Skip to content

Impact of Sorghum Racial Structure and Diversity on Genomic Prediction of Grain Yield Components

Notifications You must be signed in to change notification settings

KresovichLab/GS-SAP_GrainYield

 
 

Folders and files

NameName
Last commit message
Last commit date

Latest commit

 

History

43 Commits
 
 
 
 
 
 
 
 

Repository files navigation

Documentation for Sapkota et. al. 2019

Data

BLUEs_pheno_all.csv - Best linear unbiased estimate (BLUE) phenotype data for all accessions in the panel.

PI Subpopulation Cluster Race Origin DTA PH GN GW GY FLH PL BL
PI152651 Caudatum 4 0 NA 66 146.61 1286 27.32 43.95 97 14.33333333 57.95
PI17548 Kafir 2 0 NA 66 214.06 1167 15.62 26.66 156.8333333 22.83333333 83.41666667
PI24969 Durra 3 0 NA 80 182.06 1319 29.92 50.86 162 13.33333333 41.83333333
PI329435 Mixed 1 0 NA 80 95.5 1388 15.68 30.47 65.83333333 26 72.58333333

Qmatrix_admixture_k5.csv

Ancestry coefficients of five subpopulations calculated using admixture (Alexandre et. al. 2009).

SAP_geno-pheno.zip

A zip file containing both genotype matrix (-1,0,1 format) and phenotypic BLUEs.

Manuscript

Manuscript for the publication along with supplementary file. The figures and tables are embedded in the manuscript.

Scripts

Package versions used

lme4_1.1-21 MCMCglmm_2.29 ape_5.3 coda_0.19-2 Matrix_1.2-17 BGLR_1.0.8 rrBLUP_4.6

VCF_to_genotype_matrix.R

This script contains the functions my.read.vcf to read SNP files in vcf format, and the parse.vcf function to create a genotype matrix (in -1,0,1 format) that can be used in the rrBLUP package.

Stratified_Sampling_SAP_cluster.R

R script to create a cross-validation file with individuals proportionally divided from each cluster into five equal folds.

Cross-validation scripts

R scripts used to implement GBLUP and cross validations using kin.blup function in R package rrBLUP.

  • CV1_prediction.R # proportional sampling from races
  • CV2_AR_prediction.R # sampling from across race
  • CV2_WR_prediction.R # sampling from within race

MCMCglmm_CV1_vCov.R

Fits multi-response model in MCMCglmm to calculate variance-covariance components due to conditional expectations from race.

Heterozygosity_Pegas.R

R script to calculate heterozygosity per site using R package Pegas.

LD_Calculation_HillandWeir.R

Calculations for expected values of R^2 under drift equilibrium Hill and Weir (1988). As implemented in Remington et al. (2001).

GenomicHeritability.R

Calculates variance components and genomic heritability

About

Impact of Sorghum Racial Structure and Diversity on Genomic Prediction of Grain Yield Components

Resources

Stars

Watchers

Forks

Releases

No releases published

Packages

No packages published

Languages

  • R 100.0%