stout: pollinations in cichorium intybus 



38= 



be self-sterile in the experiments of the previous year, data for 

 which are given in table i . The data for the crosses attempted 

 with these plants are given in table 9. 



TABLE 9 

 Data for crosses involving plant A and various of its progeny derived by open- 

 pollination 



Record for heads pollinated 



Heads 



with 

 seed 



Number of seeds per head 



A XA7... 

 A8... 

 A9... 

 A17. . 

 A19. . 



A2J. . 



A27. . 

 XA... 

 A8.. 

 Ag.. 

 A 19. 

 A23. 

 A27. 

 A... 

 Ay.. 

 Ag.. 

 A17 . 

 Aig. 



A2J. 



A27. 



XA... 



Aig. 



A27. 



A17 XA.. 



A7. 



A7 



A8 



Ag 



Aig 



A 23 



A 27 



X 



A8... 



Aig. . 



A23.. 



A27. . 

 XA.... 



A7... 



A8... 



A27. . 

 XA.... 



A7... 



A8... 



Ag... 



Aig. . 

 XA.... 



A8... 



Ag... 



Aig. . 



A23.. 



5 

 4 

 10 

 o 

 o 

 o 



14 



o 

 o 

 II 

 o 

 o 



2 



I 

 o 



2 

 O 

 O 

 O 

 2 

 II 

 I 

 O 

 O 



4 

 4 

 I 

 o 

 6 

 o 

 I 

 2 

 8 

 o 



3 

 2 

 8 

 o 

 2 

 2 

 5 

 5 

 2 



3, 5, 7, 8, 9 

 7, 8, 17, 17 

 7, 9, 10, 10, II, 13, 13, 13, 15, 17 



3, 3, 3, 6, 11,11, 12, 13, 13, 14, 14, 15, 15,15 

 2, 4, 6, 6, 6, 8, 8, 8, 9, 10, II 



5. II 

 10 



5, 14 



6,7 



5, 5, II, 12, 13, 13, 13, 14, 15, 18, 18 



5 



1, 3. 5, 6 



3, 6, 7, 8 

 I 



3. 4. 5, 5, 7, 9 



ID 



6, 6 



5, 6, 7, 7, 7, 8, II, II 



2, 3. 13 



4, 7 



7, 7, 8, 8, II, 12, 14, 15 



10, 12 



1. 2 



2, II, 13, 14, 16 



6, 7, II, 12, 12 

 6,9 



No one plant involved in these experiments proved to be either 

 fertile or sterile to all plants with which it was crossed. The 

 26 



