Table 1 List of trait combinations investigated in the cross-validation 2 (CV2) scheme.

From: Performance of multi-trait and single-trait genomic selection for grain Fe and Zn concentrations in sorghum under different breeding constraints

GS Model

 

Training set

Testing set

Dataset

Target trait

Auxiliary traits

Target trait

Auxiliary traits

Scenario 1*

ST-GBLUP

DS1

Fe_Black

-

Fe_Black

-

Zn_Black

-

Zn_Black

-

Fe_Red

-

Fe_Red

-

Zn_Red

-

Zn_Red

-

DS2

Fe_ICRISAT

-

Fe_ICRISAT

-

Zn_ICRISAT

-

Zn_ICRISAT

-

Fe_Parbhani

-

Fe_Parbhani

-

Zn_Parbhani

-

Zn_Parbhani

-

MT-GBLUP

DS1

Fe_Black

Zn_Black

Fe_Black

Zn_Black

  

Fe_Red

 

Fe_Red

 

Zn_Red

 

Zn_Red

Zn_Black

Fe_Black

Zn_Black

Fe_Black

 

Fe_Red

 

Fe_Red

 

Zn_Red

 

Zn_Red

Fe_Red

Fe_Black

Fe_Red

Fe_Black

 

Zn_Black

 

Zn_Black

 

Zn_Red

 

Zn_Red

Zn_Red

Fe_Black

Zn_Red

Fe_Black

 

Zn_Black

 

Zn_Black

 

Fe_Red

 

Fe_Red

DS2

Fe_ICRISAT

Zn_ICRISAT

Fe_ICRISAT

Zn_ICRISAT

 

Fe_Parbhani

 

Fe_Parbhani

 

Zn_Parbhani

 

Zn_Parbhani

Zn_ICRISAT

Fe_ICRISAT

Zn_ICRISAT

Fe_ICRISAT

 

Fe_Parbhani

 

Fe_Parbhani

 

Zn_Parbhani

 

Zn_Parbhani

Fe_Parbhani

Fe_ICRISAT

Fe_Parbhani

Fe_ICRISAT

 

Zn_ICRISAT

 

Zn_ICRISAT

 

Zn_Parbhani

 

Zn_Parbhani

Zn_Parbhani

Fe_ICRISAT

Zn_Parbhani

Fe_ICRISAT

 

Zn_ICRISAT

 

Zn_ICRISAT

 

Fe_Parbhani

 

Fe_Parbhani

Scenario 2**

ST-GBLUP

DS1

Fe

-

Fe

-

 

Zn

-

Zn

-

 

DS2

Fe

-

Fe

-

 

Zn

-

Zn

-

MT-GBLUP

DS1

Fe

DFF

Fe

DFF

  

PH

 

PH

 

DMC

 

DMC

 

DMY

 

DMY

 

Zn

 

Zn

Zn

DFF

Zn

DFF

 

PH

 

PH

 

DMC

 

DMC

 

DMY

 

DMY

 

Fe

 

Fe

DS2

Fe

Zn

Fe

Zn

Zn

Fe

Zn

Fe

  1. *Scenario 1: Prediction accuracy of within-trait_environment combinations for grain Fe and Zn content in the ST-GBLUP method (using only target trait_environment) and MT-GBLUP method (using the target trait_environment and micronutrient auxiliary trait_environments).
  2. **Scenario 2: Prediction accuracy of across-environments trait combinations for grain Fe and Zn content in the ST-GBLUP method (using only target traits) and MT-GBLUP method (using the target trait, agronomic, and micronutrient auxiliary traits in DS1 and only target trait and micronutrient auxiliary trait in DS2).