青藏高原二种车前属植物的核型和C-值报道

doi:10.7677/ynzwyj201514152

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

青藏高原二种车前属植物的核型和C-值报道

钱敏1、2、3, 王广艳4, 孟盈5, 杨永平1、2、3

1 中国科学院昆明植物研究所东亚植物多样性与生物地理学重点实验室，昆明650201；2 中国科学院昆明植物研究所
西南野生生物种质资源库，昆明650201；3 中国科学院青藏高原研究所昆明部，昆明650201；4 安庆师范学院
生命科学学院，安徽安庆246011；5 吉首大学植物资源保护与利用重点实验室，湖南吉首416000

收稿日期:2014-11-17 出版日期:2015-07-25 发布日期:2015-01-08
基金资助:
国家自然科学基金面上项目（41271058）

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

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）

摘要/Abstract

摘要：

对青藏高原平车前（Plantago depressa） 18个居群和大车前（Plantago major） 2个居群的染色体数目、核型和C值进行了研究。结果表明：西藏亚东县和林芝县的平车前居群染色体数目为2n=4x=24；其它平车前和大车前居群的染色体数目均为2n=2x=12；染色体基数均为x=6；核型类型均为1A型，核型组成和前人的研究结果不尽相同。平车前的2C值为首次报道，随着倍性水平的增加1Cx值降低。大车前的2C值和前人的研究结果存在着差异。平车前和大车前不同居群的2C值发生了变异。流式细胞仪不能用来估测车前属植物的倍性水平。

关键词: 平车前, 大车前, 青藏高原, 核型, C-值

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

中图分类号:

Q 942

钱敏1、2、3, 王广艳4, 孟盈5, 杨永平1、2、3. 青藏高原二种车前属植物的核型和C-值报道[J]. Plant Diversity, 2015, 37(4): 407-415.

QIAN Min-, WANG Guang-Yan-, MENG Ying-, YANG Yong-Ping. Karyotypes and C-values of Two Plantago Species from the QinghaiTibet Plateau, China[J]. Plant Diversity, 2015, 37(4): 407-415.

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青藏高原二种车前属植物的核型和C-值报道

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

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