Embryo sac and early embryo development in the salmonberry (Rubus spectabilis)

Abstract

Embryo sac development was studied in two clones of salmonberry. U.B.C. clones I-37 and II-4 were used in the study. Clone II-4 is a ruby-fruited seedling of a gold-fruited parent. Clone I-37 is the gold-fruited seedling of a ruby-fruited parent. Reproduction was sexual and embryo development normal in this diploid species. Embryo sac development was of the normal or Polygonum type and abnormalities such as multiple embryo sacs and abbreviated integument were also found. Very generally, the development of embryo sacs in both clones was similar.