To access the full text documents, please follow this link: http://hdl.handle.net/10459.1/30337

Effect of temperature and carpel size during pre-anthesis on potential grain weight in wheat
Calderini, D. F.; Abeledo, L. G.; Savin, Roxana; Slafer, Gustavo A.
The effect of environmental conditions immediately before anthesis on potential grain weight was investigated in wheat at the experimental field of the Faculty of Agronomy (University of Buenos Aires, Argentina) during 1995 and 1996. Plants of two cultivars of wheat were grown in two environments (two contrasting sowing dates) to provide different background temperature conditions. In these environments, transparent boxes were installed covering the spikes in order to increase spike temperature for a short period (c. 6 days) immediately before anthesis, i.e. between ear emergence and anthesis. In both environments, transparent boxes increased mean temperatures by at least 3n8 mC. These increases were almost entirely due to the changes in maximum temperatures because minimum temperatures were little affected. Final grain weight was significantly reduced by higher temperature during the ear emergence–anthesis period. It is possible that this reduction could be mediated by the effect of the heat treatment on carpel weight at anthesis because a curvilinear association between final grain weight and carpel weight at anthesis was found. This curvilinear association may also indicate a threshold carpel weight for maximizing grain weight.
-Blat -- Efecte de la temperatura
-Blat -- Conreu
(c) Cambridge University Press, 1999
article
publishedVersion
Cambridge University Press
         

Full text files in this document

Files Size Format View
S002185969900650Xa.pdf 415.1 KB application/pdf View/Open

Show full item record

Related documents

Other documents of the same author

 

Coordination

 

Supporters