390 
LOCK : STUDIES IN PLANT BREEDING 
The crop obtained in this instance was so far satisfactory that it is 
worth while to sum up the total proportions of seeds produced by the 
plants of different constitutions. Thus the 14 AaBb plants bore 
altogether the following seeds :— 
Total 846—sm. y. 477 ; sm. g. 165 ; wr. y. 150 ; wr. g. 54. The 
expectation being for 848—sm. y. 477; sm. g. 159; wr. y. 159; 
wr. g. 53. 
The 6 AaB plants produced the following : sm. y. 311 ; wr. y. 103. 
The 9 Aab plants produced the following : sm. g. 283 ; wr. g. 104. 
The 8 ABb plants produced the following : sm. y. 189 ; sm. g. 51. 
The 6 aBb plants produced the following : wr. y. 355 ; wr. g. 105. 
All four cases together give the proportion 1,138 : 363 or 75’8 : 
24-2. 
A further generation was grown from the seeds (F 3 ) of those plants 
which are distinguished by a f in the preceding table ; with the 
following results :— 
621.1.1 sm. g. seeds only. 15 plants bore 440 seeds—all sm. g. 
(LJ- 
621.2.2. (a) sm. y. seeds gave rise to 8 plants, of these, 3 bore only 
sm. y. seeds 43 in number ; 5 bore sm. y. and wr. y. 
seeds in the proportion 89 : 31. 
(b) wr. y. seeds : 5 plants with 96 seeds—all wr. y. 
623.1.9. (a) wr. y. seeds—22 plants, 4 with 140 wr. y. only ; and 
18 with 358 wr. y.: 120 wr. g. 
(b) wr. g. seeds : 15 plants with 380 seeds—all wr. g. 
623.1.11. wr. y. seeds only : 16 plants with 273 wr. y. seeds. 
623.2.3. (a) wr. y. seeds : 8 plants, 7 with wr. y. only—81 seeds, 
and 1 with 10 wr. y. : 4 wr. g. 
(b) wr. g. seeds : 3 plants with 41 wr. g. seeds only. 
(a) sm. y. seeds gave rise to 20 plants :— 
(al) 10 plants with 97 sm. y., 28 sm. g., 37 wr.y., 14 wr. g. 
(a2) 6 plants with sm. y. and sm. g. seeds : 100 : 28. 
(a3) 3 plants with sm. y. and wr. y. seeds : 23 : 8. 
(a4) 1 plant with 9 sm. y. seeds only. 
(b) sm. g. seeds—-8 plants : 4 with 60 sm. g. seeds only, 
and 4 with 58 sm. g. : 25 wr. g. 
623.4.1. 
