Habitat-linked temperature requirements for fruit germination in Quercus species: A comparative study of Quercus subgenus Cyclobalanopsis (Asian evergreen oaks) and Quercus subgenus Quercus
Habitat-linked temperature requirements for fruit germination in Quercus species: A comparative study of Quercus subgenus Cyclobalanopsis (Asian evergreen oaks) and Quercus subgenus Quercus
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栎属物种果实发芽的生境相关温度要求：青冈栎亚属（亚洲常绿橡树）和栎属栎属的比较研究
DOI：
10.1016/j.sajb.2015.04.015
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发表时间：
2015-09
影响因子：
3.1
通讯作者：
Hugh W. Pritchard
中科院分区：
文献类型：
--
作者：
Ke Xia;Matthew I. Daws;Zhe-Kun Zhou;Hugh W. Pritchard
栎属包含两个亚属，具有不同的地理和生境范围。一般来说，栎亚属在整个北方半球的亚热带到温带地区具有更广泛的栖息地范围，而青冈亚属主要发生在亚热带和热带亚洲。特别是对于青冈亚属，发芽模式和行为，以及它们与气候的关系是未知的。本文研究了青冈亚属（Cyclobalanopsis）6种植物和栎亚属（Quercus）9种植物对不同温度的萌发反应，并探讨了萌发要求与生境范围之间的关系。来自亚热带和热带生境（越冬月平均温度≥ 8 °C）的青冈亚属的物种在15 °C时萌发较差，在25 °C时萌发率较高。无论是哪种分类，生活在广泛栖息地范围内（平均越冬温度范围为-8至23 °C）的物种在15-25 °C时达到高发芽率。在所有的物种，时间到50%发芽是不相关的果实性状，但显着相关的发育：subgenusCyclobalanopsis水果发芽比subgenusQuercus在所有温度下测试更慢。在不同物种中，对较低发芽温度的敏感性与果实传播后栖息地的最高温度相关。这项研究表明，发芽要求和不同的分布模式之间的联系，两个亚属。
The genusQuercuscontains two subgenera with distinct geographic and habitat ranges. Generally, subgenusQuercushas the wider habitat range spanning subtropical to temperate regions across the Northern Hemisphere, whereas subgenusCyclobalanopsismainly occurs in subtropical and tropical Asia. Particularly for subgenusCyclobalanopsis, germination patterns and behaviour, and how they relate to climate are unknown. In this study we investigated the germination responses of 6 species from subgenusCyclobalanopsisand 9 species from subgenusQuercusto different temperatures and tested for associations between germination requirements and habitat range. Species from subgenusCyclobalanopsisfrom subtropical and tropical habitats (average overwinter monthly temperature ≥ 8 °C) germinated poorly at 15 °C and reached high germination percentages at 25 °C. Irrespective of the taxa, species living in a wide habitat range (average overwinter temperature range − 8 to 23 °C) reached high germination percentages at 15–25 °C. Across all the species, time to 50% germination was not related to fruit traits but was significantly associated with phylogeny: subgenusCyclobalanopsisfruits germinated more slowly than those of subgenusQuercusat 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.
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影响因子：
3.7
作者：
Li Jian-qiang
通讯作者：
Li Jian-qiang
影响因子：
4.2
作者：
Daws, MI;Garwood, NC;Pritchard, HW
通讯作者：
Pritchard, HW
DOI：
10.1086/285660
发表时间：
1994-07
期刊：
The American Naturalist
影响因子：
--
作者：
M. Rees
通讯作者：
M. Rees
影响因子：
5.2
作者：
Norden, Natalia;Daws, Matthew I.;Chave, Jerome
通讯作者：
Chave, Jerome
影响因子：
1.4
作者：
H. Chin;Y. Hor;M. Lassim
通讯作者：
H. Chin;Y. Hor;M. Lassim