On the polymorphism of cyanogenesis in Lotus corniculatus L. III. Some aspects of selection

Jones, David A.

doi:10.1038/hdy.1970.68

Cited by 19 publications

(14 citation statements)

References 10 publications

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“…On the other hand, there is some evidence, in cultivated material, of genetic differences between plants for the fitness character of seed production (Albrechtsen, 1965). As with the data presented previously (Jones, 1970), the within-clone mean squares are consistent over the three analyses. Thus the plants which did not produce seeds were a random sample of the total number examined.…”

Section: Rsuurs and Discussionsupporting

confidence: 85%

“…These plants have been classified into the three phenotypes of deep, pale and light keel colour for the analysis of variance for winter survival on the one hand and overall survival on the phenotypes fixed and habitats regarded as random for this analysis, it can be concluded that there are no effects either of the phenotype or of the origin of the plants on survival. It will be noticed that the mean square for habitats in this table is not the same as that published previously (Jones, 1970). Because the data comprise disproportionate numbers, a weighted interaction item is calculated and the main effects sum of squares corrected accordingly (Snedecor and Cochran, 1967).…”

Section: Rsuurs and Discussionmentioning

confidence: 98%

“…There is strong evidence that the frequency distribution of the dark keeled form in England and Wales is clinal, there being a significant regression (b = 0.039) of frequency on latitude ( Experiments on winter survival and seed production by plants of the four basic phenotypes associated with cyanogenesis have been described previously (Jones, 1970). The plants used for those experiments were chosen at random from 995 plants grown from seed collected in Britain and in Scandinavia.…”

Section: Rsuurs and Discussionmentioning

confidence: 99%

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Variation in the colour of the keel petals in Lotus corniculatus L.

Jones

Crawford

1977

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SUMMARYThe distribution of the dark keeled form of Lotus corniculatus in Western Europe is described. Although there is an association between the frequency of the dark keeled form and latitude in England and Wales, no differences between the dark keeled and light keeled forms in the winter survival or in seed production were found under experimental conditions. Furthermore, there appears to be no association between cyanogenesis in the leaves and keel colour, either on a per plant or on a population basis.

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Section: Rsuurs and Discussionsupporting

confidence: 85%

Section: Rsuurs and Discussionmentioning

confidence: 98%

Section: Rsuurs and Discussionmentioning

confidence: 99%

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Variation in the colour of the keel petals in Lotus corniculatus L.

Jones

Crawford

1977

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“…This plant is a tetraploid, outbreeding perennial species and its shows very great morphological and physiological variation (Jones, 1962(Jones, , 1970de Vries, 1968;Seaney and Henson, 1970;Borsos, 1976). Some of it has been shown to have a genetic basis (e.g.…”

Section: Introductionmentioning

confidence: 99%

On the polymorphism of cyanogenesis in Lotus corniculatus L.

1977

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SUMMARYThe environmental factors influencing a steep morph-ratio dine in a maritime population of Lotus corniculatus have been studied in detail. The frequency distribution of cyanogenic plants in the dine has remained stable for 16 years, plants very near the sea being predominantly acyanogenic, whereas 200 m inland 70 per cent of the plants are cyanogenic. Analyses of the biotic, edaphic and microclimatic environment of this population showed that an exposure gradient (wind and windborne salt) and the distribution of known selective herbivores were the only factors which were consistently associated with the dine.On the basis of these results and the hypothesis that cyanogenesis is a protection against herbivores it was predicted that other sites along the coast, which showed similar environmental variation, should also show a similar distribution of selective herbivores and of cyanogenic plants. It was confirmed that at sites exposed to wind and windborne salt the selective herbivores were rare and the frequency of cyanogenic plants was low. At sites which were less exposed, the numbers of selective herbivores and the frequency of cyanogenic plants were both higher.

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“…However, Crawford-Sidebotham (1972), using many more species of molluscs, found that cyanogenic plants of both L. corniculatus and T. reftens are eaten less than acyanogenic plants. It has been suggested by Jones (1970) that in T. repens, selection is cyclical, involving frost resistance in winter and physiological fitness and herbivore feeding in summer.…”

Section: Introductionmentioning

confidence: 99%

Herbivore feeding and cyanogenesis in Trifolium repens L.

Whitman

1973

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On the polymorphism of cyanogenesis in Lotus corniculatus L. III. Some aspects of selection

Cited by 19 publications

References 10 publications

Variation in the colour of the keel petals in Lotus corniculatus L.

Variation in the colour of the keel petals in Lotus corniculatus L.

On the polymorphism of cyanogenesis in Lotus corniculatus L.

Herbivore feeding and cyanogenesis in Trifolium repens L.

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