Bore (botanical)

See also: Gimlet

At the vegetable higher, a gimlet is a specialized Organe allowing the plants crawling or climbing to cling to various supports. The gimlets, generally of circular section, are able to be rolled up in tight Spirale. This rolling up in contact with the support is due to a Tropisme of contact (haptotropism) and intervenes only in certain precise zones of the gimlet. Rolling up can be done clockwise or in the contrary direction. At the dioïque Bryone, the gimlets form two rollings up of contrary direction.

They result from the transformation of various bodies and can have the internal structure of a root, a Tige or a Feuille. In this last case, they can either replace the limb, case of the Gesse aphaca species at which the chlorophyllian role of the limb is reserved for stipulate very developed, or to be Foliole S modified, cases of many Fabacée S like the Garden pea or the Vesce cracks ( Vicia cracca ), or of the Stipule S, case of the Salsepareille.

Certain climbing plants use other means of fixing to their supports:

of the cramps (adventitious roots), case of the ivy;
of the suction cups, case in certain point of Virginia creeper;
of the voluble stems, case of the Bean or the Bindweed;
of the Petiole S making function of gimlet, case of the Clématite S.

Random links: