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231224s2014 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2014.08.008
|2 doi
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|a pubmed24n0806.xml
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|a (DE-627)NLM241880270
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|a (NLM)25218731
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|a (PII)S0981-9428(14)00255-1
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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| 100 |
1 |
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|a Gimeno, V
|e verfasserin
|4 aut
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|a Foliar potassium nitrate application improves the tolerance of Citrus macrophylla L. seedlings to drought conditions
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|c 2014
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 16.10.2015
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Copyright © 2014 Elsevier Masson SAS. All rights reserved.
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|a Scarcity of water is a severe limitation in citrus tree productivity. There are few studies that consider how to manage nitrogen (N) nutrition in crops suffering water deficit. A pot experiment under controlled-environment chambers was conducted to explore if additional N supply via foliar application could improve the drought tolerance of Citrus macrophylla L. seedlings under dry conditions. Two-month-old seedlings were subjected to a completely random design with two water treatments (drought stress and 100% water/field capacity). Plants under drought stress (DS) received three different N supplies via foliar application (DS: 0, DS + NH4NO3: 2% NH4NO3, DS + KNO3: 2% KNO3). KNO3-spraying increased leaf and stem DW as compared with DS + NH4NO3 and DS treatments. Leaf water potential (Ψw) was decreased by drought stress in all the treatments. However, in plants from DS + NH4NO and DS + KNO3, this was due to a decrease in the leaf osmotic potential, whereas the decrease in those from the DS treatment was due to a decrease in the leaf turgor potential. These responses were correlated with the leaf proline and K concentrations. DS + KNO3-treated plants had a higher leaf proline and K concentration than DS-treated plants. In terms of leaf gas exchange parameters, it was observed that net assimilation of CO2 [Formula: see text] was decreased by drought stress, but this reduction was much lower in DS + KNO3-treated plants. Thus, when all results are taken into account, it can be concluded that a 2% foliar-KNO3 application can enhance the tolerance of citrus plants to water stress by increasing the osmotic adjustment process
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Drought stress
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|a Fertilisation
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|a Growth
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|a Leaf gas exchange
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|a Mineral nutrition
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|a Rootstock
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|a Explosive Agents
|2 NLM
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|a Nitrates
|2 NLM
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| 650 |
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|a Potassium Compounds
|2 NLM
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| 650 |
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|a potassium nitrate
|2 NLM
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| 650 |
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|a RU45X2JN0Z
|2 NLM
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| 700 |
1 |
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|a Díaz-López, L
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Simón-Grao, S
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Martínez, V
|e verfasserin
|4 aut
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|a Martínez-Nicolás, J J
|e verfasserin
|4 aut
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|a García-Sánchez, F
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 83(2014) vom: 14. Okt., Seite 308-15
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
1 |
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|g volume:83
|g year:2014
|g day:14
|g month:10
|g pages:308-15
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|u http://dx.doi.org/10.1016/j.plaphy.2014.08.008
|3 Volltext
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