Full TGIF Record # 5182
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Web URL(s):http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.1978.tb00828.x/epdf
    Last checked: 10/02/2015
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Author(s):Hides, D. H.; Wilkins, P. W.
Author Affiliation:Welsh Plant Breeding Sta., Aberystwyth, UK
Title:Selection for resistance to ryegrass mosaic virus and crown rust (Puccinia coronata Corda) in Italian ryegrass populations
Source:Journal of the British Grassland Society. Vol. 33, No. 4, 1978, p. 253-260.
Keywords:TIC Keywords: Lolium multiflorum; Ryegrass mosaic virus; Puccinia coronata
Abstract/Contents:Glasshouse inoculations showed marked differences in resistance to both RMV and P. coronata among 8 unselected populations of Lolium multiflorum. Two generations of selection for crown rust resistance led to a significant improvement in all 8 populations, while 1 generation of selection for RMV gave a more variable response. Frequency distribution of individual genotype scores suggested that much of the resistance to crown rust was under the control of 1 or 2 genes with major effects, while resistance to RMV appeared to be controlled by a large number of genes each having a small effect. In the field, resistance to RMV measured after 20 months was strongly correlated with that obtained in the glasshouse. Natural infection by crown rust in the field was too low to reveal any differences between populations, although 3 populations from the Po Valley regions of northern Italy became heavily infected with P. recondita. Selection for disease resistance significantly reduced the persistence of 3 populations, but that of 4 others was unaffected and 1 showed a significant improvement. Selection reduced water-soluble carbohydrate (WSC) levels in spring slightly but significantly from 27.6 to 25.8% WSC overall. Agronomic performance must be monitored during selection for disease resistance.
Language:English
Note:Sec Jnl Source: Biological Abstracts 68, 17991.
Geographic Terms:UK
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Hides, D. H., and P. W. Wilkins. 1978. Selection for resistance to ryegrass mosaic virus and crown rust (Puccinia coronata Corda) in Italian ryegrass populations. J. Br. Grassland Soc. 33(4):p. 253-260.
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Web URL(s):
http://onlinelibrary.wiley.com/doi/10.1111/j.1365-2494.1978.tb00828.x/epdf
    Last checked: 10/02/2015
    Requires: PDF Reader
    Access conditions: Item is within a limited-access website
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MSU catalog number: SB 197 .B7
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