Bibliography: leaves 143-161. / xi, 161 leaves : ill. ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / Pot exmeriments are undertaken during the winter growing season to examine Paraquat and Diquat resistance in the grass weed species Hordeum leporinum Link., H. glaucum Steud. and Vulpia bromoides SF Gray, and in the broadleaf weed Arctotheca calendula (L.) Levyns. / Thesis (Ph.D.)--University of Adelaide, Dept. of Crop Protection, 1994

Bibliography: leaves 143-161. Pot exmeriments are undertaken during the winter growing season to examine Paraquat and Diquat resistance in the grass weed species Hordeum leporinum Link., H. glaucum Steud. and Vulpia bromoides SF Gray, and in the broadleaf weed Arctotheca calendula (L.) Levyns.

Bibliography: leaves 147-163. / ix, 164 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / The aim of this thesis is to confirm the resistance status of three purported resistant weed species by herbicide screening of outdoor pot grown plants. Field experiments are set up to investigate changes in dormancy and seedbank life of the resistant populations over a three year period. After determining the herbicide resistance spectrum of the resistant biotypes, genetic crosses between resistant and susceptible plants are performed to follow the mode of inheritance of acetolactate synthase (ALS) resistance. "In vitro" ALS enzyme assays in the presence of various herbicides are carried out to reveal a modified ALS enzyme as the main mechanism of resistance in all cases. A molecular investigation of the ALS gene is performed to identify mutations responsible for endowing a resistant enzyme. / Thesis (Ph.D.)--University of Adelaide, Dept. of Crop Protection, 1996

Bibliography: leaves 147-163. / ix, 164 leaves : ill. (some col.) ; 30 cm. / Title page, contents and abstract only. The complete thesis in print form is available from the University Library. / The aim of this thesis is to confirm the resistance status of three purported resistant weed species by herbicide screening of outdoor pot grown plants. Field experiments are set up to investigate changes in dormancy and seedbank life of the resistant populations over a three year period. After determining the herbicide resistance spectrum of the resistant biotypes, genetic crosses between resistant and susceptible plants are performed to follow the mode of inheritance of acetolactate synthase (ALS) resistance. "In vitro" ALS enzyme assays in the presence of various herbicides are carried out to reveal a modified ALS enzyme as the main mechanism of resistance in all cases. A molecular investigation of the ALS gene is performed to identify mutations responsible for endowing a resistant enzyme. / Thesis (Ph.D.)--University of Adelaide, Dept. of Crop Protection, 1996