TY  - JA
AU  - Monneveux,P.
AU  - Reynolds,M.P.
AU  - González Santoyo,H.I.
AU  - Peña-Bautista,R.J.
AU  - Mayr,L.
AU  - Zapata,F.
TI  - Relationships between grain yield, flag leaf morphology, carbon isotope discrimination and ash content in irrigated wheat
SN  - 0931-2250
PY  - 2004///
CY  - United Kingdom
PB  - Wiley
KW  - Ash content
KW  - AGROVOC
KW  - Isotope analysis
KW  - Leaves
KW  - Triticum aestivum
N1  - Peer review; Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0931-2250
N2  - The purpose of this study was to examine how differences in leaf angle, leaf rolling (LR) and glaucousness (GL) can modify yield components and leaf physiological traits in wheat. A set of 167 lines derived from a cross between two high-yielding bread wheat cultivars differing for these traits was grown under flood irrigation and high evaporative demand in the north-west of Mexico. Area, mass per unit area and chlorophyll content of the flag leaf were assessed. Carbon isotope discrimination (Δ) and ash content (ma) were also measured. A significant correlation was found between grain yield (GY) and both Δ and ma suggesting that, despite well-watered conditions, leaf stomatal conductance was the main yield-limiting factor. Leaf posture and LR did not significantly affect yield, Δ and ma. Higher grain weight was noted, however, in lines with droopy flag leaves. Erect leaves had higher mass per unit area. GL was associated with a significant increase in GY and grain weight. Glaucous lines also had higher Δ and ma, suggesting higher transpiration rate and lower transpiration efficiency. The study confirms that Δ and ma represent promising criteria for GY in wheat and provides evidence that GL can contribute to higher yield, even under irrigated conditions
UR  - https://hdl.handle.net/20.500.12665/1703
DO  - https://doi.org/10.1111/j.1439-037X.2004.00116.x
T2  - Journal of Agronomy and Crop Science
ER  -