A Mustard Oil of Hesperis matronalis Seed, 6-Methylsulphinylhexyl Isothiocyanate.

Flower color-flower scent associations in polymorphic Hesperis matronalis (Brassicaceae).

Floral scent emission rate and composition of purple and white flower color morphs of Hesperis matronalis (Brassicaceae) were determined for two populations and, for each, at two times of day using dynamic headspace collection and GC-MS. The floral volatile compounds identified for this species fell into two main categories, terpenoids and aromatics. Principal component analysis of 30 compounds...

The impact of biochemistry vs. population membership on floral scent profiles in colour polymorphic Hesperis matronalis.

BACKGROUND AND AIMS Studies of floral scent evolution often attribute variation in floral scent to differences in pollinator behaviour, ignoring the potential for shared biochemistry between floral scent and floral colour to dictate patterns of phenotypic variation in scent production. To determine the relative effects of shared biochemistry and/or localized population-level phenomena on floral...

Effects of Local Conspecific Density on Reproductive Success in Penstemon Digitalis and Hesperis Matronalis

We investigated the effects of plant density on reproductive success for two insect-pollinated plant species—the native North American wildflower Penstemon digitalis (Foxglove-leaved Penstemon), and the showy introduced weed Hesperis matronalis (Dame's Rocket). We found no indication that local density (within 3.0 m) affected reproductive success (seeds per fruit, proportion fruit set, total se...

Sensitization and desensitization to allyl isothiocyanate (mustard oil) in the nasal cavity.

The aim of this study was to investigate the response, acute effects and time-course of sensitization and desensitization to allyl isothiocyanate (mustard oil) nasal stimuli in healthy subjects. Sixty subjects participated in the experiment, which employed psychophysical (intensity ratings) and psychophysiological (skin conductance response) measurements. Nasal stimuli were delivered three time...

Detection of argemone oil in mustard oil.