Karyotype Analysis and Evolutional Trend of Geographical Provenances of Arborvitae in China
In this research, Arborvitae seeds from sixteen geographical provenances were used as experimental material to be studied for its karyotype and evolutional trend by using ordinary squash method. The results showed that all the karyotypes formula of the tested sixteen geographical provenances were K(2n)=22=22m, all of which belonged to 1A type, One and or two pairs of the chromosomes were found to carry a satellite, The position of secondary constrictions were not similar in different provenances.; The L chromosome could be found in the chromosome composition based on relative length of the geographical provenances from Lingyuan of Liaoning, Huolu of Hebei, Changzhi of Shanxi, Huangling of Shanxi, Shehong of Sichuan, Nanping of Fujian, and Kunming of Yunnan, the M_2 and M_1 chromosomes can be found in that of others provenances. Based on the cluster analysis and evolutional trend analysis of karyotype in sixteen arborvitae provenances, the arborvitae of Huolu of Hebei might be the most advanced provenance, while that of Dengfeng of Henan would be the most primitive provenance.
Arborvitae (Platycladus orientalis (L.))KaryotypeGeographical provenancesEvolution
NETL
NSTL
万方数据
维普
