DOI: 10.1016/j.foreco.2013.05.042
Scopus记录号: 2-s2.0-84879697447
论文题名: A comparative study of desiccation responses of seeds of three drought-resistant Mediterranean oaks
作者: Ganatsas P. ; Tsakaldimi M.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2013
卷: 305 起始页码: 189
结束页码: 194
语种: 英语
英文关键词: Acorn germination
; Downy Oak
; Greyish oak
; Kermes oak
; Recalcitrant seeds
Scopus关键词: Acorn germination
; Comparative studies
; Critical moisture content
; Downy Oak
; Greyish oak
; Kermes oak
; Morphological characteristic
; Significant differences
; Cultivation
; Drought
; Drying
; Moisture determination
; Seed
; Driers (materials)
; comparative study
; deciduous forest
; desiccation
; drought resistance
; germination
; Mediterranean environment
; moisture content
; morphology
; seed
英文摘要: The recalcitrance of many Quercus species has received considerable attention. However, considerably less is known about the desiccation sensitivity of drought resistant Mediterranean oaks. The objective of this study was to estimate the seed likelihood sensitivity to desiccation of the three Mediterranean oaks (Quercus coccifera, Quercus pubescens, Quercus pedunculiflora), to see how the severity of desiccation affects acorn moisture content and germination behavior, and to explore any relation of initial acorn characteristics to acorn rate of water loss. Acorns were subjected to variable rates of desiccation after air-drying in room temperature. Results showed that there were significant differences in drying rates between species. Acorn moisture content and germination decreased as the severity of desiccation increased, while the germination capacity of Q. pedunculiflora was unaffected from the applied desiccation period, and remained high after 15 days of drying. In Q. coccifera acorns, water loss rate was correlated to the most of acorn morphological characteristics, while for the other two species this correlation was low. The critical moisture content below which Q. coccifera and Q. pubescens seeds start losing their viability is approximately 26%, which is achieved after a drying period of 5 and 7. days, respectively, while for the species Q. pedunculiflora a longer desiccation period should be investigated to find out the minimum critical moisture content. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/66442
Appears in Collections: 影响、适应和脆弱性
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作者单位: Aristotle University of Thessaloniki, School of Forestry and Natural Environment, Laboratory of Silviculture, P.O. Box 262, GR 54124 Thessaloniki, Greece
Recommended Citation:
Ganatsas P.,Tsakaldimi M.. A comparative study of desiccation responses of seeds of three drought-resistant Mediterranean oaks[J]. Forest Ecology and Management,2013-01-01,305