Experiment with Sweet Peas, illustrating reversion on crossing, followed by the appearance of numerous types in next generation.
The varied forms in the F_2 generation appear in definite proportions and a certain number of plants of each variety are already "fixed," and have been shewn, by further experiment, to breed true to type.
Experiment with Sweet Peas, illustrating reversion in structural characters.
A cross between the ordinary "Cupid" dwarfs and the half-dwarf "Bush" form results in a complete reversion to the normal tall habit such as occurs in the wild sweet pea. A further generation raised from these reversionary talls consists of talls, Bush, Cupids, and a new form, the "Bush-Cupid." These last combine the erect bush-like habit of growth with the dwarfness of the Cupid.
