Hordeum jubatum L., Hordeum brachyantherum nevski, and Hordeum jubatum var. caespitosum (Scribn.) Hitchc. Plants from sites in Utah and Idaho were grown and examined in order to determine whether or not hybridization with subsequent introgression occurs among the species and if so whether there is a difference in the relative amount of gene flow between the parent species H. jubatum and H. brachyantherum in different environments. Hybridizations and morphological analyses were made using standard procedures. Biochemical analyses were made by comparing paper chromatograms of leaf extracts of plant specimens. The results indicate that in Utah populations sampled, hybridization with subsequent introgression is present. Furthermore, introgression has apparently resuted in the formation of stable introgressants in Utah. Idaho populations ampled, from a high mountain area, appeared to be stable and devoid of hybridization and introgression. Possible exlanations concerning the apparent lack of hybridization and introgression are given.
College and Department
Life Sciences; Plant and Wildlife Sciences
BYU ScholarsArchive Citation
Babbel, Gareth Roz, "Biochemical and morphological analyses of the hordeum jubatum-brachyantherum-caespitosum hybrid complex" (1969). Theses and Dissertations. 8017.