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| Web URL(s): | http://turf.uconn.edu/pdf/research/reports/2013%20UConn%20Annual%20Turf%20Research%20Report.pdf#page=90
Last checked: 06/05/2014
Requires: PDF Reader
Notes: Item is within a single large file |
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| Publication Type:
| Report |
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| Author(s): | Yu, H.;
Thammina, C.;
Chen, J.;
Li, W.;
Yer, H;
Cao, K.;
Inguagiato, J.;
Li, Y. |
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| Title: | Development of new cultivars of perennial ryegrass for better lawns using mutation breeding techniques |
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| Section: | Scientific publications (abstracts & citations)
Other records with the "Scientific publications (abstracts & citations)" Section
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| Source: | 2013 Annual Turfgrass Research Report [Connecticut]. 2014, p. 81. |
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| Publishing Information: | Storrs, Connecticut: Department of Plant Science and Landscape Architecture, College of Agriculture and Natural Resources, University of Connecticut |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Breeding aims; Cultivar evaluation; Cultivar improvement; Growth period; Lolium perenne; Low maintenance turf
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| Abstract/Contents: | "Perennial ryegrass (PRG; Lolium perenne L.) is an important cool-season grass grown in lawns, athletic fields and golf courses. PRG is commonly used in residential and commercial lawns and maintained at an optimum mowing height of 5 to 9 cm. It is poorly adapted to low mowing heights (i.e. < 3 cm). Short-growth PRG mutants can reduce mowing frequency and may also be useful in fairways and tees where low mowing heights are desirable. Water requirement of PRG is also quite high. Therefore there is an increasing demand for short-growth turf with reduced mowing, irrigation and fertilizer requirements. We have used mutation breeding techniques to generate short-growth mutants of 'Fiesta 4' Perennial ryegrass. A number of mutant lines including GAD-1, GAD-2 and FN-5, exhibiting short-growth characteristics were selected from M2 generation. Mutant lines and the wild-type (WT) were vegetatively propagated and evaluated under greenhouse and field conditions. The data from greenhouse studies show that the GAD-1 and GAD-2 mutants had significantly lower leaf extension rates (29%, 27%) and leaf lengths (38%, 31%), respectively when compared to the WT. Similarly, under field conditions at maturity stage, GAD-1 and GAD-2 mutants had significantly lower canopy heights (27%, 31% reduction compared to WT), shorter internodes (45%, 40% shorter than WT) and shorter leaves (39%, 49% shorter than WT). Also, FN-5 mutant evaluated under field conditions had extremely shorter canopy (72% shorter than WT), shorter internodes (74% shorter than WT) and shorter leaves (56% shorter than WT). Because of their short-growth characteristics, all the 3 mutants need mowing less frequently, their requirements for water and fertilizer should also be reduced. Some of the short-growth mutants we have isolated may be commercially useful upon further characterization." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only!
"Annual Meeting of the American Society of Plant Biologists. 20-24 July. Providence, RI." |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Yu, H., C. Thammina, J. Chen, W. Li, H. Yer, K. Cao, et al. 2014. Development of new cultivars of perennial ryegrass for better lawns using mutation breeding techniques. Turfgrass Res. Rep. [Connecticut]. p. 81. |
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| Web URL(s):
http://turf.uconn.edu/pdf/research/reports/2013%20UConn%20Annual%20Turf%20Research%20Report.pdf#page=90
Last checked: 06/05/2014
Requires: PDF Reader
Notes: Item is within a single large file |
| 
MSU catalog number: b5428823 |
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Digitally in TIC by file name: uconn2014 |
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