126 STUDIES IN GUJARAT COTTONS 
results which differ slightly from those noticed by Leake. According to our 
observations, while the leaf-factor of the leaves on the primary fruiting 
branches is the smallest (as Leake states ) the leaves on the main stem them- 
selves vary a good deal and the results differ with different varieties. While 
the leaves on the lower part of the main stem in Broach deshi have a smaller 
leaf-factor than those on the monopodia, those on the upper give a higher 
figure. In Goghari, on the other hand, our figures indicate that it is larger 
on the leaves of the main stem. The average figures for the different types 
of leaves in 1919-20 are as under :— 
Leaf-factor. 
Broach deshi strains Goghari strains 
Primary truiting branches .. aie So 1-08 0°92 
Lower portion of the main stem ave 1-14 114 
Upper portion of the main stem ( Peewcs aes the 
15th leaf ) * a 56 2 1°38 pI ie! 
Monopodia ae AC exe are 1:24 1-08 
3. Growth period of various types of branches. There are, as has been 
frequently noted in connection with the cotton plant, four types of branches 
in connection with which flowers and bolls may be formed. The period of 
flowering and the length of time that the flowering lasts depends very largely 
on the relative development of each of these types of branches and hence it 
is of some importance to ascertain the growth period of each type as one of 
the factors which determines the yielding capacity of the plant. The various 
types of branches involved are :— 
(1) The primary fruiting branches or sympodia. 
(2) The monopodia or primary vegetative branches which bear 
secondary fruiting branches. 
(3) The axillary vegetative branches occurring in the axil of the leaves 
on the main stem, by the side of the primary fruiting branches, which also 
bear fruiting branches. 
(4) The axillary vegetative branches occurring in the axils of the leaves 
on the primary fruiting branches, which also themselves bear fruiting 
branches. 
Now the first flowering in this type of cotton occurs on the primary 
fruiting branches, the next on the fruiting branches arising from the 
monopodia, and last come the flowers borne in connection with the 
axillaries. It has been stated by Leake! that, in his experiments on this 
type of herbaceum cotton, the vegetative period or the period between sowing 
and the appearance of the first flower was about 207 days, and he draws the 
1 Mem, of the Dept. of Agri. India, Bot. Ser., VI, no. 4 ( 1914 ; 
