The cytogenetics of a Triticum turgidum x Psathyrostachys juncea hybrid and its backcross derivatives
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ArticleLanguage: En Publication details: 1995ISSN: - 1432-2242 (Revista en electrónico)
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| Article | CIMMYT Knowledge Center: John Woolston Library | CIMMYT Staff Publications Collection | Look under journal title (Browse shelf(Opens below)) | 1 | Available | 999475 |
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| Look under journal title Development of DNA markers based on randomly amplified polymorphic sequences in a Triticum aestivum L. x Thinopyrum bessarabicum amphiploid | Look under journal title Physiological and morphological traits associated with spring wheat yield under hot, irrigated conditions | Look under journal title Implications of the variance effective population size on the genetic conservation of monoecious species | Look under journal title The cytogenetics of a Triticum turgidum x Psathyrostachys juncea hybrid and its backcross derivatives | Look under journal title Production risk and the evolution of varietal technology | Look under journal title Visualization of Secale cereale DNA in wheat germ plasm by fluorescent in situ hybridization | Look under journal title Comparison of polyhaploid production frequencies in crosses of hexaploid wheat with maize, pearl millet and sorghum |
Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0040-5752
Psathyrostachys juncea (2n = 2x = 14, NN), a source of barley yellow dwarf luteovirus (BYDV) resistance with tolerance to drought and salinity, was successfully hybridized in its autotetraploid form (2n = 4x = 28, NNNN) as the pollen parent to durum wheat (Triticum turgidum [T. durum]). The 2n = 4x = 28 (ABNN) F1 hybrid has a mean meiotic metaphase I configuration of 20.29 univalents + 0.29 ring bivalents + 3.36 rod bivalents + 0.14 trivalents. Spike length, internode length, glume awn length and lemma awn length, as well as the general spike morphology of the F1 hybrid, are intermediate with those of the 2 parents. Pollinating the ABNN F1 hybrid gave backcross (BC1) derivatives of an amphiploid (AABBNN) that expresses limited self-fertility. BC2 derivatives were obtained from these plants. Direct transfers of useful genes from P. juncea to wheat would require substantial genetic manipulation strategies. Both conventional and novel methodologies, which may complement each other, and so facilitate reaching an agricultural objective end point, are addressed
English
WP|Springer|R95ANALY|1