Příklady asparagus

• Four-day-old males were not attracted by lures or visual cues alone, while they are attracted by lures presented with asparagus odours.

• The location and timing of endo- -mannanase production and the increase in activity of -mannoside mannohydrolase in seeds of germinated asparagus were followed.

• There is no distinctive aleurone layer in asparagus seeds.

• The volatiles found in green asparagus were radically different from those found in previous studies.

• Visual stimuli alone had no attractive effect even for 4-day-old males that are usually attracted by asparagus.

• Tests using males showed that the presence of a congener was not a necessary factor for attraction to asparagus (fig. 4).

• Green asparagus (10 g) was rapidly crushed in a flask fitted to another flask immersed in liquid nitrogen and connected to a vacuum pump.

• When used with plant odour, eight pieces of asparagus (thickness 0.5 cm) were placed in a cup (diameter 2 cm) at the base of each lure.

• Males responded to asparagus on the first day after emergence and females responded to the host-plant/male pheromone blend as early as the second day after emergence.

• Field studies of host finding by the asparagus fly would be necessary to improve control strategies and particularly biological control against this pest.

• Hence, in this paper we report on the location and timing of endo- -mannanase production in seeds of germinated asparagus.

• The observation that endo- -mannanase is not active in asparagus seeds prior to the completion of germination is in keeping with the hypothesis that the micropylar endosperm structurally facilitates germination.

• When used as a stimulus, male flies were confined within a plastic net cage 2 cm in diameter that was attached to the middle asparagus spear on the upwind side.

• Cell walls in developing and germinated asparagus seed mannanase activity in the skin and outer pericarp of tomato fruits during ripening.

• Despite their lower responsiveness to the host plant alone, females showed the strongest anemotactic response when presented with a stimulus combining asparagus volatiles and male pheromones.