PHENOFITTING: Allelic constitution for genes resposible of the phenological adaptation as a strategy to minimize the environmental limitations to wheat yield. Case studies in target environments of both hemispheres.
The project submitted addresses the challenge imposed by climate change to durum wheat breeding, aiming at the elucidation of possible adaptation strategies to present and future environmental conditions. The main objective of the project is to increase the current knowledge about genes responsible for durum wheat phenological adaptation, their interaction with the environment (particularly with regard to photoperiod, temperature and solar radiation), and the effects of this interaction on yield formation.
The main objective takes shape through the following specific objectives:
- Identification and mapping earliness per se (Eps) genes by using a population of 400 RILs, monomorphic for Rht, Vrn and Ppd genes, while maintaining great diversity in heading date.
- To quantify the effect of Eps genes on yield and yield components in contrasting environments.
- To evaluate the constraint imposed to yield by post-anthesis solar radiation and its relationship with sink size.
- To ascertain the effect of different allelic combinations for Rht, Vrn and Ppd genes on durum wheat phenology over a gradient of target latitudes.
- To determine the relationship between allelic variation for Rht, Vrn and Ppd genes and Nitrogen Use Efficiency (NUE), Radiation Use Efficiency (RUE) and Water Use Efficiency (WUE).