By M. Wędzony, B. P. Forster, I. Żur (auth.), Dr. Alisher Touraev, Dr. Brain P. Forster, Dr. S. Mohan Jain (eds.)
The discovery of haploid Datura crops in 1964 initiated nice pleasure in plant breeding and genetics groups. contemporary years have witnessed a resurgence of actions specially in constructing protocols, determining genes and mechanisms and big scale advertisement take up.
The identity of controlling genes has pushed practical genomic reports which now dovetail with stories in gene expression, metabolism and adjustments in phone ultra-structure. around the globe absorb by way of plant breeders has been no much less amazing, and worthy haploid applied sciences are more and more patent secure. the serious job in haploid examine has additionally led to unforeseen findings with novel applications.
The middle of this booklet relies at the overseas symposium on "Haploidy in greater vegetation III", (Vienna 2006), which attracted best foreign specialists within the box. different invited contributions were incorporated to supply a rounded view of actions. The publication covers issues in: old Overviews; simple Biology; Genetics; Biotechnology; Breeding and Novel purposes. It as a result will entice undergraduate students,researchers and small and massive scale advertisement biotechnology companies.
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Additional info for Advances in Haploid Production in Higher Plants
Kluwer, Dordrecht/Boston/London, pp 141–150 Inagaki M (1985) Chromosome doubling of the wheat haploids obtained from crosses with Hordeum bulbosum L. Jpn J Breed 35:193–195 Inagaki M, Mujeeb-Kazi A (1995) Comparison of polyhaploid production frequencies in crosses of hexaploid wheat with maize, pearl millet and sorghum. Breed Sci 45:157–161 Inagaki MN, Tahir M (1995) Comparision of crossabilities of tetraploid wheat with Hordeum bulbosum and maize. Cer Res Comm 23:339–343 Inagaki MN, Pfeiffer WH, Mergoum M, Mujeeb-Kazi A (1998) Variation of the crossability of durum wheat with maize.
1986). A detachment of the egg cell at early stages of development has also been noted at least in onion and sugar beet (Ferrant and Bouharmont 1994; Musial et al. 2001), and suspensor attached embryos have been found in sugar beet and mulberry (Pedersen and Keimer 1996; Bhojwani et al. 2003). These reports, showing different responses in individual species should be seen in the context of the large variation in cell types of mature embryo sac. In angiosperms these are classified as monosporic, bisporic and tetrasporic, with the monosporic Polygonum type being the most common (for a review see Yadegari and Drews 2004).
V. 2009 35 36 B. Bohanec the term gynogenesis will be used in this sense as a substitute for the longer descriptive explanation – haploid induction from un-pollinated ovules, ovaries or flower buds. Historically, the first haploid plants originating from female gametophytes were described in Datura stramonium (Blakeslee et al. 1922). These haploid plants formed spontaneously were subsequently found in other species at low frequencies. A more recent review of spontaneously formed haploid plants is given by Palmer and Keller (2005) citing the occurrence of haploid plants in tobacco, rice, maize, Brassica and barley.