babak m escribi=F3:
>> -----Original Message-----
>=20
>=20
> I am Babak Moradi educated student of Plant Physiology from University
> of Tehran. I live in western part of Iran, Ilam province. Here is one
> of
> mountainous part of the country. Zagros Mountains are extended here.
> There are so many plant species, which live here. It is oak (Quercus
> spp.) dominant plant species on the mountains.
> There is something interesting which happen on these wild trees. The
> oak
> s fruits secrete some sweet compounds namely Shooka on their sides that=
> visually are white and sugarlike. People who live here extract these
> compounds and use them as a sweet thing using in their regimes. This
> phenomenon has eight to ten years cycle. Unfortunately, I do not have
> enough equipment to determine their entity, but I guess it could be
> sucrose.
> I have some question based on this information.
> Why these plants do this?
> With regard to its long period what can be the advantage of this
> phenomenon for the plant?
> What factors can be the effectors of this phenominon?
>=20
If you have register of the cycles you can compare with climate data.
Rains, temp, and other factors.
Ten years cicle sound like solar storms cycle!!! If not correlation=20
with wheater, may be you can try to reproduce the phenomen with UV and=20
other radiation exposure.
Marco Antonio Achury
Caracas, Venezuela
|
