WP1 Assessment of the effect of a shift from PFS to AWDS on rice environment and productivity
The aim of WP1 is to assess the effects of a shift from a permanently flooded (PF) to an alternative wetting and drying system (AWD) on water consumption, emissions of CH4, other GHG, and other environmental parameters.
In addition, WP1 aims at evaluating the consequences of this shift on crop productivity and identifying varieties best adapted to the new system.
Task 1.1: Field trials of selected lines in Italy (leader: CRA): In progress: 2015 and 2017
Task 1.2: Training whole group to GHG measurements (leader: UA): Done: July 2015
Task 1.3: Field trials of selected lines in Spain (leader: IRTA): 2016 – 2017
Task 1.4: Field trials of selected lines in France (leader: CFR): 2016-2017
WP2: Identification of varieties that maintain their productivity in AWDS
1) To genotype the material (association mapping panel and breeding lines) at high density using Genotyping by Sequencing (GBS) and define the final sets of lines on which the project will be conducted in Tasks 2.2 and 2.3, WP1 and WP3.
2) To conduct a whole genome association mapping study (GWAS) on the common association panel for productivity under AWD and PF conditions to identify lines performing well in the new system and markers associated with the genes involved. The best lines identified can feed the second year of trials in WP1.
3) To combine the results of Task 2.2 with those of WP3 in a genomic selection approach in order to predict based on their genotypes the lines potentially best adapted to the new system.
Task 2.1. Choice and genotyping of the association panel and breeding material to be used by partners (leader: CIRAD). In progress: 2015
Task 2.2: Genome-wide association mapping for adaption to AWD system (leader: CRA): In progress: 2015-2017
Task 2.3: Integration of the results through genomic selection (leader: CRA): 2017
WP3. Investigation of plant traits determining adaptive capacity to AWDS
Moving from PF to AWD in rice will alter physical, chemical and biological characteristics of the rhizosphere soil. The soil water profile will change as might soil hardness. The way plants react to this will depend on their root systems, especially the allocation of roots to shallow and deep parts of the soil profile. In some areas, soil salinity will become problematic. Arbuscural Mycorrhizal Fungi (AMF) and nematodes, which are unimportant in anaerobic soils, are likely to become important in aerobic soils. As the soil chemical properties change during an AWD cycle, the soil C and N biogeochemistry will change, driven by changes in microbial activity. Therefore, plant traits that support good growth in AWD will differ from those suited to PF conditions. In WP3, these traits will be explored with the aim of identifying traits responsible for adaptation to AWD and GHG emissions, and QTLs and candidate genes controlling those traits, using a range of experimental biology, genetics and high throughput phenotyping. Lines used will match those in WP1 and 2 to enable integration between WPs.
Task 3.1: Root traits (leader: UT). In progress: 2015-2016
Task 3.2: Genome-wide association mapping for tolerance to salinity (leader: CIRAD): In progress: 2015-2016
Task 3.3: Mycorrhiza and resistance to nematodes and blast infection (leader: GRAG): In progress: 2015-2017
Task 3.4: Interactions between plant AWD adaptation traits, soil microbial community and GHG emission (leader: UA): 2016-2017
1) To ensure that major stakeholders (primarily farmers and regional parks officers) are well informed of the possibility offered by the AWD system, its advantages and possible drawbacks. 2) To ensure that the scientific community is aware of the project and ensure fruitful exchanges with similar initiatives elsewhere.
3) To inform local European citizens of issues and challenges the project is tackling, notably the goals of the intergovernmental FACCE-JPI initiative to address the challenges of Agriculture, Food security and Climate Change.
To reach such a wide spectrum of audiences, various types of events and communication channels will be utilized: scientific networks, local and regional press, technical and farmer journals, web, congresses, scientific peer-reviewed journals, and open field days.
In progress 2015-2017