Nuclear DNA Content of Haploid and Diploid Physcomitruim pyriforme Using DAPI Staining
2004
Abderrahman, Salim M. (The Hashemite University, Zarqa, Jordan), E-mail: [email protected]
A comparative investigation into nuclear DNA content was carried out in the moss Physcomitruim pyriforme (n=26 and 52) using 4-6-diamidino-2-phenylindole (DAPI) as a flouorochrome. The mean relative DNA contents increase from haploid to diploid plants but they differ significantly from and expected 1 : 2 ratio in haploid and diploid races. Polyploidy has played a main role in generating the cytotypes. It seems likely that haploid and diploid races of P. pyriforme are of long standing autopolyploid.
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