干旱区生态环境知识资源中心(Arid): Diversity and distribution of physical dormant species in relation to ecosystem and life-forms

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DOI	10.14719/pst.2017.4.2.293
	Diversity and distribution of physical dormant species in relation to ecosystem and life-forms
	Jaganathan, Ganesh K.; Song, Danping; Liu, Baolin
通讯作者	Jaganathan, GK
来源期刊	PLANT SCIENCE TODAY
ISSN	2348-1900
出版年	2017
卷号	4 期号:2 页码:55-63
英文摘要	Impermeable seed/fruit coat, i.e. physical dormancy (PY) occurring only in several genera of 18 angiosperm families plays an important role in controlling seed persistence and germination timing. It has been theoretically speculated that PY is more prevalent in drylands than in moist vegetation zones, but unequivocal support for this assertion is currently unavailable. The broad objective of this contribution was to examine the distribution of PY on the various vegetation of tropics and temperate ecosystems using a data set of 13, 792 species. The number of species with PY in tropics (19%) is higher than the number of PY species in the temperate ecosystem (15%). However, in both tropics and temperate, there is a clear trend that PY is less common in moist and low-temperature vegetation zones compared with dry and high-temperature vegetation. In tropics, PY is more prevalent in dry woodlands (33%) and tropical deciduous forests (27.3%) compared with the evergreen rain forest (9%). Similarly, in the temperate zone, dry vegetation with seasonal rainfall such as Matorral (22.3) and deserts (19.5%) have a higher number of PY species compared with moist warm woodlands (8.1%) and deciduous forest (9%). Although PY is a trait found in various life-forms, it appears to be less common in trees, particularly of the temperate zone. We discuss the ecological adaptation of PY in the dry ecosystem and consider the mechanism of persistence and dormancy break in PY and physiological dormant (PD) species.
英文关键词	Adaptation dry ecosystem germination impermeable seed coat persistence
类型	Review
语种	英语
开放获取类型	Green Published, Other Gold
收录类别	ESCI
WOS记录号	WOS:000449596400001
WOS关键词	SOUTH-WESTERN AUSTRALIA ; SEED WATER-CONTENT ; DESICCATION TOLERANCE ; TROPICAL FOREST ; BURIED SEEDS ; ECOLOGICAL SIGNIFICANCE ; RECALCITRANT SEEDS ; HARD-SEEDEDNESS ; GERMINATION ; LONGEVITY
WOS类目	Plant Sciences
WOS研究方向	Plant Sciences
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/332621
作者单位	[Jaganathan, Ganesh K.; Song, Danping; Liu, Baolin] Univ Shanghai Sci & Technol, Dept Biothermal Engn, Shanghai 200093, Peoples R China
推荐引用方式 GB/T 7714	Jaganathan, Ganesh K.,Song, Danping,Liu, Baolin. Diversity and distribution of physical dormant species in relation to ecosystem and life-forms[J],2017,4(2):55-63.
APA	Jaganathan, Ganesh K.,Song, Danping,&Liu, Baolin.(2017).Diversity and distribution of physical dormant species in relation to ecosystem and life-forms.PLANT SCIENCE TODAY,4(2),55-63.
MLA	Jaganathan, Ganesh K.,et al."Diversity and distribution of physical dormant species in relation to ecosystem and life-forms".PLANT SCIENCE TODAY 4.2(2017):55-63.