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231223s2005 xx ||||| 00| ||eng c |
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|a (NLM)15998400
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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 |
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|a Martin, Antoine
|e verfasserin
|4 aut
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| 245 |
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|a Nitrogen management and senescence in two maize hybrids differing in the persistence of leaf greenness
|b agronomic, physiological and molecular aspects
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| 264 |
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|c 2005
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
|b n
|2 rdamedia
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|a Band
|b nc
|2 rdacarrier
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|a Date Completed 29.09.2005
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|a Date Revised 30.09.2020
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|a published: Print
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|a Citation Status MEDLINE
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| 520 |
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|a Copyright New Phytologist (2005).
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|a Here, nitrogen management within the plant was compared in an early-senescing maize hybrid and in a late-senescing maize hybrid, both grown under field conditions with a high fertilisation input involving large quantities of fertiliser. We monitored, in representative leaf stages, the changes in metabolite content, enzyme activities and steady-state levels of transcripts for marker genes of N primary assimilation, N recycling and leaf senescence. The hybrids differed in terms of persistence of leaf greenness, the expression of marker genes and the concentration of enzymes used to describe the transition from N assimilation to N recycling. The transcription of leaf-senescence marker genes did not differ. Agronomic studies confirmed the ability of the late-senescing hybrid to absorb and store more N in shoots. Despite the differences in the mode of N management adopted by the two hybrids, we conclude that leaf senescence occurs independently of the source-to-sink transition at the high level of fertilisation used involving large quantities of fertiliser. The possibility of improving N metabolic efficiency in the latest maize hybrids is discussed
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|a Comparative Study
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|a Journal Article
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| 650 |
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|a Plant Proteins
|2 NLM
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| 650 |
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|a RNA, Plant
|2 NLM
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| 650 |
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|a Nitrogen
|2 NLM
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| 650 |
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|a N762921K75
|2 NLM
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| 700 |
1 |
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|a Belastegui-Macadam, Xana
|e verfasserin
|4 aut
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| 700 |
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|a Quilleré, Isabelle
|e verfasserin
|4 aut
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| 700 |
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|a Floriot, Mathieu
|e verfasserin
|4 aut
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| 700 |
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|a Valadier, Marie-Hèlène
|e verfasserin
|4 aut
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| 700 |
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|a Pommel, Bernard
|e verfasserin
|4 aut
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| 700 |
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|a Andrieu, Bruno
|e verfasserin
|4 aut
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| 700 |
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|a Donnison, Iain
|e verfasserin
|4 aut
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| 700 |
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|a Hirel, Bertrand
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 167(2005), 2 vom: 13. Aug., Seite 483-92
|w (DE-627)NLM09818248X
|x 1469-8137
|7 nnns
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| 773 |
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|g volume:167
|g year:2005
|g number:2
|g day:13
|g month:08
|g pages:483-92
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|d 167
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|h 483-92
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