Intraspecific variation for frost hardiness in white clover

@article{Caradus1989IntraspecificVF,
  title={Intraspecific variation for frost hardiness in white clover},
  author={J. Caradus and A. C. Mackay and J. V. D. Bosch and D. Greer and G. Wewala},
  journal={The Journal of Agricultural Science},
  year={1989},
  volume={112},
  pages={151-157}
}
Genetic variation in a Norwegian germplasm collection of white clover (Trifolium repens L.)
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The results demonstrate that there is enough genetic variation in adapted local populations to develop new improved cultivars adapted to high-latitude environments that combine upright growth habit with sufficient winter-hardiness and persistency. Expand
Multivariate phenotypic divergence along an urbanization gradient
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The results suggest that adaptation to urban environments involves multiple organismal traits, and that urban populations had later phenology and germination, larger flowers, thinner stolons, reduced cyanogenesis, greater biomass, and were more attractive to pollinators. Expand
Freeze-induced cyanide toxicity does not maintain the cyanogenesis polymorphism in white clover (Trifolium repens).
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The results suggest that freezing-induced HCN toxicity is unlikely to be responsible for the maintenance of the cyanogenesis polymorphism in white clover, however, energetic trade-offs associated with costs of producing the cyanogenic precursors may confer a fitness benefit to acyanogenic plants under stressful climatic conditions. Expand
Urbanization drives parallel adaptive clines in plant populations
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This study sampled the frequency of a Mendelian-inherited trait—cyanogenesis—in white clover plants along urbanization gradients in four large cities to demonstrate that wild populations exhibit parallel adaptive evolution in response to urbanization. Expand
Four hundred years of cultivation of Dutch white clover landraces
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The history and some of the characters of Dutch White has been described, and its former dominating role remains in its botanical name hollandicum and in its vernacular names: ‘Dutch clover’. Expand
Variation in cold tolerance and spring growth among Italian white clover populations
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The study identified two populations which combined, to differing extents, cold tolerance and spring yield characteristics that would be of potential use in breeding for specified agronomic/climatic zones. Expand
Variation amongst survivor populations of white clover collected from sites across Europe: growth attributes and physiological responses to low temperature.
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The result suggests that a higher degree of phenotypic plasticity for this trait had been selected for in the German and Swedish populations, suggesting that it is of adaptive significance in cool climates. Expand
Growth potential of buds of two contrasting cultivars of white clover during winter and early spring
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AberHerald had a higher percentage of potentially active buds than Huia during winter, irrespective of the node position, and AberHerald buds had faster rates of outgrowth thanHuia buds. Expand
Vegetative Growth and Freezing Tolerance of White Clover ( Trifolium repens L.) Genotypes from Svalbard
TLDR
The genotypes from Svalbard gave higher dry-matter yields than the genotypes of Norstar, and one of them also exceeded the AberHerald genotype in dry- Matter production at the temperatures studied, constant 12°;C and alternating 15 9°; c and 12 6°; C (12 12 h). Expand
Responses of Nine Trifolium repens L. Populations to Ultraviolet-B Radiation: Differential Flavonol Glycoside Accumulation and Biomass Production
TLDR
Within-species comparisons in T. repens lend support to a distinct role for ortho -dihydroxylated flavonoids in the adaptation to UV-B stress and suggest particular advantages in thisUV-B-induced biochemical adaptation for populations characterized by low habitat and plant productivity. Expand
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Abstract The checklist presents a summary of information about the origin, breeding, and characteristics of 232 white clover (Trifolium repens L.) varieties. Agronomic potential, diseaseExpand
EXPERIMENTAL STUDIES ON SLUG-PLANT INTERACTIONS IV. THE PERFORMANCE OF CYANOGENIC AND ACYANOGENIC MORPHS OF TRIFOLIUM REPENS IN THE FIELD
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The host of interacting factors observed suggest that mollusc grazing is only one of the several forces affecting the cyanogenesis polymorphism in white clover, which seems to be more complex than can be accounted for simply by molluscs grazing or by any other single factor (for example, winter temperature). Expand
Effect of Photoperiod, Night Temperature, and Frost Incidence on Development of Frost Hardiness in Pinus radiata
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Pinus radiata has a greater potential to develop frost hardiness than was previously thought from field observations and was attributed to differences in their environments, particularly the incidence of frosts. Expand
Winter survival and spring growth of white clover cultivars at an upland site in northern England
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A study of the survival and early spring growth of 13 commercial varieties of white clover and found small-leaved cultivars, e.g. S.184, have been favoured for upland use because they are well able to survive. Expand
Effect of frosting, moisture stress and potassium cyanide on the metabolism of cyanogenic and acyanogenic phenotypes of Lotus corniculatus L. and Trifolium repens L.
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Frosting and severely droughting entire plants generally reduced photosynthesis but had no effect on respiration in both species, irrespective of the presence of cyanide. Expand
Simulated frosting of tropical grasses
TLDR
Ranking order for leaf damage was determined in six varieties of the tropical grass setaria after frosting in a controlled environment and was found to be similar to known field response, while significant variation in frost tolerance in Setaria was related to altitude of origin, whereas in Paspalurn plicatulum latitude of origin appeared to be the controlling factor. Expand
EVALUATION OF COLD-HARDINESS BY CONTROLLED FREEZING OF FIELD-HARDENED FORAGE CROPS
TLDR
Highly significant correlations were obtained between survival after controlled freezing and survival after natural winter exposure in studies with 10 orchardgrass varieties, 15 alfalfa varieties, 16 grass species, and 43 lines of white clover. Expand
Genetic relationship between cold hardiness and growth at low temperature in Medicago sativa
TLDR
Genetic relationship between cold hardiness and growth at low temperature in Medicago sativa is studied and it is found that the former is related to warmer temperatures and the latter to colder temperatures. Expand
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