EXAMPLE SAS PROGRAM #2 FOR ESTIMATING HERITABILITY AND ITS STANDARD ERROR


Example SAS codes correspond to J.B. Holland, W.E. Nyquist, and C.T. Cervantes-Martinez, "Estimating and Interpreting Heritability in Plant Breeding: An Update" submitted to Plant Breeding Reviews.  Manuscript available on request: james_holland@ncsu.edu.

Heritability based on variance among random S0:1 families from two different populations evaluated in a common multi-environment trial, with missing data.  

 
Data are taken from Cervantes-Martinez et al. (2002) Crop Sci: In Press.

Briefly: yield was measured on 20 random S0:1 lines within five sets for each of two populations across four environments in Iowa.

To perform the analysis you first need to download the data files :

Original data on a plot basis for all lines (including checks) is available in an Excel spreadsheet file .  To use the SAS code given, this spreadsheet must be open when running the SAS program!

 1. SAS code for estimating heritability the two populations simultaneously.   Output from this analysis.


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