
%0 Journal Article
%A Royo, C. 
%A Villegas, D. 
%A del Moral, L. F. Garc&iacute;a 
%A Elhani, S. 
%A Aparicio, N. 
%A Rharrabti, Y. 
%A Araus, J. L. 
%T Comparative performance of carbon isotope discrimination and canopy temperature depression as predictors of genotype differences in durum wheat yield in Spain
%J Australian Journal of Agricultural Research
%D 2002/05/08
%V 53
%N 5
%P 561-569
%K drought, kernel weight, kernel carbon content.
%R https://doi.org/10.1071/AR01016
%U https://www.publish.csiro.au/paper/AR01016 
%X The relationships between carbon isotope discrimination (&#916;) in mature kernels, canopy temperature depression (CTD) during anthesis and grain filling, 1000-kernel weight (TKW), total carbon content of mature kernels, and yield were studied in durum wheat (Triticum turgidum L. var. durum) grown in Spain (western Mediterranean basin). Twenty-five durum wheat genotypes were grown in 2 regions (NE and SE Spain) and under 2 water regimes (rainfed v. support irrigation) from 1997 to 1999 (i.e. a total of 12 trials). Principal component analysis placed yield and &#916; on the same axis. Pearson&#8217;s correlation and stepwise analysis confirmed that &#916; was the trait that best assessed genotype differences in yield within trials, and was followed, at a considerable distance, by TKW. Our results also demonstrated the extremely poor performance of CTD throughout the wide range of growing conditions in this study. 
