Pinus seeds cannot germinate and establish without fungal association. This is because:
its seeds contain inhibitors that prevent germination.
its embryo is immature.
it has an obligate association with mycorrhizae.
it has a very hard seed coat.
roots in some genera like Pinus have a fungal association in the form of mycorrhiza . Mycorrhizae are symbiotic associations where fungi help the plant in the absorption of essential nutrients from the soil . For Pinus, this association is obligate, meaning the seeds cannot germinate and establish without the presence of the mycorrhizal fungus.
Join thousands of students and practice with AI-generated mock tests.