Ploidy variation in the group ofMyosotis palustris andM. laxa in the Czech Republic and Slovakia
Copyright policy )Ploidy variation in the group ofMyosotis palustris andM. laxa in the Czech Republic and Slovakia
In 74 natural populations of theMyosotis palustris andM. laxa groups from former Czechoslovakia three euploid and one aneuploid cytotypes were found that belong to the following species:M. nemorosaBesser, 2n=22,M. palustris (L.)Nath. em.Reichenb. inSturm, 2n=66,M. laxifloraReichenb., 2n=66,M. radicansOpiz, 2n=66(64),M. brevisetacea(Schuster) Holub, 2n=66(64), andM. caespitosaC.F. Schultz, 2n=88. With the exception ofM. nemorosa, the chromosome numbers are published for the first time for the Czech Republic. The chromsome numbers, 2n=66, 2n=64 are found inM. brevisetacea, are new for the literature. The correlation between pollen size and ploidy level has been studied as well, and statistically significant differences were found between cytotypes belonging to different ploidy levels.
- Czech Academy of Sciences Czech Republic
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