41 vincent vadez tli obj5 phase ii
TRANSCRIPT
ICRISAT – CIAT – ISRA – Univ North Carolina – NARS of different crops
Objective 5: Cross-crop issues
Activity 1: Drought phenotyping = Refining breeder tools
Proposed Workplan for Phase II
Background and rationale for that activity
No cross specie phenotyping in Phase I but comparative genomics
Different crops work on similar traits with different methods
Incomplete / unrefined breeder tool box
No clear idea of trait value on yield
Capacity building (human) on drought phenotyping needed
Jw
Water use / productivity
Water uptake
Reproduction / partitioning
What traits?
Water use / productivity
Water uptake
Reproduction and partitioning
Modeling
Sub-A
ctivity 5: Training
Proposed sub-Activities
“Breeder toolbox”
Staygreen
SPAD / SLA
CID
Grain number / Grain size
CTD
How to improve / enlarge / refine the breeder tool box?
Relation with yield Relation with essential processes whose effects can be modeled Prediction of trait / process value on yield More / better tools
“Breeder toolbox”
Staygreen
SPAD / SLA
CID
Grain number / Grain size
CTD
(Link with Trait phenotyping + phenot protocols Services of MBP)
“Breeder toolbox” “Water uptake” “Water use /
Productivity”
“Reproduction / Remobilization”
Pre/post -anthesis water use
High TE
Low Gs
Stomata sensitivity to VPD
High mesophyll capacity
Staygreen
SPAD / SLA
CID
Grain number / Grain size
CTD
(Link with Trait phenotyping + phenot protocols Services of MBP)
“Breeder toolbox” “Water uptake” “Water use /
Productivity”
“Reproduction / Remobilization”
Pre/post -anthesis water use
High TE
Low Gs
Stomata sensitivity to VPD
High mesophyll capacity
Staygreen
SPAD / SLA
CID
Grain number / Grain size
CTD
“Breeder toolbox” “Water uptake” “Water use /
Productivity”
“Reproduction / Remobilization”
Pre/post -anthesis water use
High TE
Low Gs
Stomata sensitivity to VPD
High mesophyll capacity
Staygreen
SPAD / SLA
CID
Grain number / Grain size
CTD
“Right” kinetics of water uptake
Higher water uptake
“Breeder toolbox” “Water uptake” “Water use /
Productivity”
“Reproduction / Remobilization”
Pre/post -anthesis water use
High TE
Low Gs
Stomata sensitivity to VPD
High mesophyll capacity
Staygreen
SPAD / SLA
CID
Grain number / Grain size
CTD
“Right” kinetics of water uptake
Higher water uptake
Flower “tolerance” to water stress
Shorter/longer flower to maturity interval
PPI / PHI SBR / HI
“Breeder toolbox” “Water uptake” “Water use /
Productivity”
Pre/post -anthesis water use
Low Gs
Stomata sensitivity to VPD
Staygreen
“Right” kinetics of water uptake
Higher water uptake
?
?
? ?
?
Does my tool relate to yield?
How does the tool relate to a process?
“Breeder toolbox” “Water uptake”
Staygreen
“Right” kinetics of water uptake
“Breeder toolbox” “Water uptake”
Staygreen
“Right” kinetics of water uptake
Testing traits by Crop simulation modeling
75%
Median
25%
Probability of yield increase – Trait A
75%
Median
25%
Probability of yield increase – Trait B
“Breeder toolbox”
Trait B
Testing traits by Crop simulation modeling
Trait A
“Breeder toolbox” “Water uptake” “Water use /
Productivity”
“Reproduction / Remobilization”
Pre/post -anthesis water use
High TE
Low Gs
Stomata sensitivity to VPD
High mesophyll capacity
Staygreen
SPAD / SLA
CID
Grain number / Grain size
CTD
“Right” kinetics of water uptake
Higher water uptake
Flower “tolerance” to water stress
Shorter/longer flower to maturity interval
PPI / PHI SBR / HI
Testing traits by Crop simulation modeling
Water use / productivity
Water uptake
Reproduction and partitioning
Modeling
Sub-A
ctivity 5: Training
Outputs to TLII
Trait value predicted
Refined protocols More tools
Better pheno- typing data
Thank you