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

(I963j. fhe genotypes differed significantly for test
weight at Carman and Winnipeg (fabLe 6b), in favour <strong>of</strong>
Bonanza at Õarman and. in favour <strong>of</strong> Minn 6U_62 at Winnipeg
(Table 65). This contradictory result is explained again
by the ta1l genotype being rnore tolerant <strong>of</strong> the stresses at
Carman while the ideal conditions at Winnipeg alLorved the
later-maturing seni-dwarf to contínue growth and eomplete
its grain filling period there.
The significant second order interaction at Carman
(fable 64) occurred because differences were consistent
over seeding rates at row spacing one, but variable over
seeding rates at the other row spacings.
Percent Barley Nitroeen
Signíficant differences occurred 'oetween genotypes at
all locations (Table 66), with Bona;nze- having more grain
nitrogen at trlinnipeg and less at the other locations (TabLe
6?). 0f particular interest are the higher protein leve1s
at ltlinnipeg despite the high yields at this site, indicative
<strong>of</strong> the more ideal eonditions and higher fertility levels
there .
No differences attributabLe to eíther row spaci.ng or
seeding rate for percent barley nitrogen were found, as was
the case in a report by young and. Bauer egel) from a wheat
st udy.
A significant genotype by seedj-ng rate interaetion
oceurred at Carman because percent barley nitrogen for
150