Growth, herbivory and disease in relation to gender in Salix viminalis L.

@article{hman1997GrowthHA,
  title={Growth, herbivory and disease in relation to gender in Salix viminalis L.},
  author={Inger {\AA}hman},
  journal={Oecologia},
  year={1997},
  volume={111},
  pages={61-68}
}
  • I. Åhman
  • Published 1 June 1997
  • Biology, Medicine
  • Oecologia
Abstract Many species of dioecious plants show sex-related differences in growth rate and rates of attack by various herbivores and diseases. The common pattern is for males to grow faster than females and to be less well defended against herbivores. In willows (Salix spp.), the predominance of female-biased sex ratios has been ascribed in part to differential feeding by herbivores. In this study of Salix viminalis, seven families grown on agricultural land showed no gender-related variation in… Expand
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References

SHOWING 1-10 OF 56 REFERENCES
Sex and Drugs and Herbivores: Sex‐Biased Herbivory in Arroyo Willow (Salix Lasiolepis)
TLDR
Of the dimorphic traits, only variation in leaf phenology is a consistent predictor of variation in sawfly densities among willow clones. Expand
Sex-Biased Herbivory in Arroyo Willow: Are There General Patterns among Herbivores?
TLDR
The relationship between willow sex and densities of a different group of herbivores that includes two leaf-mining lepidopterans, a gall-forming mite, and a Gall-forming fly is examined, suggesting that the development of a general theory of sex-biased herbivory may require numerous and varied case studies. Expand
Female predominant sex ratios and physiological differentiation in arctic willows.
TLDR
The similarity of the degree of female predominance in S. polaris in Spitsbergen and S. herbacea in Iceland suggests that there is an optimal proportion and a common mechanism for the excess of female over male plants. Expand
VARIATION IN THE INFECTION OF SILENE DIOICA (L.) CLAIRV. BY USTILAGO VIOLACEA (PERS.) FUCKEL IN NORTH WEST ENGLAND
TLDR
The infection of populations of Silene dioica by Ustilago violacea was studied in four areas of north-west England and it was found that female plants had a higher percentage of infection than males and, in some populations, over a third of the reproductive capacity was lost. Expand
Sex determination and sex ratio in the dioecious shrub Salix viminalis L.
TLDR
In an experiment carried out in a homogeneous environment and in the absence of herbivores the progeny sex ratio was observed to range from extreme female bias to extreme male bias and can be explained by a sex determination mechanism governed by multiple independent loci. Expand
Sexual Differences in Biomass and Nutrient Allocation in the Dioecious Rubus Chamaemorus
TLDR
I compared the seasonal pattern of biomass distribution and amounts of N and P in male and female ramets of the dioecious perennial herb Rubus chamaemorus with results suggesting that male reproductive effort is greater than female up to the time of flowering, but that the total female allocation to reproduction is greater the total male even at relatively low levels of fruit set. Expand
Leaf Demography and Clonal Growth in Female and Male Rumex Acetosella.
TLDR
The present study explored the hypothesis, suggested by David Lloyd, that differences in the vegetative vigor and seasonal phonology of males and females might explain the female-biased sex ratios generally found in populations of Rumex acetosella. Expand
Female-biased Sex Ratios and Differential Growth in Arctic Willows
Summary (1) Sex-ratios of flowering plants of Salix arctica in NWT Canada, north-east and north-west Greenland and of S. glauca in W. Greenland are significantly biased in favour of females (2)Expand
SEX‐SPECIFIC COSTS OF RESISTANCE TO THE FUNGAL PATHOGEN USTILAGO VIOLACEA (MICROBOTRYUM VIOLACEUM) IN SILENE ALBA
TLDR
Investigation of half‐sib families of Silene alba grown in experimental populations in the presence and absence of the anther‐smut fungus Ustilago violacea found that the effective pathogen pressure and hence the relative success of susceptible and resistant individuals may, in addition to fitness costs of resistance, depend on the spatial population structure of the pathogen. Expand
Oviposition choice and larval survival of Dasineura marginemtorquens (Diptera: Cecidomyiidae) on resistant and susceptible Salix viminalis
TLDR
This study reports the results of laboratory experiments on female oviposition choice and larval survival on potted plants from clones that are very different in resistance as determined in field studies. Expand
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