International Journal on Algae

ISSN for PRINT: 1521-9429

For Online Access

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2005, Volume7

Issue 2

105 pages

DOI: 10.1615/InterJAlgae.v7.i2

Issue price - $216.00

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

We investigated male clones of the heterothallic (dioecious) pennate diatomaceous alga Nitzschia longissima (Bréb.) Ralfs, capable of infrequent intraclonal reproduction. Assuming the diplgenotypic nature of sex inheritance, we experimentally checked the sex of the intraclonal progeny. In the offspring we discovered both male and female clones, which proved to be viable and fertile. Male descendants, in turn, also revealed capability for intraclonal reproduction. Two chosen clones of the second inbred generation proved to be male. During intraclonal reproduction, the sexual process is isogamous, while interclonal reproduction is anisogamous (heterogamous). It is established that the shape and behavior of the gametes are inherited characteristics coupled with sex. The possibility of alternating from "monoecious" to "dioecious" generations in the life cycles of diatoms is discussed.

DOI: 10.1615/InterJAlgae.v7.i2.50 Download article, 136-149 pages

Article price - $35.00

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