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The California State University

Publications

  • Hipp, A., P. Rothrock, R. Whitkus and J. Weber. 2010. Chromosomes tell half of the story. Molecular Ecology: 3124-3138.

  • Anacker, B., N. Rank, D. Huberli, M. Garbelotto, S. Gordon, T. Harnik, R. Whitkus and R. Meentemeyer. 2008. Susceptibility to Phytophthora ramorum in a key infectious host. New Phytologist: 756-766.

  • Roalson, E.H., A.G. McCubbin and R. Whitkus. 2007. Chromosome evolution in the Cyperales. Aliso 23: 62-71.

  • Lowrey, T., R. Whitkus and W. Sykes. 2005. New Species Of Tetramolopium (Asteraceae) from Mitiaro, Cook Islands. Systematic Botany 30: 448-455.

  • Lukaszewski, A.J., K. Rybka, V. Korzum, S.V. Malyshev, B. Lapinski and R. Whitkus. 2004. Genetic and physical mapping of homoelogous recombination points involving whet chromsoosme 2B and rye chromosome 2R. Genome 47: 36-45.

  • Ehdaie, B., R. Whitkus and J.G. Waines. 2003. Root biomass, water-use efficiency and performance of wheat-rye translocations of chromosomes 1 and 2 in spring bread wheat 'Pavon'. Crop Science 43: 710-717.

  • Georgiady, M., R. Whitkus and E. Lord. 2002. Genetic analysis of traits distinguishing outcrossing and self-pollinating forms of currant tomato, Lycopersicon pimpinellifolium (Jusl.) Mill. Genetics: 333-344.

  • Whitkus, R., H. Doan and T. Lowrey. 2000. Genetics of adaptive radiation in Hawaiian species of Tetramolopium (Asteraceae). III. Evolutionary genetics of sex expression. Heredity: 37-42.

  • Okada, M., T.K. Lowrey and R. Whitkus. 2000. Quantitative morphological variation in Tetramolopium (Asteraceae) in Hawaii and the Cook Islands. Plant Systematics and Evolution 221: 1-13.

  • Brunell, M., A. Lukaszewski and R. Whitkus. 1999. Development of arm specific RAPD markers for rye chromosome 2R in wheat. Crop Science: 1702-1706.

  • Brunell, M.S. and R. Whitkus. 1999. Analysis of cross-compatibility in Eriastrum densifolium (Polemoniaceae). Plant Systematics and Evolution 215: 241-254.

  • Heaton, H.J., R. Whitkus and A. Gomez-Pompa. 1999. Extreme ecological and phenotypic differences in the tropical tree chicozapote (Manilkara zapota (L.) van Royen) are not matched by genetic divergence: a RAPD analysis. Molecular Ecology 8: 627-632.

  • Whitkus, R. 1998. Genetics of adaptive radiation in Hawaiian and Cook Island species of Tetramolopium (Asteraceae).. Genetics 150: 1209-1216.

  • Whitkus, R., M. de la Cruz, L. Mota-Bravo and A. Gomez-Pompa. 1998. Genetic diversity and relationships of caco (Theobroma cacao L.) in southern Mexico. Theoretical and Applied Genetics 96: 621-627.

  • Brunell, M.S. and R. Whitkus. 1998. Assessment of morphological variation in Eriastrum densifolium (Polemoniaceae): implications for subspecific delimitation and conservation. Systematic Botany 23: 351-368.

  • Okada, M. and R. Whitkus. 1997. Genetics of adaptive radiation in Hawaiian and Cook Islands species of Tetramolopium (Asteraceae.. American Journal of Botany 84: 1236-1246.

  • Brunell, M.S. and R. Whitkus. 1997. RAPD marker variation in Eriastrum densifolium (Polemoniaceae): implications for subspecific delimitation and conservation. Systematic Botany 22: 543-553.

  • Okada, M., R. Whitkus and T.K. Lowrey. 1997. Genetics of adaptive radiation in Hawaiian and Cook Islands species of Tetramolopium (Asteraceae: Astereae): I. nuclear RFLP marker diversity. American Journal of Botany 84: 1236-1246.

  • Ellstrand, N., R. Whitkus and L. Rieseberg. 1996. Distribution of spontaneous plant hybrids. Proceedings of the National Academy of Sciences of the United States of America: 5090-5093.

  • Whitkus, R. 1992. Allozyme variation within the Carex pachystachya complex (Cyperaceae). Systematic Botany 17: 16-24.

  • Whitkus, R., J. Doebley and M. Lee. 1992. Comparative genome mapping of sorghum and maize. Genetics: 1119-1130.

  • Whitkus, R. 1991. Chromosome counts of Carex section Ovales. Botanical Gazette 152: 224-230.

  • Crawford, D. and R. Whitkus. 1988. Allozyme divergence and the mode of speciation for Coreopsis gigantea and C. maritima (Compositae). Systematic Botany 13: 256-264.

  • Whitkus, R. 1988. Experimental hybridizations among chromosome races of Carex pachystachya and the related species C. macloviana and C. preslii (Cyperaceae). Systematic Botany 13: 146-153.

  • Whitkus, R. and D. Crawford. 1988. Systematics and evolution of the Carex pachystachya complex (Cyperaceae). .

  • Crawford, D., B. Port and R. Whitkus. 1988. Allozyme Variation within and between Populations of Coreopsis latifolia (Asteraceae). Plant Species Biology 3: 1-5.

  • Wolf, S. and R. Whitkus. 1987. numerical analysis of flavonoid variation in Arnica subgenus Austromontana (Asteraceae). American Journal of Botany 74: 1577-1584.

  • Whitkus, R., F. Bryan, D. Les and L. Tyrrell. 1987. Genetic Structure in a Heterocyanic Population of Trillium sessile (Lilliaceae). Plant Species Biology 2: 67-73.

  • Whitkus, R. 1985. FORTRAN program for computing genetic statistics from allelic frequency data. The Journal of Heredity 76: 142.

  • Whitkus, R. and J. Packer. 1984. contribution to the taxonomy of the Carex macloviana aggregate (Cyperaceae) in western Canada and Alaska. Canadian Journal of Botany 62: 1592-1607.

  • Whitkus, R. 1983. taxonomic investigation of the Carex macloviana D'Urv. aggregate in western Canada and Alaska. .

  • Whitkus, Richard. 1981. taxonomic investigation of the Carex macloviana D'Urv. Aggregate in western Canada and Alaska. Edmonton

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