Full TGIF Record # 5553
Item 1 of 1
Publication Type:
i
Proceedings
Author(s):Powell, Jerrel B.; Murray, J. J.
Author Affiliation:United States Department of Agriculture, Agricultural Research Service, Beltsville Agricultural Research Center, Plant Genetics and Germplasm Institute, Beltsville, Maryland
Title:The vegetative bud mutation technique for breeding improved Poa pratensis L.
Section:Breeding and seed production of grasses and legumes: Variability, establishment of new initial material (mutation, interspecific and intergeneric hybridizations)
Other records with the "Breeding and seed production of grasses and legumes: Variability, establishment of new initial material (mutation, interspecific and intergeneric hybridizations)" Section
Source:International Grassland Congress, Proceedings. Vol. 1, 1977, p. 317-319.
# of Pages:3
Publishing Information:Zurich, Etc., V. P.
Keywords:TIC Keywords: Buds; Mutations; Breeding improvement; Poa pratensis; Cultivar improvement; Rhizomes; Mesocotyl; Gamma radiation
Cultivar Names:Belturf
Abstract/Contents:"Kentucky bluegrass (Poa pratensis L.) is widely distributed in the U.S. and is important in grassland agriculture as pasture and in the urban environment as turf. Cultivar development in P. pratensis is slowed by a reproductive process that allows very few gametes to recombine (facultative apomixis). New approaches are needed to circumvent this limitation on breeding new cultivars. A fundamentally different approach to improvement is to induce mutations in vegetative buds of rhizomes, select the resulting mutations and increase them by seed (caryopses). The highly apomictic character of this species would maintain the mutant unchanged. This paper reports the results of experiments on 'Belturf', a genetically well-defined selection of Kentucky bluegrass. A total of 38 mutations were selected from approximately 3,000 plant propagules derived from gamma-ray treated rhizomes. Seeds collected from mutant plants gave progeny with 3.4% aberrant plants unlike their maternal parent while the control gave 4%. The percent sexuality indicated by aberrant plants was not significantly changed indicating the mutations can be fixed and propagated by seed. We believe that the vegetative bud technique is a promising breeding technique for P. pratensis L."
Language:English
References:8
Note:Tables
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Powell, J. B., and J. J. Murray. 1977. The vegetative bud mutation technique for breeding improved Poa pratensis L.. p. 317-319. In International Grassland Congress, Proceedings. Zurich, Etc., V. P.
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