DOI: 10.1016/j.foreco.2014.07.022
Scopus记录号: 2-s2.0-84906277336
论文题名: Fertilization regime interacts with fall temperature in the nursery to determine the frost and drought tolerance of the Mediterranean oak Quercus ilex subsp. ballota
作者: Heredia-Guerrero N. ; Oliet J.A. ; Villar-Salvador P. ; Benito L.F. ; Peñuelas J.L.
刊名: Forest Ecology and Management
ISSN: 0378-1127
出版年: 2014
卷: 331 起始页码: 50
结束页码: 59
语种: 英语
英文关键词: Cold acclimation
; Hardening
; Nitrogen
; Nutrient loading
; Osmotic potential
; Soluble carbohydrate
Scopus关键词: Agronomy
; Drought
; Elongation
; Hardening
; Nitrogen
; Nitrogen fertilizers
; Seed
; Nitrogen
; Cold acclimations
; Drought and cold tolerance
; Environmental conditions
; Nutrient loading
; Osmotic potential
; Quercus ilex subsp. ballota
; Soluble carbohydrates
; Temperature differences
; Drought tolerances
; Mediterranean oak
; Loading
; Hardening
; concentration (composition)
; drought stress
; evolutionarily stable strategy
; fertilization (reproduction)
; growth response
; Mediterranean environment
; seedling
; survivorship
; tree
; acclimation
; bioaccumulation
; carbohydrate
; drought resistance
; evergreen tree
; fertilizer application
; frost hardiness
; nitrogen
; osmosis
; shoot growth
; temperature effect
; transplantation
; Ballota
; Quercus ilex
英文摘要: Nitrogen fertilization in the nursery usually improves the transplanting performance of Mediterranean oaks. However, high N fertilization can reduce seedling stress tolerance, probably depending on the environmental conditions under which plants grow. We hypothesize that high N fertilization under mild fall conditions reduces cold and drought acclimation. To assess this hypothesis, we studied if fall temperature differences among cultivation locations influence the effect of N fertilization regime on cold and drought tolerance, N status and growth in the evergreen Mediterranean oak Quercus ilex subsp. ballota (Desf.) Samp. Plants were cultivated in two nurseries of distinct fall temperature conditions (mild and cold fall nurseries) under four fertilization regimes: Low and high N at constant rate (total N, 33 and 175mgseedling-1), high N at exponential rate (175mgNseedling-1) and fall N loading (89mgNseedling-1). Seedling water relations, survival to a -12°C frost and leaf soluble carbohydrates concentration were assessed three times in the fall, and shoot elongation was measured weekly through the fall. Moreover, seedling mass and N concentration were measured at the end of the fall. Fall loaded seedlings had the highest tissue N concentration, while seedling mass was highest in the high N constant and exponential fertilization regimes. Seedlings at the cold fall nursery concentrated more N but were smaller than seedlings at the mild fall nursery. Cessation of shoot elongation in the mild fall nursery occurred 1month later than in the cold location and high N exponentially-fertilized plants ceased shoot elongation later than the rest of fertilization treatments. Seedlings at the mild fall location had lower drought and cold tolerance than plants at the cold fall site. At mid fall, exponential fertilization at the mild nursery reduced seedling frost and drought tolerance, but treatment differences vanished at the end of the fall. In contrast, fertilization regime did not affect either cold or drought tolerance of seedlings at the cold fall nursery. Across dates and nurseries, frost survival was positively related to leaf soluble carbohydrates concentration and dry weight fraction. Beside, degree of cold acclimation decreased with shoot elongation cessation date and increased with leaf soluble carbohydrates concentration, suggesting a link between shoot growth activity, soluble carbohydrates, and frost tolerance. We conclude that Q. ilex subsp. ballota hardening is reduced by high N exponential fertilization mainly under mild fall conditions, while fall loading and constant low N fertilization did not affect hardening. © 2014 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/65735
Appears in Collections: 影响、适应和脆弱性
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作者单位: Forest Ecology and Restoration Group, Departamento de Ciencias de la Vida, U.D. Ecología, Universidad de Alcalá, P.O. Box 20, Alcalá de Henares, 28805 Madrid, Spain; Departamento de Silvopascicultura, Universidad Politécnica de Madrid, 28040 Madrid, Spain; Centro Nacional de Recursos Genéticos Forestales El Serranillo, Ministerio de Agricultura, Alimentación y Medio Ambiente, P.O. Box 249, 19080 Guadalajara, Spain
Recommended Citation:
Heredia-Guerrero N.,Oliet J.A.,Villar-Salvador P.,et al. Fertilization regime interacts with fall temperature in the nursery to determine the frost and drought tolerance of the Mediterranean oak Quercus ilex subsp. ballota[J]. Forest Ecology and Management,2014-01-01,331