Bearded or smooth? Awns improve yield when wheat experiences heat stress during grain fill in the southeastern United States

Published by Oxford University Press on behalf of the Society for Experimental Biology 2023.

Bibliographische Detailangaben
Veröffentlicht in:	Journal of experimental botany. - 1985. - 74(2023), 21 vom: 21. Nov., Seite 6749-6759
1. Verfasser:	DeWitt, Noah (VerfasserIn)
Weitere Verfasser:	Lyerly, Jeanette, Guedira, Mohammed, Holland, James B, Murphy, J Paul, Ward, Brian P, Boyles, Richard E, Mergoum, Mohamed, Babar, Md Ali, Shakiba, Ehsan, Sutton, Russel, Ibrahim, Amir, Tiwari, Vijay, Santantonio, Nicholas, Van Sanford, David A, Howell, Kimberly, Smith, Jared H, Harrison, Stephen A, Brown-Guedira, Gina
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2023
Zugriff auf das übergeordnete Werk:	Journal of experimental botany
Schlagworte:	Journal Article Research Support, U.S. Gov't, Non-P.H.S. Research Support, Non-U.S. Gov't Awns abiotic stress gxe phenology reaction norm wheat

Beschreibung
Zusammenfassung:	Published by Oxford University Press on behalf of the Society for Experimental Biology 2023. The presence or absence of awns-whether wheat heads are 'bearded' or 'smooth' - is the most visible phenotype distinguishing wheat cultivars. Previous studies suggest that awns may improve yields in heat or water-stressed environments, but the exact contribution of awns to yield differences remains unclear. Here we leverage historical phenotypic, genotypic, and climate data for wheat (Triticum aestivum) to estimate the yield effects of awns under different environmental conditions over a 12-year period in the southeastern USA. Lines were classified as awned or awnless based on sequence data, and observed heading dates were used to associate grain fill periods of each line in each environment with climatic data and grain yield. In most environments, awn suppression was associated with higher yields, but awns were associated with better performance in heat-stressed environments more common at southern locations. Wheat breeders in environments where awns are only beneficial in some years may consider selection for awned lines to reduce year-to-year yield variability, and with an eye towards future climates
Beschreibung:	Date Completed 27.11.2023 Date Revised 27.02.2024 published: Print CommentIn: J Exp Bot. 2023 Nov 21;74(21):6409-6412. - PMID 37988179 Citation Status MEDLINE
ISSN:	1460-2431
DOI:	10.1093/jxb/erad318