Full TGIF Record # 71198
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Warnke, S. E.; Barker, R. E.
Author Affiliation:Warnke: Oregon State University; and Barker: USDA-ARS-NFSPRC
Title:Quantitative trait loci influencing annual growth habit in ryegrass
Section:Turfgrass science
Other records with the "Turfgrass science" Section
Meeting Info.:Minneapolis, MN: November 5-9, 2000
Source:2000 Annual Meeting Abstracts [ASA/CSSA/SSSA]. 2000, p. 163.
Publishing Information:[Madison, WI]: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America
# of Pages:1
Keywords:TIC Keywords: Reproduction; Forage; Lolium multiflorum; Lolium perenne; Genes; Flowering; Amplification fragment length polymorphisms; Restriction fragment length polymorphism
Abstract/Contents:"The transition from vegetative to reproductive development is of particular importance in forage and turfgrasses. The annual/perennial ryegrass complex provides an opportunity to study genes controlling flowering in cool-season forage and turfgrasses. An annual/perennial ryegrass, three generation pesudo F2 mapping population of 170 individuals was developed and is being evaluated for vernalization and photoperiod requirements. Progeny were scored from time to flowering at 8, 16, and 24 hour photoperiods under both vernalized and unvernalized conditions. Fluorescent AFLP markers were scored on the segregating progeny using a double pseudotestcross mapping strategy. More than two hundred markers were scored for each of the F1 parents and used to develop two genetic maps covering 971 and 1180 cM. Data for vernalization control of flowering fit a two gene dominant and recessive epistasis model similar to that observed in spring/winter barley crosses. RFLP markers linked to genes influencing vernalization and photoperiod requirements in spring/winter barley crosses are being evaluated to determine the level of synteny that exists between these two systems. Additional RFLP markers will be scored to examine synteny between ryegrass and other Triticeae genomes. Results of map development and QTL evaluation of flowering control will be presented."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Warnke, S. E., and R. E. Barker. 2000. Quantitative trait loci influencing annual growth habit in ryegrass. Annu. Meet. Abstr. p. 163.
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