The genetics of leaf-laciniation was studied quantitatively in an intra-hirsutum cross between varieties H. 14 and SA 594. The gene effect was mainly additive, with considerable additive x additive component. One major gene with some modifiers controlled the expression of leaf-laciniation. These results were also confirmed by the actual F2 segregation.
There was no correlation between leaf-laciniation on the one hand and boll-number per plant and single plant yield on the other.