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Aldaxka

Magnolia baten aldaxka sustraitua, adar batetik.
Kalanchoe pinnata baten berezko aldaxketa, hosto batetik.

Aldaxka landare bati moztu eta kentzen zaion zatia da, bertatik landare berri bat lortzeko. Horretarako lurrean sartu edo uretan ipini behar da, bertan sustraiak bota eta itsasteko. Ohikoena adar zati bat bada ere, zenbaitetan hosto bat izan daiteke. Horrela, lehenik landarearen organoa banandu egiten da eta gero sustraitu, belauntzean ez bezala, lehenik sustraitu eta gero banandu egiten baita.

Ugalketa asexual teknika hau, aldaxkatzea deritzona, klonazio mota bat da: aldaxka eta landare ama genetikoki berdin-berdinak dira. Aldaxkatzea zelula desbereizte bidez egiten da, meristemoaren mailan.

Espezie batzuk errazago aldaxkatzen dira besteak baino. Urterokoak aldaxkaerrazak dira eta zuhaitz batzuk ere bai, hala nola:

Ikus, gainera

[aldatu | aldatu iturburu kodea]

Kanpo estekak

[aldatu | aldatu iturburu kodea]
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Aldaxka
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