1988. cylindrica and cultivated wheat and concluded that there is little chance of a new weed species emerging due to high levels of sterility. Cytol. The stamens are smaller and produce fewer pollen grains (1000-3800 per anther; 450,000 per plant) compared to other cereal grasses. The minimal temperature for germination of T. aestivum seeds is between 3 and 4°C. vulgare, T. compactum, T. sphaerococcum, T. vavilovii, T. macha, and T. spelta), as the genomes are identical (Körber-Grohne, 1988). and Kasha, K.J. The Inheritance of Rust Resistance. Intergeneric Hybridization of Cereals and Other Grasses. Hybrids between T. aestivum and Intermediate Wheatgrass, Agropyron intermedium have been reported in Russia where fertile plants were successfully produced (Tsvelev, 1984). Crop Genetic Resources for Today and Tomorrow. Search for related documents in the Guidance Document Repository, Biology Document BIO1999-01: A companion document to the Assessment Criteria for Determining Environmental Safety of Plant with Novel Traits, Part C - The Close Relatives of T. aestivum, Part D - Potential Interactions of T. aestivum with Other Life Forms During its Life Cycle. There are no wild Triticum species in Canada (Feldman, 1976). Cytogenetics of Triticale. The PNTs may be developed using traditional plant breeding techniques or other methodologies such as recombinant DNA technologies. View and Download PowerPoint Presentations on Inflorescence PPT. In terms of plant adaptation, hexaploid wheat cultivation was adapted to cool climates due to the contribution of winter hardiness traits present on the "D" genome. These grass species are adapted to Canada and are known to colonize disturbed habitats such as uncultivated fields and roadside areas. Hucl, P. 1996. Comparison of the Crossability of Rye (Secale cereale) and Hordeum Bulbosum onto Wheat (Triticm aestivum) Can. The primary florets of a spikelet flower first, then the secondary and so on. Knott, D.R. Overview of the Jointed Goatgrass Problem. Similarly, the different wheat species also contain some multiple of the basic haploid set of seven chromosomes. Each culm produces an inflorescence or composite spike, the basic unit of which is termed the spikelet. The vegetative state of the plant is characterized by tillers bearing axillary leafy culms. 30:59-62. An Interpretation of the Hydrodynamics of Pollen. 1996. The Prairie Registration Recommending Committee for Grain) will decide whether to support the breeder's application for variety registration. 41:109-123. 1987. Jain, S.K. The flowers are borne in groups of two to six in structures known as spikelets, which later serve to house the subsequent two or three grains produced by the flowers. Once the temperature begins to rise, the winter wheat plant will resume growth and switch to a reproductive stage resulting in head development. 1994. The male flowers have three stamens that are generally gold or green in color. Of the genera most closely related to Triticum, only one species of the genus Agropyron is native and widespread in Canada. Floral Biology attempts to show how floral biologists conduct their experiments and what techniques they employ in floral biology. Within Canada, the primary production areas are the prairie provinces of Manitoba, Saskatchewan, and Alberta, although there are some production areas in the eastern provinces. Falk, D.E. Proceedings of Pacific Northwest Jointed Goatgrass Conference, Pocatello, ID. Ideally, both male and female parental plants would possess open flowering spikelets. In: Heyne, E.G. crassa; Ae. They occur in Canada as naturalized and cultivated plants and are used as specialized forage crops or for soil stabilization purposes. Because the floral biology of most wheat varieties is ill-adapted to cross-fertilization , a “redesigning” of the cleistogamic wheat flower has been suggested .