Plant Diversity ›› 2015, Vol. 37 ›› Issue (4): 407-415.doi: 10.7677/ynzwyj201514152

• Articles • Previous Articles     Next Articles

Karyotypes and C-values of Two Plantago Species from the QinghaiTibet Plateau, China

 QIAN  Min-1、2、3, WANG  Guang-Yan-4, MENG  Ying-5, YANG  Yong-Ping-1、2、3   

  1. 1 Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences,
    Kunming 650201, China; 2 Germplasm Bank of Wild Species in Southwest China, Kunming Institute of Botany,
    Chinese Academy of Sciences, Kunming  650201, China; 3 Institute of Tibetan Plateau Research at Kunming,
    Chinese Academy of Sciences, Kunming, 650201, China; 4 School of Life Sciences, Anqing Normal University,
    Anqing, Anhui 246011, China; 5 Key Laboratory of Plant Resource Conservation and Utilization,
    Jishou University, Jishou, Hunan 426000, China
  • Received:2014-11-17 Online:2015-07-25 Published:2015-01-08
  • Supported by:

    国家自然科学基金面上项目 (41271058)

Abstract:

The chromosome numbers, karyotypes and Cvalues of 18 populations of Plantago depressa and 2 populations of Plantago major from the QinghaiTibet Plateau, China, were reported in the present study. The results were as follows: the chromosome numbers of P. depressa populations from Yadong County and Nyingchi County of Tibetan Autonomous Region (TAR) were 2n=4x=24, other populations of Pdepressa and Pmajor were 2n=2x=12, and the basic chromosome number of all populations was x=6. All karyotype types were 1A, and the karyotype constitutions were not completely consistent with previous reported results. The 2Cvalue of Pdepressa was reported for the first time, and the 1Cxvaule tended to decrease with increasing ploidy levels. Meanwhile, the 2Cvalue of Pmajor was not identical with previous existing results. The results showed that the variation of 2Cvalue occurred at the interpopulation level of Pdepressa and Pmajor, also flow cytometry couldn′t be used to estimate the ploidy of the genus Plantago Linn.

Key words: Plantago depressa, Plantago major, QinghaiTibet Plateau, Karyotype, C-value

CLC Number: 

  • Q 942