000 02497nab a22003977a 4500
001 G75996
003 MX-TxCIM
005 20240919021145.0
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022 _a0931-2250
022 _a1439-037X (Online)
024 _2https://doi.org/10.1046/j.1439-037X.2002.00594.x
040 _aMX-TxCIM
041 _aeng
072 0 _aF01
072 0 _aF60
090 _aCIS-3538
100 1 _aMerah, O.
_933013
245 0 0 _aAssociation between yield and carbon isotope discrimination value in different organs of durum wheat under drought
260 _c2002.
_aUnited Kingdom :
_bBlackwell Verlag,
340 _aPrinted
520 _aCarbon isotope discrimination (Δ) has been proposed as a selection criterion for transpiration efficiency and grain yield in drought-prone environments for several C3 species, including cereals. Δ analysis, however, has mainly been concerned with grain or culm tissues and little work has been devoted to other organs. The objective of this study was to describe Δ variation in different organs and to examine the relationships between Δ and grain yield across environments. Six durum wheat genotypes with contrasted grain Δ were cultivated under rainfed conditions during three successive years at Montpellier (South of France). Δ was measured on flag leaf, stalk, awns, chaff and rachis sampled at anthesis and maturity, and on mature grain. Higher genotypic variation and closer correlation with yield were noted for grain Δ compared to other plant parts. The genotype ranking across years was more consistent for grain Δ than for other organs. Consequently, the grain seems the most effective plant part for Δ analysis in durum wheat under Mediterranean conditions. The study of Δ variation in other organs may be useful, however, to evaluate the contribution of those organs to grain filling and final yield according to environmental conditions.
546 _aText in English
591 _a0302|AL-Wheat Program
595 _aCSC
650 7 _aWheat
_2AGROVOC
_91310
650 7 _aPlant breeding
_gAGROVOC
_2
_91203
650 7 _91313
_aYields
_2AGROVOC
650 7 _91080
_aDrought
_2AGROVOC
650 7 _91911
_aSeed filling
_2AGROVOC
700 1 _aDeléens, E.
_933014
700 1 _aTeulat, B.
_933015
700 1 _aMonneveux, P.
_920326
773 0 _tJournal of Agronomy and Crop Science
_gv. 188, no. 6, p. 426-434
_dUnited Kingdom : Blackwell Verlag, 2002.
_wu444504
_x0931-2250
942 _cJA
_2ddc
999 _c22577
_d22577