental changes in morphology and germinability of Jatropha curcas seeds, effects of temperature and light on seed germination , and changes in desiccation tolerance of mature seeds were studied in this paper. The results indicated that J. curcas seeds reached a physiological maturation at 58 days after anthesis, and that seed germination percentage reached a peak at physiological maturation, and then decreased. The optimal germination temperature was 25 to 30℃. J. curcas seeds were insensitive to dehydration at physiological maturation . There was not a notable effect of light on seed germination. Therefore, J. curcas seed was a non-photoblastic and orthodox seeds .

Key words: Desiccation tolerance

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