A Case of Mendelian Inheritance Complicated by Heterogametism and Mutation in OENOTHERA PRATINCOLA.

INT~ODUCTION ................................................................... Hypothesis of heterogametism ..................................................... Equivalence, within strain C, of pollen of Oenothera pratincola f. typica and mut. latifolia. . The Fa and F, generations of the cross mut. formosa from strain E X mut. latifolia from strainc .................................................................... The Fl and F2 generations of the cross f. typica strain C X mut. formosa strain E.. . . . . . . . The Fl and FZ generations of the cross mut. formosa strain E X f . typica strain E . . . . . . . . The F, and F2 generations of various crosses between f. typica M (the new Mendelian strain) and f . t y p k a of strain C, f . typica of strain E, and Iput. formosa.. ............. Various pedigrees of plants used in crosses. ........................................ DISCUSSION. .................................................................... SUMMARY. .. ......... .................... . . . . . . . . . . . . . . . . . . . . . . . . . LITERATURE CITED. ............................................................. APPENDIX-TABLES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 2 4