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Hofgaard, Ingerd Skow; Vollsnes, Ane V.; Marum, P.; Larsen, Arild; Tronsmo, Anne Marte

doi:10.1023/a:1026130825722

Cited by 19 publications

(3 citation statements)

References 36 publications

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“…The degree of winter injuries was recorded in May 2012 and 2013, following the start of spring growth. The visual appearance of the tillers of each plant was scored using the following scale: 0 = no green tillers, 1 = some green tillers, 2 = less than 50% green tillers, 3 = more than 50% green tillers, and 4 = all tillers green (Hofgaard et al 2003). The plants were cut three times during the 2012 growing season, and dry matter yield (DMY) was determined.…”

Section: Visual Assessment Of Injuriesmentioning

confidence: 99%

“…According to Gaudet (1994) there is no direct correlation between snow mould resistance and frost tolerance, but cultivars with high frost tolerance often show higher resistance to snow mould. Similarly, no strong correlation was found between snow mould resistance and frost tolerance in perennial ryegrass (Hofgaard et al 2003). Snow mould resistance in grasses increases after cold acclimation during autumn, while the resistance decreases during late spring (April) (Årsvoll 1977;Tronsmo 1984a;Prończuk and Zagdańska 1993).…”

Section: Introductionmentioning

confidence: 99%

“…Most of the studies of snow mould resistance have been conducted using cold acclimation as a pre-treatment; therefore association between frost tolerance and snow mould resistance was found in cold hardened plants (Tronsmo 1984b). However, no such correlation was found in unhardened plants (Tronsmo 1984b;Hofgaard et al 2003), hence little is known about the variation in resistance in unhardened plants. Testing of snow mould resistance in the field is complicated due to the difficulty of separating injuries due to snow mould from other winter damages caused by, e.g., ice encasement, carbohydrate depletion and low photosynthetic efficiency (Ergon et al 1998).…”

Section: Introductionmentioning

confidence: 99%

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Snow mould resistance under controlled conditions and winter survival in the field in populations of perennial ryegrass, meadow fescue, andFestuloliumare partly dependent on ploidy level and degree of northern adaptation

et al. 2016

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Pink snow mould caused by Microdochium nivale is a serious cereal and grass disease in several temperate regions. In this study, resistance to snow mould was evaluated under controlled conditions in nine promising breeding populations and two cultivars of Festulolium, three cultivars of Festuca pratensis, six cultivars and two breeding populations of Lolium perenne and one cultivar of hybrid ryegrass using non-hardened plants. In addition, winter survival was evaluated in field plots inoculated with M. nivale. Under controlled conditions, tetraploid entries of Festulolium had a significantly better resistance to snow mould than diploid entries in three out of four tests. Diploid and tetraploid entries of L. perenne showed similar levels of resistance under controlled conditions. In the field trial, entries of both L. perenne and Festulolium that had been exposed to natural selection in northern Norway (above 65°N) showed good levels of winter survival. In general, under controlled conditions snow mould resistance of Festulolium entries was associated with ploidy level, whereas under field conditions winter survival of L. perenne entries was associated with their degree of northern adaptation. However, resistance to snow mould in non-hardened plants tested under controlled conditions was not correlated with winter survival in the field.

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Section: Visual Assessment Of Injuriesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Snow mould resistance under controlled conditions and winter survival in the field in populations of perennial ryegrass, meadow fescue, andFestuloliumare partly dependent on ploidy level and degree of northern adaptation

et al. 2016

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Snow mold of winter cereals: a complex disease and a challenge for resistance breeding

et al. 2020

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Key message Snow mold resistance is a complex quantitative trait highly affected by environmental conditions during winter that must be addressed by resistance breeding. Abstract Snow mold resistance in winter cereals is an important trait for many countries in the Northern Hemisphere. The disease is caused by at least four complexes of soilborne fungi and oomycetes of which Microdochium nivale and M. majus are among the most common pathogens. They have a broad host range covering all winter and spring cereals and can basically affect all plant growth stages and organs. Their attack leads to a low germination rate, and/or pre- and post-emergence death of seedlings after winter and, depending on largely unknown environmental conditions, also to foot rot, leaf blight, and head blight. Resistance in winter wheat and triticale is governed by a multitude of quantitative trait loci (QTL) with mainly additive effects highly affected by genotype × environment interaction. Snow mold resistance interacts with winter hardiness in a complex way leading to a co-localization of resistance QTLs with QTLs/genes for freezing tolerance. In practical breeding, a multistep procedure is necessary with (1) freezing tolerance tests, (2) climate chamber tests for snow mold resistance, and (3) field tests in locations with and without regularly occurring snow cover. In the future, resistance sources should be genetically characterized also in rye by QTL mapping or genome-wide association studies. The development of genomic selection procedures should be prioritized in breeding research.

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Ecotypic variation of water-soluble carbohydrate concentration and winter hardiness in cocksfoot (Dactylis glomerata L.)

2006

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SummaryThe variation of the water-soluble carbohydrate (WSC) concentration in foliage and stubble and winter hardiness among cocksfoot (Dactylis glomerata L.) ecotypes originated from diverse countries were studied in the field in order to find a breeding material for the improvement of WSC. The total WSC concentration of foliage was found to be highest in Japanese cultivars and lowest in ecotypes from northern Europe in summer and autumn. The variation of fructan concentration in stubble among ecotypes was larger than the variation of mono and disaccharide concentrations in stubble and that of total WSC concentration in foliage in both winters over which this study was conducted. The total WSC and fructan concentrations in the stubble of ecotypes from Spain and southern Europe, derived from the Mediterranean region, were highest in summer. Ecotypes from Japan showed the highest concentration of total WSC in stubble, and were especially high in fructan concentration in autumn. Ecotypes from breeding material which has a high WSC concentration in the foliage could not be found among the ecotypes in this study. However, some ecotypes that showed disease resistance, good winter hardiness and plant vigor would be useful as breeding materials for Hokkaido.Abbreviations: IDSM, index of damage by snow mold

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Cited by 19 publications

References 36 publications

Snow mould resistance under controlled conditions and winter survival in the field in populations of perennial ryegrass, meadow fescue, andFestuloliumare partly dependent on ploidy level and degree of northern adaptation

Snow mould resistance under controlled conditions and winter survival in the field in populations of perennial ryegrass, meadow fescue, andFestuloliumare partly dependent on ploidy level and degree of northern adaptation

Snow mold of winter cereals: a complex disease and a challenge for resistance breeding

Ecotypic variation of water-soluble carbohydrate concentration and winter hardiness in cocksfoot (Dactylis glomerata L.)

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