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

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.