白木香种子脱水耐性的发育变化及贮藏特性

doi:10.3724/SP.J.1143.2011.10190

Plant Diversity ›› 2011, Vol. 33 ›› Issue (4): 458-464.DOI: 10.3724/SP.J.1143.2011.10190

• 研究论文 • 上一篇

白木香种子脱水耐性的发育变化及贮藏特性

张丽霞1, 兰芹英2, 李海涛1, 谭运洪2, 管燕红1, 李学兰1

1 中国医学科学院药用植物研究所云南分所，云南景洪666100；
2 中国科学院西双版纳热带植物园，云南勐腊666303

收稿日期:2010-11-02 出版日期:2011-08-25 发布日期:2011-04-15
基金资助:
云南省科技计划项目（2008IF018）

Developmental Changes in Relation to Desiccation Tolerance and Storage Characteristics of Aquilaria sinensis (Thymelaeaceae) Seeds

ZHANG Li-Xia-1, LAN Qin-Ying-2, LI Hai-Tao-1, TAN Yun-Hong-2, GUAN Yan-Hong-1, LI Xue-Lan-1

1 Institute of Medicinal Plant Development Yunnan Branch, Chinese Academy of Medical Sciences, Jinghong 666100, China;
2 Xishuangbanna Tropical Botannical Garden, Chinese Academy of Sciences, Mengla 666303, China

Received:2010-11-02 Online:2011-08-25 Published:2011-04-15

摘要/Abstract

摘要：

研究白木香种子发育进程中种子性状、萌发能力和脱水耐性的变化，以及不同光温条件对种子萌发的影响和种子的贮藏特性。结果表明：白木香种子在花后78d获得最大干重，进入生理成熟期，此时萌发率接近最大值；胚在花后57~85d，脱水耐性逐渐增强，并在花后85d获得最大脱水耐性。种子萌发的适宜温度范围为25℃~35℃，光照对种子萌发有一定的抑制作用。新鲜白木香种子（含水量27.45%）在4℃低温条件下贮藏1个月后萌发率仅为30%左右，而含水量7.38% 的干燥种子在4℃低温条件下贮藏120d，萌发率仍有53.33%，因此，4℃低温和适度脱水有利于种子短期贮藏。白木香种子能忍耐一定程度的脱水，但干燥至含水量7.50%以下时种子会发生损伤，因此推测白木香种子是一种中间性种子。

关键词: 白木香, 种子发育, 脱水耐性, 种子萌发, 贮藏特性

Abstract:

The seed traits, germinability and desiccation tolerance at different developing periods of Aquilaria sinensis seeds were studied in the present paper, the seed storage characteristics and effects of light and temperature on seed germination were investigated too. The results indicated that A.sinensis seeds reached the physiological maturation and got the maximum dryweight at 78d after anthesis, and seed germination percentage reached a peak at this period. Desiccation tolerance of embryos increased gradually from 57 to 85 days after anthesis and reached the maximum at 85d after anthesis. The optimal germination temperature was 25℃ to 35℃ and seed germination was inhibited by light in a certain degree. The germination percentage of A.sinensis seeds was only about 30% after stored in 4℃ for 30d when seed moisture content is 27.45%. However, the germination percentage was 53.33% after stored in 4℃ for 120d when dehydrated to the moisture content of 7.38%. Consequently, low temperature and reasonable dehydration were more suitable for seed shorttime storage. A.sinensis seeds could suffer dehydration in a certain degree, but the seed will damaged when dehydrated to the moisture content of 7.50%. Thus, A.sinensis seeds exhibited intermediate seed storage behavior.

Key words: Aquilaria sinensis, Seed development, Desiccation tolerance, Seed germination, Storage Characteristics

中图分类号:

Q 945

张丽霞1, 兰芹英2, 李海涛1, 谭运洪2, 管燕红1, 李学兰1. 白木香种子脱水耐性的发育变化及贮藏特性[J]. Plant Diversity, 2011, 33(4): 458-464.

ZHANG Li-Xia-, LAN Qin-Ying-, LI Hai-Tao-, TAN Yun-Hong-, GUAN Yan-Hong-, LI Xue-Lan. Developmental Changes in Relation to Desiccation Tolerance and Storage Characteristics of Aquilaria sinensis (Thymelaeaceae) Seeds[J]. Plant Diversity, 2011, 33(4): 458-464.

参考文献

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白木香种子脱水耐性的发育变化及贮藏特性

Developmental Changes in Relation to Desiccation Tolerance and Storage Characteristics of Aquilaria sinensis (Thymelaeaceae) Seeds

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