| Desiccation and post-dispersal infestation of acorns of Quercus schottkyana, a dominant evergreen oak in SW China | |
Xia, Ke1; Tan, Hong-Yu2; Turkington, Roy3,4; Hu, Jin-Jin5; Zhou, Zhe-Kun5,6
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| 2016-11-01 | |
| 发表期刊 | PLANT ECOLOGY
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| 卷号 | 217期号:11页码:1369-1378 |
| 摘要 | The Asian evergreen broad-leaved forests in Southwestern China are among the most diverse in the world. Quercus schottkyana is a dominant oak in these forests but its seedlings are noticeably uncommon. Quercus schottkyana has desiccation-sensitive acorns despite being widespread in regions with a distinct 5- to 6-month dry season shortly following acorn drop. Here we investigated the effects of desiccation and post-dispersal predation by rodents and bark beetles [Coccotrypes sp. (Coleoptera: Curculionidae)] on acorns of Q. schottkyana. Most acorns of Q. schottkyana lie on the soil surface after dispersal, but some acorns (1.5 %) were buried. For the sound acorns (acorns not infested by weevils) that lay on the soil surface during the dry season, moisture content decreased to 34.6 % in the cotyledons and 42.3 % in the axes and viability decreased significantly from 81 to 32 %. Surface acorns were also subject to high infestation by bark beetles which emerge towards the end of the dry season and cause high mortality of acorns that survived the dry season. Burial effectively retained moisture and viability of acorns during the dry season. However, approximately 75 % of buried sound acorns were subsequently damaged by bark beetles. We show that desiccation and post-dispersal infestation by Coccotrypes sp. killed about 98 % of sound acorns on the soil surface before germination could begin in June but about 20 % of buried sound acorns germinated. However, because most acorns of Q. schottkyana lie on the soil surface and there is limited burial, regeneration of this species from acorns is problematic. |
| 关键词 | Coccotrypes Cyclobalanopsis Glaucoides Desiccation Germination Rate Post-dispersal Infestation Recalcitrant Seeds Yunnan |
| DOI | 10.1007/s11258-016-0654-1 |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000385195700009 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.kib.ac.cn/handle/151853/33629 |
| 专题 | 中国西南野生生物种质资源库 |
| 作者单位 | 1.Chinese Acad Sci, Kunming Inst Bot, Germplasm Bank Wild Species, Kunming 650201, Peoples R China 2.Colorado State Univ, Dept Stat, Ft Collins, CO 80523 USA 3.Univ British Columbia, Dept Bot, Vancouver, BC V6T 1Z4, Canada 4.Univ British Columbia, Biodivers Res Ctr, Vancouver, BC V6T 1Z4, Canada 5.Chinese Acad Sci, Key Lab Trop Forest Ecol, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China 6.Chinese Acad Sci, Key Lab Plant Divers & Biogeog East Asia, Kunming Inst Bot, Kunming 650201, Peoples R China |
| 推荐引用方式 GB/T 7714 | Xia, Ke,Tan, Hong-Yu,Turkington, Roy,et al. Desiccation and post-dispersal infestation of acorns of Quercus schottkyana, a dominant evergreen oak in SW China[J]. PLANT ECOLOGY,2016,217(11):1369-1378. |
| APA | Xia, Ke,Tan, Hong-Yu,Turkington, Roy,Hu, Jin-Jin,&Zhou, Zhe-Kun.(2016).Desiccation and post-dispersal infestation of acorns of Quercus schottkyana, a dominant evergreen oak in SW China.PLANT ECOLOGY,217(11),1369-1378. |
| MLA | Xia, Ke,et al."Desiccation and post-dispersal infestation of acorns of Quercus schottkyana, a dominant evergreen oak in SW China".PLANT ECOLOGY 217.11(2016):1369-1378. |
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| 258-016-0654-1.pdf（725KB） | 期刊论文 | 作者接受稿 | 开放获取 | CC BY-NC-SA | 浏览 下载 | |
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