Habitat-linked temperature requirements for fruit germination in Quercus species: A comparative study of Quercus subgenus Cyclobalanopsis (Asian evergreen oaks) and Quercus subgenus Quercus

doi:10.1016/j.sajb.2015.04.015

	Habitat-linked temperature requirements for fruit germination in Quercus species: A comparative study of Quercus subgenus Cyclobalanopsis (Asian evergreen oaks) and Quercus subgenus Quercus
	Xia,Ke; Daws,Matthew I.; Zhou,Zhe-Kun; Pritchard,Hugh W.
	2015-09-01
发表期刊	SOUTH AFRICAN JOURNAL OF BOTANY
卷号	100 页码:108-113
摘要	The genus Quercus contains two subgenera with distinct geographic and habitat ranges. Generally, subgenus Quercus has the wider habitat range spanning subtropical to temperate regions across the Northern Hemisphere, whereas subgenus Cyclobalanopsis mainly occurs in subtropical and tropical Asia. Particularly for subgenus Cyclobalanopsis, germination patterns and behaviour, and how they relate to climate are unknown. In this study we investigated the germination responses of 6 species from subgenus Cyclobalanopsis and 9 species from subgenus Quercus to different temperatures and tested for associations between germination requirements and habitat range. Species from subgenus Cyclobalanopsis from subtropical and tropical habitats (average over-winter monthly temperature >= 8 degrees C) germinated poorly at 15 degrees C and reached high germination percentages at 25 degrees C. Irrespective of the taxa, species living in a wide habitat range (average overwinter temperature range -8 to 23 degrees C) reached high germination percentages at 15-25 degrees C. Across all the species, time to 50% germination was not related to fruit traits but was significantly associated with phylogeny: subgenus Cyclobalanopsis fruits germinated more slowly than those of subgenus Quercus at all temperatures tested. Across species, sensitivity to lower germination temperatures was correlated with the highest temperature in their habitat after fruit dispersal. This study demonstrates a link between germination requirements and divergent distribution patterns between the two subgenera. (C) 2015 SAAB. Published by Elsevier B.V. All rights reserved.
关键词	Acorn Climate Geographic Range Germination Niche Germination Percentage
DOI	10.1016/j.sajb.2015.04.015
收录类别	SCI
语种	英语
WOS记录号	WOS:000361254700017
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/25145
专题	中国科学院东亚植物多样性与生物地理学重点实验室
推荐引用方式 GB/T 7714	Xia,Ke,Daws,Matthew I.,Zhou,Zhe-Kun,et al. Habitat-linked temperature requirements for fruit germination in Quercus species: A comparative study of Quercus subgenus Cyclobalanopsis (Asian evergreen oaks) and Quercus subgenus Quercus[J]. SOUTH AFRICAN JOURNAL OF BOTANY,2015,100:108-113.
APA	Xia,Ke,Daws,Matthew I.,Zhou,Zhe-Kun,&Pritchard,Hugh W..(2015).Habitat-linked temperature requirements for fruit germination in Quercus species: A comparative study of Quercus subgenus Cyclobalanopsis (Asian evergreen oaks) and Quercus subgenus Quercus.SOUTH AFRICAN JOURNAL OF BOTANY,100,108-113.
MLA	Xia,Ke,et al."Habitat-linked temperature requirements for fruit germination in Quercus species: A comparative study of Quercus subgenus Cyclobalanopsis (Asian evergreen oaks) and Quercus subgenus Quercus".SOUTH AFRICAN JOURNAL OF BOTANY 100(2015):108-113.

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