Per offrirti il miglior servizio possibile RareAquaticPlants utilizza cookies. Continuando la navigazione nel sito autorizzi l’uso dei cookies |Maggiori Informazioni


RAP Forum

RAP Shop
Info
Contacts
Forum
Collaboratori di RAP
English Articles
Siti Amici
Wabikusa
Schede Piante
Articoli Tecnici
Tecniche Riproduzione
Foto Piante
Alghe
RAP Algae
Coltivazione Emersa
Allestimenti
Layout & Manutenzione
Illuminazione
Allevamento Caridine
YouTube Channel
Le News

Share on Facebook

ALL RIGHTS RESERVED - COPYRIGHT 2010

MASSIMO IANNELLA

Translation by Tanya

Eriocaulon_from_Goias_fioritura_vasca

Author’s Introduction

The results of this publication have a significant scientific importance because they bring light on some aspects that have been absolutely not known by now, I would like to specificate that my pictures as well as my observations are unique and have never appeared on the corresponding web sites before; and consequently it results to be the first publicized study of the specie Eriocaulon sp. 'Goias' that is my hobby and scientific work at the same time. It needs to be said that similar observations of the specie in question have not yet been made by the international scientific community either in natural environment or in captivity.

After almost two years of cultivation that began from the first specimen of Eriocaulon sp. 'Goias' today I finally publish a study on reproduction of this rare specie that demonstrates some surprising characteristics. We should notice that all the plants present in different aquariums started flowering all together despite of their different age; it means that the main factor that influences this phenological phase is the temperature exclusively. Temperature descending just for a few degrees, passing from 25-27° C (77-80.6° F) to 21-23° C (69.8-73.4° F) for about 30-45 days has given birth to lots of inflorescences of different kinds. It’s interesting to notice that many stems are inflorescences properly (picture 11), i.e. the reproductive organs made of many flowers (inflorescences) and in this case both masculine and female organs are present because of the monoecious character of  E. sp. 'Goias' specie, other stems are inflorescences that rise above the water level having both floral apparatus and semi-sprouts with very small leaves (pictures 9, 12, 13, 14). I observed the formation of stems immersed with a protective cover on (pictures 16,17,18,19); so that the last one’s gradual day-by-day breaking gives a way out to a sprout (pictures 20, 21) that attaches to it and develops until it takes roots (pictures 22, 23) remaining on the surface of the water. Sometimes this plant gives origin to another inflorescence sprouting up in a form of a long stem that has an inflorescence at the end: it is important to separate and plant it on the bottom because otherwise it would die in a couple of weeks if left in these conditions i.e. having just an “umbilical cord” represented with a long stem that connects it with its mother plant (pictures 7, 8). The described above stele typology is an “asexual reproduction” kind solely, because there are no flowers present, and sometimes they develop afterwards on the plant already born and floating on the water surface. Often on these stems, that have a kind of a spring on their base (picture 15) which permits spreading for a longer distance, I also observed a multiple plants formation (picture 3) dividing the plants with a scalpel and planting the parts on the substratum to produce new individuals (pictures 1,2).

Eriocaulon sp. 'Goias' is very particular specie that demonstrates different reproduction typologies, but unfortunately the way of adequate stimulation as well as the reason why they differ is not known yet. I am running various experiments on, and I will publish the results as soon as I have a certainty about the reasons of some behavior.

ALL RIGHTS RESERVED - COPYRIGHT 2010

MASSIMO IANNELLA