zozo
Member
Hi all, Gas transfer does occur <"between different parts of the plant">, but what I think is more likely to happen is that the plant will begin to shed its submerged leaves, once it has become emersed with access to atmospheric CO2.
cheers Darrel
That might depend on the spieces..
Echinodorus is doing excactly what you say, it actualy completely stops making submersed leaves once some leaves are emersed. It sheds all submersed leaves and it only will make red colered leafstalks with a very smal red leaf on it. When this leaf emerses it grows bigger and all turns green. I have it over 2 years emersed now and it also never made runners submersed. Actualy no idea if Echinodorus does this in submersed form. But emersed form only makes new plantlets on the flower stalks.
But last summer i planted a large emersed form Dark red colored Lobelia Cardinalis in a 25cm deep water, after the summer it had grew a lot submersed form red/green new plantlets at the plantbase. Did cut the mother out and still have the rest submersed in the tank overwintering indoors under artificial light. All turned completely green and made quite a large carpet of Lobelias. So Lobelia definitively does vegetative propagation submersed from an emersed form mother.