Lohkohedelmä

Lohkohedelmä on yksi kasvien hedelmätyypeistä. Se on kuiva ja aukeamaton hedelmä, joka kypsyttyään lohkeaa pienemmiksi osiksi, hedelmyksiksi. Lohkohedelmätyypin hedelmiä on esimerkiksi sarjakukkais-, malva- ja kurjenpolvikasveilla.[1] Lohkohedelmät muotoutuvat vähinttään kaksi lohkoisista sikiäimistä ja näissä sikiäimissä on kaikissa yksi siemen.[2]

Erityyppisiä lohkohedelmiä

Metsävaahteran (Acer platanoides) lohkohedelmä.
  • Sarjakukkaiskasveilla (Apiaceae) on kaksilohkoinen, usein litteä lohkohedelmä.
  • Kurjenpolvikasveilla (Geraniaceae), kuten kurjenpolvilla (Geranium) ja kurjennokilla (Erodium), on viisiosainen lohkohedelmä. Hedelmän kärkiosa halkeaa kypsänä hedelmykset sinkoaviksi liuskoiksi.
  • Vaahteroilla (Acer) on kaksilohkoinen lohkohedelmä, lohkot ovat siivelliset.
  • Malvoilla (Malva) on pyöreä lohkohedelmä, jossa hedelmykset ovat säteittäin. [1]

Lähteet

  1. ↑ a b Hämet-Ahti, L., Suominen, J., Ulvinen, T. & Uotila, P. (toim.): Retkeilykasvio. Helsinki: Luonnontieteellinen keskusmuseo, Kasvimuseo, 1998. ISBN 951-45-8167-9
  2. ↑ Antero Pankakoski: Puutarhurin kasvioppi, s. 181. Edita, Opetushallitus, 1996. ISBN 951-37-1932-4

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