524 
Journal of Agricultural Research 
Vol. XXVIII, No. 6 
PROGENY PERFORMANCE RECORDS 
The performance records of the progeny trees of the two spotted-fruit limb 
variations of the Thomson and Washington strains and of the normal part of the 
parent tree of the Thomson strain are shown in Tables I, II, and III. 
Table I.— Number of oranges produced by the two. progeny trees which were propa¬ 
gated from the spotted-fruit limb variation in a tree of the Thomson strain 
Tree No. 
1920-21 
1921-22 
1922-23 
1923-24 
Total 
0 
1 
59 
155 
215 
25 
8 
92 
282 
407 
Total.:. 
25 
9 
151 
437 
622 
Table II.— Number of oranges produced by the comparative progeny trees proper- 
gated from a normal limb of the parent tree of the Thomson strain 
Tree No. 
1920-21 
1921-22 
1922-23 
1923-24 
Total 
1....-.-. 
10 
95 
92 
242 
439 
2.........— 
7 
107 
96 
370 
580 
Total. 
17 
202 
188 
612 
1,019 
It will be noted that the progeny trees of the spotted-fruit limb variations of 
the Thomson strain have been less productive thus far than the comparative 
progeny trees grown from buds secured from a normal branch of the parent tree. 
The fruits borne by the two progeny trees propagated from the limb variation 
in the tree of the Thomson strain have all developed the characteristic brown 
spots that were shown by the fruits on the parent limb, except four fruits in the 
crop of 1923-24 on tree No. 1, which had normal Washington texture with ribbed 
surfaces. The progeny trees propagated from the normal part of the same 
parent tree have produced only normal Thomson fruits. Typical fruits from one 
of the progeny trees propagated from the spotted-fruit limb variation are shown 
in Plate 3, A, and typical fruits from one of the progeny trees propagated from a 
normal limb of the .same parent tree are shown in Plate 3, B. 
The progeny trees propagated from the limb variation of the tree of the Wash¬ 
ington strain have produced a few normal unspotted fruits and a few brown- 
spotted yellow fruits with unspotted reddish orange sections in addition to the 
spotted fruits, as shown in Plate 4, A. These types are similar to those which 
have been occasionally found on the parent limb. Typical spotted fruits from 
the second progeny tree are shown in Plate 4, B. The number of fruits of these 
various types produced by the progeny trees is shown in Table III. 
Table III.— Types of fruit borne on the two progeny trees propagated from the 
spotted-fruit limb variation in a tree of the Washington strain 
Number of fruits produced 
Type of variations 
1920-21 
1921-22 
1922-23 
1923-24 
Totals 
Tree 
No. 1 
Tree 
No. 2 
Tree 
No. 1 
Tree 
No. 2 
Tree 
No. 1 
Tree 
No. 2 
Tree 
No. 1 
Tree 
No. 2 
Tree 
No. 1 
Tree 
No. 2 
Brown-spotted... 
11 
44 
7 
17 
45 
50 
134 
268 
197 
379 
Brown-spotted with reddish-orange 
sections___ 
0 
0 
4 
17 
1 
6 
20 
20 
25 
43 
N ormal W ashington... 
5 
0 
7 
2 
4 
7 
25 
2 
41 
11 
Washington texture and ribbed.. 
1 
0 
2 
0 
2 
0 
11 
1 
16 
1 
Total fruits__ 
17 
44 
20 
36 
52 
63 
190 
291 
279 
434 
