412 
LOCK : STUDIES IN PLANT BREEDING 
The agreement with theoretical expectation is so close that it 
appears reasonable to accept the hypothesis for the present. But it 
is hoped shortly to put it to the test by making crosses between the 
offspring of different types and a number of pure races. 
7-—Other Cresses. 
A number of further crosses were also made between the members 
of several different races of peas. These, so far as their decidedly 
feeble progeny in 'F 1 and F 2 allowed of estimating, afforded no excep¬ 
tions to the ordinary Mendelian expectation as regards the allelomor¬ 
phic characters which they exhibited, and which included representa¬ 
tives of cotyledon colour and shape, stature, inflation of pods, and 
colour of flowers and testa. 
The following is a list of such crosses. None of the progeny 
showed much promise of developing into hardy strains and con¬ 
sequently none were grown after F 2 . 
Parents. 
Number 
of Crosses 
Attempt¬ 
ed. 
Number i Seeds 
SuccessfulProduced. 
Characters 
Concerned.* 
1. —No. 1 X Nonsuch .. 
2. —Earliest Blue X 
5 
2 
4 
ABG x abg 
French Sugar 
3.—French Sugar X Ear¬ 
4 
1 
2 
bcDg xBCdG 
liest Blue 
4.—Satisfaction x French 
2 
2 
3 
BCdG x bcDg 
Sugar 
4 
4 
h ! 
Dxdj 
5. —No. 1 X Fillbasket.. 
6. —No. 1 X Earliest 
7 
5 
16 
Bxb 
Blue 
9 
3 
6 
Bxb 
7. — Earliest Blue X No. 1 
4 
2 
4 
b xB 
8.—No. 1 X Satisfaction 
3 
3 
14 
A x a 
9.—No. 1 X Eclipse 
2 
1 
3 
Bxb 
10.—No. 1 X British Queen 
3 
1 
6 
A x a 
11.—Satisfaction x Ring¬ 
leader 
1 
1 
4 
a x A 
12.—No. 2 X No. 1. 
3 
2 
5 
- ■ 
* A — smooth, a == wrinkled ; B = yellow, b= green ; C = testa grey, c - 
testa white ; D = pod inflated, d = pod constricted ; G = tall, g = dwarf. 
t Development of the parchment layer decidedly intermediate in F i, 
although the pods are obviously inflated. 
