| 000 | 03417nab a22004457a 4500 | ||
|---|---|---|---|
| 001 | G93459 | ||
| 003 | MX-TxCIM | ||
| 005 | 20220512174750.0 | ||
| 008 | 220512s2009 xxk|||p|op||| 00| 0 eng d | ||
| 022 | _a1460-2431 (Online) | ||
| 022 | _a0022-0957 | ||
| 024 | 8 | _ahttps://doi.org/10.1093/jxb/erp028 | |
| 040 | _aMX-TxCIM | ||
| 041 | _aeng | ||
| 090 | _aCIS-5633 | ||
| 100 | 1 |
_aCabrera-Bosquet, L. _94720 |
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| 245 | 1 | 0 | _aWater and nitrogen conditions affect the relationships of Δ13C and Δ18O to gas exchange and growth in durum wheat |
| 260 |
_aOxford (United Kingdom) : _bOxford University Press, _c2009. |
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| 500 | _aPeer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0022-0957 | ||
| 500 | _aPeer review | ||
| 500 | _aOpen Access | ||
| 520 | _aWhereas the effects of water and nitrogen (N) on plant Delta(13)C have been reported previously, these factors have scarcely been studied for Delta(18)O. Here the combined effect of different water and N regimes on Delta(13)C, Delta(18)O, gas exchange, water-use efficiency (WUE), and growth of four genotypes of durum wheat [Triticum turgidum L. ssp. durum (Desf.) Husn.] cultured in pots was studied. Water and N supply significantly increased plant growth. However, a reduction in water supply did not lead to a significant decrease in gas exchange parameters, and consequently Delta(13)C was only slightly modified by water input. Conversely, N fertilizer significantly decreased Delta(13)C. On the other hand, water supply decreased Delta(18)O values, whereas N did not affect this parameter. Delta(18)O variation was mainly determined by the amount of transpired water throughout plant growth (T(cum)), whereas Delta(13)C variation was explained in part by a combination of leaf N and stomatal conductance (g(s)). Even though the four genotypes showed significant differences in cumulative transpiration rates and biomass, this was not translated into significant differences in Delta(18)O(s). However, genotypic differences in Delta(13)C were observed. Moreover, approximately 80% of the variation in biomass across growing conditions and genotypes was explained by a combination of both isotopes, with Delta(18)O alone accounting for approximately 50%. This illustrates the usefulness of combining Delta(18)O and Delta(13)C in order to assess differences in plant growth and total transpiration, and also to provide a time-integrated record of the photosynthetic and evaporative performance of the plant during the course of crop growth. | ||
| 536 | _aGlobal Wheat Program | ||
| 546 | _aText in English | ||
| 591 | _aOxford|No CIMMYT affiliation | ||
| 594 | _aINT3193 | ||
| 650 | 7 |
_aHard wheat _2AGROVOC _91142 |
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| 650 | 7 |
_aLeaves _2AGROVOC _98838 |
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| 650 | 7 |
_aGas exchange _2AGROVOC _917066 |
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| 650 | 7 |
_aDrought stress _2AGROVOC _91081 |
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| 650 | 7 |
_aNitrogen _2AGROVOC _92912 |
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| 650 | 7 |
_aNutrient deficiencies _2AGROVOC _95613 |
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| 650 | 7 |
_aWater use efficiency _2AGROVOC _91307 |
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| 700 | 1 |
_9899 _aMolero, G. _gFormerly Global Wheat Program _8INT3193 |
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| 700 | 1 |
_aNogués, S. _93106 |
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| 700 | 1 |
_91436 _aAraus, J.L. |
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| 773 | 0 |
_tJournal of Experimental Botany _gv. 60, no. 6, p. 1633-1644 _dOxford (United Kingdom) : Oxford University Press, 2009. _wG444540 _x0022-0957 |
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| 856 | 4 |
_yOpen Access through DSpace _uhttp://hdl.handle.net/10883/2736 |
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| 942 |
_cJA _2ddc _n0 |
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| 999 |
_c27865 _d27865 |
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