内蒙古高原甘蒙锦鸡儿的遗传分化研究

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Abstract

Some morphological characteristics of leaf and genetic structures of C.opulens populations which are found in Helinger(a semi-arid/partial humid region with lower temperature,lower light intensity and shorter sun time)and Alashan(an intensively droughty region with higher temperature,higher light intensity and longer sun time) were comparatively studied in this paper in order to understand the adaptation mechanism of the species to its habitat.The results indicated that leaf blade area,thickness,thickness/area,length/width,biomass and specific leaf area(SLA) of Alashan populations were different from Helinger population.Alashan populations were better in water protecting than Helinger population.As a result,they are better adaptation to arid environment than Helinger population.By comparing the genetic structures of the two populations,we can find that the genetic differentiation had occurred between Caragana opulens populations(genetic similarity coefficient was 0.711).This may indicate that the adaptation of Caragana opulens populations to its habitats take place at molecule level,and the population differentiation occur on the basis of genetic variability.

Key words： Caragana opulens Kom. Genetic differentiation Morphology

Received: 25 February 2006

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	Articles by authors
	MA Cheng-cang
	GAO Yu-bao
	GUO Hong-yu
	LIU Hui-fen
	WANG Jin-long

Cite this article:

MA Cheng-cang,GAO Yu-bao,GUO Hong-yu, et al. Studies on Genetic Differentiation of Caragana opulens in Inner Mongolia Plateau[J]. , 2006, 25(1): 1-3.

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http://www.ecolsci.com/EN/ OR http://www.ecolsci.com/EN/Y2006/V25/I1/1

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