CARBOHYDRATE METABOLISM AND GROWTH IN EDIBLE CANNA 15 
Table 6. — Composition of different parts of the carina plant 
HILL NO. 1 (11 MONTHS OLD), STATION FIELD 26C 
6 
05 
= 
03 
CO 
Source and parts of the individual 
plant 
Mois- 
ture 
Dry 
matter 
Starch 
Green Dry 
weight weight 
Solids 
other 
than 
starch 
Sucrose 
in sap 
Hexoses 
in sap 
Total 
sugars 
in sap 
1 
Group 1: 
Btem 
Per cent 
91.96 
68.25 
66.67 
77.20 
89.20 
90.46 
72.62 
66.91 
92.91 
84.88 
78.75 
Per cent 
8.04 
31.75 
33.33 
22.80 
10.80 
Per cent 
Percent 
Per cent 
Per cent 
0.45 
1.57 
1.47 
1.54 
.94 
1.18 
2.53 
1.87 
.32 
1.09 
1.15 
Per cent 
0.82 
.25 
.03 
.11 
1.50 
2.55 
.77 
.09 
.29 
.43 
.29 
Per cent 
1.27 
■) 
Rootstock (apex) l 
23.11 
26.18 
72.78 
78.54 
8.64 
7.15 
1 82 
3 
Rootstock (base) ' 
1. 50 
4 
Group 2: 
Leaves 
1.65 
Midribs and sheaths 
2.44 
6 
Stem 
9.54 
3.73 
7 
Rootstock (apex) 
27.38 
33.09 
7.09 
15.12 
21.25 
20.29 74.09 
26. 53 80. 19 
iSS 
3.30 
8 
q 
Rootstock (base) 
Young Group 3a: 
1.96 
.61 
10 
Rootstock (apex) 
9. 90 65. 45 
5.22 
7.32 
1.52 
n 
Rootstock (base) 
13.93 
65.54 
1.44 
HILL NO. 2 (7 MONTHS OLD), STATION FIELD 26B 
1? 
Group 2: 
Leaves 
1.30 
.87 
1.68 
1.49 
.63 
1.00 
.75 
0.25 
1.18 
2.48 
.18 
1.33 
.04 
.39 
1.55 
13 
Midribs and sheaths 
2.05 
14 
Stem 
4. 16 
15 
Group 3a: 
Leaves 
1.67 
16 
Midribs and sheaths ... 
1.96 
17 
Young Group 3a- 
1.04 
IS 
Midribs and sheaths -. 
1. 14 
HILL NO. 3 (3 MONTHS OLD), STATION FIELD 32C 
Old Group 3: 
Leaves 
Midribs and sheaths 92.00 
Stem 94.72 
Rootstock 
82.29 
17.71 
0.248 
1.40 
17.46 
2.61 
0.04 
92.00 
8.00 
.035 
.44 
7.96 
.78 
.59 ' 
94.72 
5.28 
.030 
.56 
5. 25 
.25 
.82 
89.27 
10.73 
4.900 
45.70 
5.83 
2.13 
.57 
2.65 
1.37 
1.07 
2.70 
HILL NO. 4 (12 MONTHS OLD), WAIMEA FIELD W-S 
Old Group 2: 
Rootstock (apex). 
Rootstock (base) . 
Group 3a: 2 
Rootstock (apex) . 
Rootstock (base) . 
Group 3b: * 
Rootstock (apex) . 
Rootstock (base) 
0.70 
.60 
1.20 
1.30 
1.20 
0.21 
.04 
1.02 
.76 
1. 55 
1.22 
0.91 
.64 
2.22 
2.06 
2.30 
2.42 
1 " Apex " denotes the apical and " base " the basal half of the rootstock. 
1 Groups 3a and 3b samples of hill No. 4 were exceptionally vigorous and large. 
Samples Nos. 4 to 8, inclusive, Group 2, hill 1, showed the com- 
plete series of changes taking place in a mature plant from the for- 
mation of sugars in the leaves by photosynthesis to the storage of 
sugars as starch in the basal part of the rootstock. Starting with 
the leaves (fig. 15), the hexoses increased rapidly in progressing down 
the sheaths, midribs, and through the stem proper, then decreased 
in the apical part of the rootstock, finally falling practically to the 
same level in the basal part as in the leaves. The sucrose started 
