Jtuie 9 > X923 
Rogtie Types in Garden Peas 
821 
The exceptional intermediate types occurred in the F2 culture 0.322, 
whi^ also contained 23 rogues and i out-crossed plant. Seven other 
families from the original cross which produced culture 0.322 gave only 
rogues in the Fg generation. 
Tabl^ IV.— Back-crosses Gradtis typeXiGradtis typeXGradus rogue) in Fg generation 
Culture No. 
Rogues, 
Others. 
Crosses. 
Culture No. 
Rogues. 
Others. 
Crosses. 
1920: 
0.2i6. .. . . 
3 
0.217. 
2 
0.292. 
36 
0293. 
25 
0.294. 
23 
0 . 29 S. 
23 
0.296. 
2 
0.297. 
31 
0.298. 
18 
0.299. 
II 
0.300. 
II 
0.301. 
38 
0.302. 
12 
0.303. 
27 
0.304. 
I 
0-305. 
6 
0.306. 
27 
0.307. 
17 
0.308. 
20 
0.309. 
20 
0.310. 
16 
0.3II. 
44 
0.312. 
33 
0.313. 
17 
0.314. 
10 
0.315. 
44 
0.316. 
45 
0.317. 
38 
0.318. 
7 
0.319. 
16 
0.320. 
31 
0.321. 
3 
0.322. 
23 
0.324. 
35 
1920—Contd, 
0.325. 
23 
0.326. 
16 
0.327. 
22 
0.328. 
17 
0.329. 
40 
0.330. 
31 
0.331. 
41 
0.333. 
18 
0.334. 
54 
0.335. 
22 
0.336. 
36 
0-338. 
73 
0.341. 
18 
0.342. 
21 
0.343. 
20 
0.344. 
6 
0-345 . 
28 
0.346. 
20 
0.347. 
15 
0.348. 
23 
0.349. 
18 
0-350. 
23 
0.351. 
15 
0.352. 
30 
0.353. 
26 
0.355. 
7 
0-356. 
13 
0.357. 
18 
0.358. 
27 
0.368. 
14 
0.369. 
22 
0.370. 
15 
Total... 
1,487 
statistical study OF THE INHERITANCE OF STIPULE SHAPE IN GRADUS 
ROGUE AND GRADUS TYPE 
In order to get a more exact comparison of the rogues and types, on the 
one hand, and the Fj and Fj generations of hybrids between the two, 
measurements of the length and width of the stipules from the fourth to 
the ninth node were made in the various categories of plants. The ratio 
of width to length of stipule was then calculated. Because of disease 
and mechanical injury the same number of stipules could not be meas¬ 
ured at each node in each group of plants. The class frequency distribu¬ 
tions (Table V) are, therefore, expressed as percentages of the total num¬ 
ber of variates. In this manner 49 pure type plants, 43 pure rogues, 69 
Fi hybrids, and 104 Fj plants were measured. 
