麻疯树种子的发育、萌发和脱水耐性的初步研究  

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

作　　者：邓志军[1] 向振勇[1] 程红焱[2] 李燕军[1] 宋松泉[1] 

机构地区：[1]中国科学院西双版纳热带植物园,云南勐腊666303 [2]中国科学院植物研究所,北京100093

出　　处：《云南植物研究》2008年第3期355-359,共5页Acta Botanica Yunnanica

基　　金：中国科学院知识创新工程重要方向性项目(KZCX2-YW-414)

摘　　要：研究了麻疯树种子的形态和萌发能力的变化,温度和光照对种子萌发的影响以及种子脱水耐性的变化。结果表明:麻疯树种子在开花后58d达到生理成熟期,此时种子的萌发率达到最大值;生理成熟期种子的适宜萌发温度范围为25～30℃,对脱水不敏感,且光照对种子的萌发率无显著影响。因此麻疯树种子是一种光中性的正常性种子。The developmental changes in morphology and genninability 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.

关 键 词：脱水耐性 萌发能力 麻疯树种子 光照 正常性种子 温度 

分 类 号：Q945[生物学—植物学]