STERILITIES OF WILD AND CULTIVATED POTATOES. 
13 
Table 1. — Potato crosses grouped according to pollen parent recorded by the United 
States Department of Agriculture during the 9-year period from 1914 to 1922, inch - 
si a — Continued. 
Date of 
crossing. 
Parents. 
Classes 
involved Q , 
in cross. Flowers ^lii 
crossed. produced 
Aug. 6. 1917 
Aug. 8, 1914 
Aug. 10.1914 
Aug. 6.1917 
Aug. 5. 1917 
Do 
Do 
Do 
Do 
Aug. 6, 1917 
Do 
Aug. 8, 1914 
Aug. 6.1917 
Aug. 11,1915 
Julv 2S.1916 
Aug. 7, 1914 
Do 
Do 
Aug. J.. 1914 
Do.. 
Aug. 7, 1914 
Aug. 8,1914 
Do 
Aug. 7,1914 
Do 
Do 
Do 
Russet RuralxPetronius 
Rust Proof X Petronius 
Sir Walter Raleighx Petronius 
do 
Solanumsp. (S. A. 
Solanumsp. (S. A. 
No. 24) X Petronius 
No. 37 )x Petronius. 
Solanum sp. (S. A. No. 69) X Petronius. 
Solanum sp. (S. A. No. 72)X Petronius 
Solanum sp . (S. A . No. 92) x Petronius 
Solanumsp. (S.A. No. 1 48) X Petronius 
Solanumsp. (S. A. No. 152) X Petronius 
State of Main ex Petronius 
Tuquerrena Blanca (S. A. No. 182) x Petronius. 
White McCormickX Petronius 
Yellow-fleshed variety X Petronius 
Total and average . 
American WonderxPojata. 
Beauty of HebronXPojata. 
Early VicktorxPojata 
FarmerX Pojata 
Gold Coin X Pojata 
Irsh Cobbler X Pojata 
Late BlightlessX Pojata 
McKinley X Pojata 
New Scotch RosexPojata. . 
Seneca BeautvX Pojata 
White Beauty X Pojata 
White Elephant X Pojata . . . 
Total and average . 
Aug. 7.1914 
Do. 
Aug. 8, 1914 
Do. 
Aug. 7,1914 
Do. 
Early Eureka X Potentat. . . 
Early Michigan x Potentat. . 
Farmer X Potentat 
Green Mountain X Potentat. 
Irish Cobbler X Potentat 
Seneca Beaut v X Potentat. . 
AX- 
AX— 
AX- 
AX- 
Total and average . 
July 22, 1919 Black Christv X Seedling 14232. 
Julv 21. 1919 Seedling 24642 X Seedling 14232. 
July 29, 1919 Seedling 38774 X Seedling 14232. 
Total and average 
BX- 
AX- 
1921 America X Seedling 24642 
1922 Arran Rose X Seedling 24642. . . 
1919 . Black Christv X Seedling 24642. 
1920 do 
Julv 9 
Julv 19 
July 22, 
Julv 26! 
Julv 23. 1920 : British Queen X Seedling 24642 
July 12" 
Julv " 
July 
July 
1922 
o 
17. 
22, 
14. 
July 18, 
Julv 15, 
Julv 30, 
July 20. 
July 23. 
Julv 14, 
July 16. 
July 26, 
Aug 
Julv 22, 
Mav 27, 
May 29. 
May 31. 
June 5, 
Julv 14. 
July 
Julv 22, 
Julv 23, 
July 12. 
1922 
1919 
1921 
1921 
1921 
1921 
1920 
1920 
1921 
1921 
1921 
1921 
1922 
1922 
1922 
1922 
1922 
1922 
1922 
1920 
1920 
1922 
Charles Downing X Seedling 24642.. 
do 
ClioX Seedling 24642 
do 
....do 
....do 
....do 
Cummings' Pride X Seedling 2 642. 
Dargill Earlvx Seedling 24642 
Earlv Ohiox Seedling 24642 
Early Rose x Seedling 24642. 
Io 
Edzell Bluex Seedling 24642 . 
Epicurex Seedling 24642 
do 
AX1 
AX1 
BX1 
BX1 
BX1 
BX1 
BX1 
AX1 
AX1 
AX1 
AX1 
AX1 
BX1 
AX1 
AX1 
AX1 
AX1 
AX1 
AX1 
AX1 
AX1 
AX1 
AX1 
AX1 
AX1 
AX1 
AX1 
AX1 
35 
98 
20 
44 
40 
11 
12 
13 
5 
8 
27 
Ifi 
18 
10 
:> 
1 
11 
4 
14 
— 
y 
41 
7 
20 
23.53 

66.67 
8.16 
50.00 
26.09 
9.09 
22.22 
6.67 
c.GO 
6.82 
60.00 



20.00 
16.67 
25.00 


5.56 
80.00 
81.58 



7.14 
95. 35 
51.22 

10.00 
