TABLE V
REDISTRIBUTION OF AUXIN CAUSED BY UNILATERAL ILLUMINATION OF DICOTYLEDONS
61
Plant used
Material and method
Illumination Plants unilaterally illuminated
Plants in dark
time
(hours)
Light side Dark side Total
Side A
Side B
Total
Raphanus sativus
Raphanus sativus
Hypocotyl tips; 3 hours diffusate
6 mm. cylinders of hypocotyl, with
auxin applied; 3 hours diffusate
Phaseolus multiflorus
Light-grown stems; CHC1
3 extraction
2li
Dark-grown stems; CHC1
3 extraction
4
4
(Curvature in degrees)
(Curvature in degrees)
1±1
4.4 + 1.5
5.3 5.1+0.8 5.0 + 1.5 10.4
0.8 + 1
5.8 + 1
6.6
6.6
&
11.0
b
17.6
10.0
C
9.9
C
19.9
(Auxin units/100 gm. dry weight)
2.9
d
5.3
d
8.2
d
2.5
&
3.6
6
6.1
17 A
d
"
29.8
d
"
P
w
o
H
O
H
O
>
Ö
X
O
H
O
H
>
° Data of van Overbeek for Raphanus {17); Boysen-Jensen for Phaseolus {59).
b
Average of 8 experiments.
c
Average of 2 experiments.
d
Average of 4 experiments.
e
Another variety, of higher auxin content.
2
1
3
REDISTRIBUTION OF AUXIN CAUSED BY UNILATERAL ILLUMINATION OF DICOTYLEDONS
61
Plant used
Material and method
Illumination Plants unilaterally illuminated
Plants in dark
time
(hours)
Light side Dark side Total
Side A
Side B
Total
Raphanus sativus
Raphanus sativus
Hypocotyl tips; 3 hours diffusate
6 mm. cylinders of hypocotyl, with
auxin applied; 3 hours diffusate
Phaseolus multiflorus
Light-grown stems; CHC1
3 extraction
2li
Dark-grown stems; CHC1
3 extraction
4
4
(Curvature in degrees)
(Curvature in degrees)
1±1
4.4 + 1.5
5.3 5.1+0.8 5.0 + 1.5 10.4
0.8 + 1
5.8 + 1
6.6
6.6
&
11.0
b
17.6
10.0
C
9.9
C
19.9
(Auxin units/100 gm. dry weight)
2.9
d
5.3
d
8.2
d
2.5
&
3.6
6
6.1
17 A
d
"
29.8
d
"
P
w
o
H
O
H
O
>
Ö
X
O
H
O
H
>
° Data of van Overbeek for Raphanus {17); Boysen-Jensen for Phaseolus {59).
b
Average of 8 experiments.
c
Average of 2 experiments.
d
Average of 4 experiments.
e
Another variety, of higher auxin content.
2
1
3