Scheda di dettaglio – i prodotti della ricerca
| Dato | Valore |
|---|---|
| Title | Propagules of Alsidium corallinum (Rhodomelaceae, Rhodophyta) |
| Abstract | Alsidium corallinum C. Agardh from the Mar Grande of Taranto (Ionian Sea, Mediterranean Sea) reproduced primarily by propagules. These were starch- filled branchlets subtended by little-pigmented axes, which reached the maximum length of 6 mm with a diameter of about 300 Ým. Propagules could both be branched up to three orders and form other propagules in their turn. On mature plants propagules originated by the transformation of the ultimate order branch whereas on overwintering plants they derived from the transformation of lower order branches. On some individuals, some tetrasporangial branchlets grew as propagules after having formed a variable number of tetrasporangia. Some propagules also formed tetrasporangia. Generally, propagules detached above the little-pigmented axis which successively regenerated a new propagule. In the field, propagules settled on various substrata and propagule-derived plantlets were often observed. As the other species of Alsidium do not form propagules, propagule production by A. corallinum may be considered as a specific character. |
| Source | Botanica marina (Print) 45, pp. 580–585 |
| Keywords | A. corallinumpropagulesreproductionMediterranean |
| Journal | Botanica marina (Print) |
| Editor | de Gruyter., New York, Germania |
| Year | 2002 |
| Type | Articolo in rivista |
| Authors | Cecere E. 1, Saracino O.D. 2, Petrocelli A. 3 |
| Text | 6284 2002 A. corallinum propagules reproduction Mediterranean Propagules of Alsidium corallinum Rhodomelaceae, Rhodophyta Cecere E. 1, Saracino O.D. 2, Petrocelli A. 3 1 IAMC CNR; 2 IAMC CNR; 3 IAMC CNR. Alsidium corallinum C. Agardh from the Mar Grande of Taranto Ionian Sea, Mediterranean Sea reproduced primarily by propagules. These were starch filled branchlets subtended by little pigmented axes, which reached the maximum length of 6 mm with a diameter of about 300 Ým. Propagules could both be branched up to three orders and form other propagules in their turn. On mature plants propagules originated by the transformation of the ultimate order branch whereas on overwintering plants they derived from the transformation of lower order branches. On some individuals, some tetrasporangial branchlets grew as propagules after having formed a variable number of tetrasporangia. Some propagules also formed tetrasporangia. Generally, propagules detached above the little pigmented axis which successively regenerated a new propagule. In the field, propagules settled on various substrata and propagule derived plantlets were often observed. As the other species of Alsidium do not form propagules, propagule production by A. corallinum may be considered as a specific character. 45 Il presente lavoro si inserisce nella problematica delle strategie di riproduzione vegetativa. Vengono descritte sia la variabilita morfologica dei propaguli che la loro anatomia, ed ampliata la conoscenza del meccanismo di riproduzione vegetativa che rappresenta un mezzo valido per assicurare la permanenza della specie nello spazio e nel tempo. La rivista ha un fattore d impatto per il 2002 pari a 1,032. Articolo in rivista de Gruyter. 0006 8055 Botanica marina Print Botanica marina Print Bot. mar. Print SARACINO ORESTINA antonella.petrocelli PETROCELLI ANTONELLA ester.cecere CECERE ESTER |