22 
BULLETIN 1483, U. S. DEPARTMENT OF AGRICULTURE 
progeny tree Xo. 12-19, propagated from the normal limb in the 
same parent tree from which the Corrugated strain progeny tree 
Xo. 12-17 was propagated, has produced only normal fruits during 
this same period. It is apparent that the parent Corrugated limbs 
from which the Corrugated strain progeny trees were propagated 
are inherently unstable and that this characteristic has been trans- 
mitted to their progenies by budding. 
Table 9. — Records of annual production of progeny trees which were propagated 
in 1915 from bud variations of the Corrugated strain of the Valencia orange 
compared with records from a normal Valencia tree which was propagated 
from a normal branch in one of the same parent trees 
Source of buds 
Number of fruits produced by progeny trees 
Prog- 
en y 
tree 
Corrugated strain 
Normal Valencia strain 
No. 
Par- 
ent 
tree 
Xo. 
Limb 
cs 
& 
cs 
C2 
1922-23 
1923-24 
1924-25 
CO 
CS 
1Q 
CS 
C5 
a 
es 
cs 
cs 
cs 
M 
CS 
cs 
cs 
o 
cs 
cs 
i 
1 
3 
CS 
"3 
o 
*C3 
12-17 
176 
176 
178 
186 
Limb bearing corru- 
gated fruits 
13 
54 
62 
114 
321 
9 
66 
133| 137 
163 1 356 
105 
120 
97 
37 
205 
338 
290 
169 
655^ 976 
12-19 
Normal yalencia limb. 
Limb bearing corru- 
21 63 
. 2 46 
?3 
1, 061 1, 061 
7321 916 
12-21 
2 
1 
13 
28 
26 76 
18 
49 
J 
73 
73 
224 
47 
12-27 
_do 
74 55 22 
156 
336 
359 695 
i One ribbed fruit produced this season. 
RIDGED STRAIN 
The trees of the Ridged strain have an upright habit of growth, 
develop a large number of suckers or rank-growing branches, and 
have dense foliage, the leaves being large and somewhat pointed. 
The considerable number of trees of this strain in many established 
Valencia orange orchards is accounted for by the cutting of suckers 
or vigorous nonfruiting branches as bud wood for propagation, for- 
merly practiced by propagators. With the use of this kind of bud 
wood more buds would be obtained from the suckering strains of 
trees than from the same number of trees of the heavily fruiting and 
nonsuckering strains. 
The typical Ridged strain fruits are large and globular, with 
coarse texture, and with broken longitudinal ridges. The rind is 
medium to thick, greenish yellow in color, the rag abundant and 
tough, and the juice only fair in quality and quantity. On account 
of the inferior appearance of the fruits they are of less commercial 
value than those of the Valencia strain. This strain has been found 
to occur in many established orchards as entire trees and as limb 
variations in Valencia trees that are otherwise normal. 
The performance records of three progeny trees which were prop- 
agated from two limb variations of the Ridged strain in otherwise 
normal Valencia trees are shown in Table 10 together with records 
of a comparable progeny tree propagated from a normal branch of 
a tree of the Valencia strain. It will be noted that the progeny 
trees of the Ridged strain limb variation have produced fruits of 
both the Ridged and Valencia strains each season, as was the case 
in the fruiting of the parent limbs. Typical fruits of the Ridged 
