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

per spike. There was little Cifference at the
row spacing. At the widest row width the tall_
more kernels per spike ai the lowest seed rate
seni-dwarf had. the nost at the highest seeding
this row width.
200 Kernel Vi e icht
Significant differences occurred. between genotypes and
seeding rates at Carman and Sanford (fable 62). No other
significant differences or interactions resutted.
At both sites where differences were found, the ta1l
genotype had heavier kernel-s (fa¡fe 6j). This was expeeted
from previous results with these genotypes (Experiments I
and II). Under more ideal growing conditions at Vùinnipeg
no differences occurred. The absence <strong>of</strong> any effect <strong>of</strong> row
spacing on seed weight was previously reported by Finlay
et at (1921).
îhe decreased kernel weight wÍth increased seed.ing rãte
at Sanford and Carman (Table 63) in the present study is in
agreement with the report <strong>of</strong> Guitard g! al (1961). Although
not signif icant, a similar trend existed at -v,iínnipeg ( Table
63),
Test lieisht
interme d iate
ge notype had
while the
rate at
AN0VA (îable 64) indicated no significant effect <strong>of</strong>
either row spacing or seed.ing rate on this parameter as was
the case in reports by Sienens (f9$) and lvliddleton et al_.
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