Effects of reduced plant height on breeding requirements and ...

ìr(12) Saccharifying activity - recorded as units, determined
by the method outlined by Bendelow (fg??),
x(11) Percent Barley nitrogen - recorded as percent;
determined by the Kjeldhal procedu_re.
*(14) Solubl-e amino-nitrogen - recorded as mg. per 1o0 mg.
<strong>of</strong> barley; deterrnined as per roethod outli-ned by
Bendelow (19??),
Analysis <strong>of</strong> variance was calculated for each characteristic
in each population on the combined datâ over years and
locations. Genetic and environmental variances were calculated
using the estirnated mean squares (Stee1 and Torrie,
1960). fieritabilíty estimates were computed by the nethod
<strong>of</strong> Constock and Moll (1963) based on the eomponents <strong>of</strong>
varíance. lhe standard errors for the heritabilities were
computed by the method outlined by Pesek and Baker (fpZf).
Missing plot data were solved for, where necessary, by the
nethods <strong>of</strong> Healy and Westmacott (L956),
To test for differences between genotypes and the
significance <strong>of</strong> genetic variance the approxinate F test (F')
suggested by Cochran and Cox (f95?) was used, with degrees
<strong>of</strong> freedom calculated by the Sâtterhthwalte approximation
(I,eclerg et aL. , a962).
Paired t-tests were used to determine whether or not
population means differed from each other for the various
characterístic s .
Simp1e phenotypie correLation coefficients were conputed.
between all combinations <strong>of</strong> characteristics within each
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