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

to days in post-anthesis and lodging.
Significant negative relationships were fou¡d ín ihis
study bêtween kernel weight and levels <strong>of</strong> alpha-amylase and
<strong>of</strong> soLuble amino-nåtrogen. Â. sígnificant, but weak,
positive correlation was revealed between kernel we ight
and percent barley nitrogen. Such a relalionship was
previously reported by Hayter and Riggs (Lg?3) and Metcalfe
et al. (t96?).
Although the correlations between test weight and
percent plumpness were heterogeneous they were all positlve
and signifícant" Similar relationships were reported by
Crook and Poehlnan (Lg?!) and Rutger et a1. (196?),
The significant negative association <strong>of</strong> test weight
with days to headíng and the positive correlation with days
in post-anthesis reflected the effect <strong>of</strong> these characters
in deternining the grain filling period. t tthough previously
reported as negative (Rutger et al., Lg6? ), in this study
there was a posítive assocÍation between test weigl'rt and
degree <strong>of</strong> lodging.
The test weight - quality faetor correlations were
notable in that the only population in which these v¿ere
significant was C-IO-Z, which showed a positive correlation
<strong>of</strong> test weÍght and percênt barley nitrogen, and negative
relationships betr^'een test weight and the ottrer quality
parameters.
îhis study showed a posítive correlation <strong>of</strong> percent
pLumpness with days ín post-anthesis and the accompanying