MAGANLAL L. PATEL 99 
The supposed connection between the shape and size of the bolls obviously 
does not exist. The highest ginning percentage in the series has been given 
by a plant with small bolls which were spherical, and the lowest by one which 
had large and spherical bolls. 
Another correlation which has been announced to occur is that between 
the size of seed and yield which plants produced from it might be expected to 
give. This was stated by Cook! in 1908, where he describes the advantages 
of light sesds, heavy seeds and large-seeded varieties. On the strength of 
experiments by Shoemaker on ** Triumph ” cotton, he connected the increase 
in yield rather with the development of large seeds. That there is no necessary 
connection between heaviness in seed and the yield of a variety in Goghart 
cotton is indicated by the following table. A26 was a heavy-seeded strain ; 
C22 on the other hand was a light-.eeded strain, the seeds being 5 per cent., 
78 percent., 10 per cent. and 19 per cent. lighter than those of A26 in the 
four years 1916-17, 1917-18. 1918-19 and 1919-20 respectively. The table 
indicates the yield per plant in these four years. 
Yield of kapas per plant. 
1916-17 1917-18 1918-19 1919-20 
Strain 
Grammes | Grammes | Grammes | Grammes 
A26 ( heavy-seeded ) 2°90 7°87 5°38 791 
C22 ( light-seeded ) 4°44 4°94 6°30 7°88 
The yield and weight of seed, therefore, seem to depend on altogether 
different factors, and no connection seems to exist between them whatsoever. 
One more point in correlation arises. It has been suggested by Gammie?, 
though he gives no evidence whatever in favour cf his assertion, that a tall 
shortly branched form of the cotton plant “appears to be the more productive 
in all species of Indian cottons.’”? A stetement which might be interpreted to 
mean the same was issued by Kottur? in 1917, but he has since made it clear 
that the tallness of the plant has, in his opinion, nothing to do with the yield, - 
but rather the proportion between the different types of branches ( fruiting ) 
on the plants. In view of Gammie’s statement, however, it was necessary 
to ascertain whether there was any connection between tallness and yield, as 
1U. 8. Dept. Agr. Bur. Plant Industry, Circular 11, 1908. 
2 Report of the Imperial Cotton Specialist, 1916-17, p. 3. 
3 Bulletin no. °4, Dept. of Agri. Bombay, 1917. 
