植物生态学报 ›› 2023, Vol. 47 ›› Issue (12): 1611-1628.DOI: 10.17521/cjpe.2022.0336

• 综述 •    下一篇

荒漠一年生植物异时萌发研究进展

迪力夏旦木·塔什买买提1,2, 刘会良1,3,4,*()   

  1. 1荒漠与绿洲生态国家重点实验室, 干旱区生态安全与可持续发展重点实验室, 中国科学院新疆生态与地理研究所, 乌鲁木齐 830011
    2中国科学院大学, 北京 100049
    3新疆干旱区生物多样性保育与应用重点实验室, 中国科学院新疆生态与地理研究所, 乌鲁木齐 830000
    4天山野果林生态系统新疆野外科学观测研究站, 伊犁植物园, 中国科学院新疆生态与地理研究所, 新疆新源 835800
  • 收稿日期:2022-08-18 接受日期:2023-02-20 出版日期:2023-12-20 发布日期:2023-03-01
  • 通讯作者: *(liuhuiliang@ms.xjb.ac.cn)
  • 基金资助:
    第三次新疆综合科学考察项目(2022xjkk1503);国家自然科学基金(32160256);32171513和31971428(32171513);32171513和31971428(31971428)

Review of research on germination heterochrony of desert annual plants

Dilixiadanmu TASHENMAIMAITI1,2, LIU Hui-Liang1,3,4,*()   

  1. 1State Key Laboratory of Desert and Oasis Ecology, Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi 830011, China
    2University of Chinese Academy of Sciences, Beijing 100049, China
    3Xinjiang Key Laboratory of Biodiversity Conservation and Application in Arid Lands, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Ürümqi 830000, China
    4Xinjiang Field Scientific Observation Research Station of Tianshan Wild Fruit Forest Ecosystem, Yili Botanical Garden, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Xinyuan, Xinjiang 835800, China
  • Received:2022-08-18 Accepted:2023-02-20 Online:2023-12-20 Published:2023-03-01
  • Contact: *(liuhuiliang@ms.xjb.ac.cn)
  • Supported by:
    Third Xinjiang Scientific Expedition Program(2022xjkk1503);National Natural Science Foundation of China(32160256);National Natural Science Foundation of China(32171513);National Natural Science Foundation of China(31971428)

摘要:

荒漠一年生植物在严峻的环境条件下形成其特殊的萌发时间格局, 即种子异时萌发: 在特定条件下, 同胞种子群形态一致的部分种子可以即时萌发, 而另一部分仍保留在种子库中的现象。目前对荒漠一年生植物的异时萌发研究多集中在种子萌发特性、萌发后性状及繁殖分配等方面。该文系统总结了国内外种子异时萌发性的研究工作, 主要内容包括: 1)种子异时萌发的概念; 2)具有异时萌发性的一年生植物种类及分布; 3)异时萌发对植物生活史类型及模式的影响; 4)异时萌发的植株在表型响应上的不同, 如存活率、物候特征、繁殖产量、生物量分配等; 5)异时萌发的生物学和环境因素。在综述文献的基础上, 对今后的研究进行了展望, 这有助于从更深层面理解荒漠一年生植物的异时萌发特性及其适应机制。

关键词: 萌发时间, 春季萌发, 秋季萌发, 生活史, 兼性冬季一年生植物

Abstract:

Desert annuals develop their special germination time pattern under severe environmental conditions, called germination heterochrony. It refers to the phenomenon that under specific conditions, a portion of the sibling seed population with uniform morphology can germinate instantly, while the other portion remains in the seed bank. Most existing studies on germination heterochrony of desert annuals have focused on seed germination characteristics, post-germination traits, and reproductive allocation. We reviewed and analyzed recent advances in germination heterochrony research, with emphases on 1) conception of germination heterochrony; 2) species and distribution of annual plants with heterochronous germination; 3) effects of heterochronous germination on plant life history types and patterns; 4) differences in phenotypic response, such as survival rate, phenological characteristics, reproductive yield, and biomass allocation, among plants that germinate at different times; 5) biological and environmental factors of germination heterochrony. Based on the review of literature, the future research is expected to contribute to a deeper understanding of germination heterochrony and adaptive mechanisms of desert annuals.

Key words: germination time, spring germination, autumn germination, life history, facultative winter annuals