Stem
The maize stem varies in height from less than 0,6 m
in some genotypes to more than 5,0 m (in extreme
cases) in others. The stem is cylindrical, solid and
is clearly divided into nodes and internodes. It
may have eight to 21 internodes. The internodes
directly below the first four leaves do not
lengthen, whereas those below the sixth, seventh
and eighth leaves lengthen to approximately 25,
50 and 90 mm, respectively. Tillers may develop
from nodes below the soil surface.
The lateral shoot bearing the main ear develops
more or less from the bud on the eighth node
above the soil surface. The five or six buds
directly below the bud give rise to rudimentary
lateral shoots of which one or two develop to
produce ears.
Stem
The maize stem varies in height from less than 0,6 m
in some genotypes to more than 5,0 m (in extreme
cases) in others. The stem is cylindrical, solid and
is clearly divided into nodes and internodes. It
may have eight to 21 internodes. The internodes
directly below the first four leaves do not
lengthen, whereas those below the sixth, seventh
and eighth leaves lengthen to approximately 25,
50 and 90 mm, respectively. Tillers may develop
from nodes below the soil surface.
The lateral shoot bearing the main ear develops
more or less from the bud on the eighth node
above the soil surface. The five or six buds
directly below the bud give rise to rudimentary
lateral shoots of which one or two develop to
produce ears.
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