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

Ðata for saccharifyi"ng âctivity was also subject to
large errus and it seemed tìnat C-?O-Z, C-?A4 and Bonanza
were at about the sãme leve1 with C-ZO-I sornewhat lower.
the ranges presented in îab1e B showed that significant
differences exísted betr¡,¡een rines within aì-l populations for
a1l- traits studied except for yield in C-?O-l and soluble
a¡nino-nitrogen in C-70-1 and C-?ô-3,
Maxifirwyr line means ín each population exeeeded the
control mean for all characteristics except <strong>plant</strong> <strong>height</strong>
and degree <strong>of</strong> lodging in Õ-7O-3 and 1evel <strong>of</strong> soluble amino_
nitrogen in botþ C-?O-z and C-?O-j. In al1 cases population
mínimuns v¡ere lower than the control rnean.
The possibility <strong>of</strong> setecting for increased yielding
ability, in particular high yielding short statu.r,ed material,
was tabulated in fable 9" fn populations C-f0-t anð, C-IA-Z
the tall class lines were the highest yielding, with the
interr'rerliate <strong>height</strong> group close behind and above the control
Bonanza, while the semi-dwarf class were lower yielding.
For population C-70-J the highest yielding line was ín the
interrnediate <strong>height</strong> class while the lotvest was the tall line.
For the whole study the highest yielciers frorn the tall ancl
intermediate gz'ollps were no different in yield and the best
yielcling semi-dwarf was at least equal to BÕnanza. The
highest yielding line fron each g:'oup <strong>of</strong> eaeh population
was hiEçher yíeì-ding than the serni-d.war.f parent Minn64-62,
66