Seed germination of the invasive species Piper aduncum as influenced by high temperature and water stress
Seed germination of the invasive species Piper aduncum as influenced by high temperature and water stress
复制标题
高温和水分胁迫影响入侵物种胡椒种子萌发
DOI：
10.1111/wre.12134
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发表时间：
2015-04
期刊：
影响因子：
1.7
通讯作者：
Ji Mingyue
中科院分区：
文献类型：
--
作者：
Xue Peng;Zhang Nan;Yan Qi;Ji Mingyue
胡椒是热带地区常见的木本杂草，也是许多地区的成功入侵者。由于该物种通常主宰路边和森林边缘，并且这些栖息地经常经历温度和水资源供应的极端变化，因此了解种子如何适应这些压力非常重要。本研究调查了高温和水分胁迫（连续、周期性或短暂）对吸胀前或吸胀后 P.aduncum 种子萌发的影响。结果发现，P.aduncum种子仅表现出中等耐受性，并且在温度高于35℃或水势低于-0.6MPa时不发芽。但该品种因地制宜，果实雨季成熟，种子耐干湿eRH 8%，潮湿条件下快速发芽，耐温高于最高地温，大多数种子经过60小时连续热处理或每日定期40℃热处理5小时即可发芽，整个发芽过程对40℃12小时热处理不敏感。赤松对高温和水分胁迫的中等耐受性，结合西双版纳当地的环境条件，使得赤松在该地区属于中等入侵者。
Piper aduncum is a common woody weed throughout the tropics and a successful invader in many areas. As this species most often dominates roadsides and forest margins, and these habitats frequently experience extreme changes in temperature and water availability, it is important to understand how the seeds adapt to these stresses. This study investigated the effect of high temperatures and water stress, continuous, periodic or transient, on P.aduncum seed germination before or after imbibition. It was found that P.aduncum seeds exhibited only intermediate tolerance and did not germinate at temperatures above 35 degrees C or water potentials below -0.6 MPa. However, this species is well adapted to local conditions, with fruit ripening in the rainy season, seed desiccation tolerance to eRH 8%, rapid germination under wet conditions, higher temperature tolerance than the maximum ground temperature, germination of most seeds after 60h continuous heat treatment or daily periodic heat treatments up to 5h at 40 degrees C and insensitivity to 12h heat treatment at 40 degrees C during the whole germination process. The intermediate tolerance to high temperature and water stress of P.aduncum, in combination with local environmental conditions in Xishuangbanna, makes P.aduncum an intermediate invader in this area.
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DOI：
10.1614/ws-04-100r1
发表时间：
2005-02
期刊：
--
影响因子：
--
作者：
Jingkai Zhou;E. Deckard;W. Ahrens
通讯作者：
Jingkai Zhou;E. Deckard;W. Ahrens
中国云南南部海拔和纬度范围内的热带季节性雨林
DOI：
--
发表时间：
2004
期刊：
Gardens’ Bull. Singapore
影响因子：
--
作者：
Zhu H.
通讯作者：
Zhu H.
影响因子：
1.4
作者：
H. M. Rogers;A. Hartemink
通讯作者：
H. M. Rogers;A. Hartemink
影响因子：
2.5
作者：
Gealy, DR;Wailes, EJ;Chavez, RSC
通讯作者：
Chavez, RSC
DOI：
10.1614/ws-06-184
发表时间：
2007-05
期刊：
--
影响因子：
--
作者：
J. Norsworthy;M. J. Oliveira
通讯作者：
J. Norsworthy;M. J. Oliveira