Note on an orderly dissimilarity in inheritance from different parts of a plant

In a recent paper we described the genetic behaviour of the peculiar, wild-looking, “rogue” peas which appear as the offspring of the cultivated types. In several respects the phenomena are as yet without parallel. The genetic constitution of the F1 plants raised by crossing types with rogues was especially remarkable. These plants, as young seedlings, are intermediate between types and rogues, but, with rare exceptions, as they mature they become normal rogues and behave genetically exactly like pure-bred rogues, producing only rogues as offspring. We conjectured that a segregation of factors takes place in the soma, such that the type elements are left behind in the base of the F1 plant and are thus excluded from the germ lineage. The observations here described, though very imperfect, are entirely consistent with the facts related above and with the interpretation offered. As a season must elapse before the evidence can be materially increased, we venture to make this preliminary record.