PDR 2015, 37(4) 407-415 DOI:    10.7677/ynzwyj201514152  ISSN: 2095-0845 CN: 53-1217/Q

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Keywords
Plantago depressa
Plantago major
QinghaiTibet Plateau
Karyotype
C-value
Authors
QIAN Min-1、2、3
WANG Guang-Yan-4
MENG Ying-5
YANG Yong-Ping-1、2、3
PubMed
Article by Qian, M. 1、2、3
Article by Wang, G. Y. 4
Article by Meng, Y. 5
Article by Yang, Y. P. 1、2、3

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 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

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.

Keywords Plantago depressa   Plantago major   QinghaiTibet Plateau   Karyotype   C-value  
Received 2014-11-17 Revised  Online: 2015-01-08 
DOI: 10.7677/ynzwyj201514152
Fund:

国家自然科学基金面上项目 (41271058)

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