期刊
GENOME
卷 44, 期 2, 页码 231-238出版社
CANADIAN SCIENCE PUBLISHING
DOI: 10.1139/gen-44-2-231
关键词
Artemisia; Asteraceae; flow cytometry; genome size; nuclear DNA amount variation; systematics; evolution; ecology
Genome size was estimated by flow cytometry in 24 populations belonging to 22 Artemisia taxa (21 species, 1 with two subspecies), which represent the distinct subgenera, life forms, basic chromosome numbers, and ploidy levels in the genus. 2C nuclear DNA content values range from 3.5 to 25.65 pg, which represents a more than sevenfold variation. DNA content per haploid genome ranges from 1.75 to 5.76 pg. DNA amount is very well correlated with karyotype length and ploidy level. Some variations in genome size have systematic and evolutionary implications, whereas others are linked to ecological selection pressures.
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