[Karyotype analysis of Picris davurica chromosome].
OBJECTIVE
To systematically study Picris davurica Fisch chromosome karyotype.


METHODS
Sections combined with micrograph were used to analyse chromosome.


RESULTS
Chromosome number of normal diploid was 2n = 10, karyotype formula was K (2n) = 10 = 2 m + 8 sm, the relative length was 2n = 10 = 2 L + 2 M2 + 4 M1 + 2 S, which belonged to "3 A" type. The total length of chromosome groups was 12.51 microns, the total length of long arms was 8.36 microns, the AS. K% was 66.83%. The total volume of chromosome was 11.71 microns3.


CONCLUSIONS
Picris davurica chromosome number and morphological character were clear.
Wang
Bing
B
Liaoning College of TCM, Shenyang 110032.
Wang
Fei
F
Liu
Li
L
Yin
Haibo
H
Sha
Ming
M
Li
Kun
K
D019659:Asteraceae / Q000235:genetics*; D002871:Chromosome Banding; D032461:Chromosomes, Plant / Q000648:ultrastructure*; D004171:Diploidy; D007621:Karyotyping; D010946:Plants, Medicinal / Q000235:genetics*