This photo is at the end of pollen season. The male strobili have ended the pollen production and have become brown. The female strobili have closed the openings in it so that pollen can't flow in the strobili.
Under the pollen season the airborne pollen were catched by help of the RodoRod sampler. The tapes was struck with fat and pollen sank in the fat.
We counted the amount of pollen by help of the microscope and could determine the day when there was most pollen in the air.
This photo is it the end of June after flowering. The female srobili was fertilized and was grown up and became green.
Muokattu: 15.3.2003 15:50