Biology Reference
In-Depth Information
Table 1.
GLM of the effects of sex and population of Silene latifolia plants on log transformed total amount of
odor per flower.
Figure 1.
Absolute amounts of odor emitted by female (grey bars) and male (black bars) flowers of two S.
latifolia populations. In both populations, male flowers emit significantly more odor than female flowers (GLM,
P < 0.001).
In the analysis of individual compounds, more active compounds (com-
pounds triggering electrophysiological responses or affecting behavioral responses
in pollinators) [17] were significantly different between the sexes than non-active
compounds (Switzerland: active 93%, non-active: 50%; Spain active: 86%, non-
active 62%). The emission of most compounds behaviorally active in Hadena
bicruris [17] were found to be significantly higher in male flowers than in female
flowers in both populations (Figure 2a, b, Table 2). In Switzerland, 2-methoxy
phenol, the lilac aldehydes A, B and C, and veratrole were found in significantly
higher amounts in male flowers. The amounts of phenylacetaldehyde and linalool
were not significantly different between the sexes. In Spain, phenylacetaldehyde,
lilac aldehyde A, and veratrole were found in significantly higher amounts in male
flowers. 2-methoxy phenol, and the lilac aldehydes B and C were not significantly
different in males and females, but showed a trend to higher emission in males.
Only linalool was found in significantly higher amounts in females.
