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231226s2001 xx |||||o 00| ||eng c |
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|a 10.1046/j.0028-646x.2001.00240.x
|2 doi
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|a eng
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|a Broadley, Martin R
|e verfasserin
|4 aut
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|a Nitrogen-limited growth of lettuce is associated with lower stomatal conductance
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|c 2001
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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
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|a Date Revised 17.08.2022
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|a published: Print
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|a Citation Status PubMed-not-MEDLINE
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|a • C assimilation (A) has been shown to limit the growth of young Lactuca sativa (lettuce) plants following an interruption in their external N supply. Further data from these plants were used to test two hypotheses: that N-limited growth of lettuce is associated with lower stomatal conductance (gs ); and that reductions in gs result from adjustments to stomatal frequency or distribution. • The photosynthetic characteristics, nitrate and organic N-concentrations, as well as epidermal and stomatal distributions, were determined in leaves of hydroponically grown lettuce plants supplied continuously with N or with N removed for up to 14 d. • Although N-limited plants had lower maximum rates of A, comparisons at equivalent values of gs showed that A was not directly limited by organic-N but by gs . Reductions in gs under N-limiting conditions did not associate with adjustments to stomatal frequency or distribution. • Associations between plant N and A could arise either through stomata responding directly to signals induced by N deprivation or to increased CO2 partial pressure at the sites of carboxylation
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|a Journal Article
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|a Lactuca sativa (lettuce)
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|a nitrate
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|a nitrogen deficiency
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|a photosynthesis
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|a relative growth rate (RGR)
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|a stomatal conductance
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|a stomatal index
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|a Escobar-Gutiérrez, Abraham J
|e verfasserin
|4 aut
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|a Burns, Amanda
|e verfasserin
|4 aut
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| 700 |
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|a Burns, Ian G
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t The New phytologist
|d 1979
|g 152(2001), 1 vom: 01. Okt., Seite 97-106
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|x 1469-8137
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|g volume:152
|g year:2001
|g number:1
|g day:01
|g month:10
|g pages:97-106
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|u http://dx.doi.org/10.1046/j.0028-646x.2001.00240.x
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