International Journal on Algae

ISSN for PRINT: 1521-9429

For Online Access

Best Paper Award Selection - Editorial Board Site

2002, Volume4

Issue 3

130 pages

Issue price - $216.00

N. A. Davidovich
Karadag State Reserve, National Academy of Sciences of Ukraine, Kwortnoye settl., 98188 Feodosiya, Crimea, Ukraine

Crossing of 38 clones of Nitzschia longissima (Breb.) Ralfs (Bacillariophyta) isolated from the coastal zone of the Black Sea near Karadag (Crimea) was carried out under laboratory conditions. This species is widely distributed in seas and oceans. It was shown that sexual heterogeneity is characteristic of the studied clones. N. longissima was previously believed to be a dioecious species, but was found to possess a more complicated sexual structure. One half of the clones were unisexual, whereas the other half of the clones were capable of unisexual interclonal crossing, and also of limited intraclonal reproduction. Some clones were capable only of intraclonal reproduction. A group of clones was not capable of crossing with the available clones. This group differed from other clones in the number of carinal points. Only male clones producing physiologically active gametes were capable of intraclonal reproduction.

Download article, 13 pages

Article price - $35.00

<< Previous article   Next article >>