木荷种源遗传多样性和种源区初步划分

doi:10.11707/j.1001-7488.20060207

Scientia Silvae Sinicae ›› 2006, Vol. 42 ›› Issue (2): 38-42.doi: 10.11707/j.1001-7488.20060207

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Genetic Diversity Analysis and Provenance Zone Allocation of Schima superba in China Using RAPD Markers

Zhang Ping¹,Zhou Zhichun¹,Jin Guoqing¹,Fan Huihua²,Hu Hongbao³

1. The Research Institute of Subtropical Forestry, CAF Fuyang 311400; 2. The Extending Center for Forestry Science and Technology of Jian'ou city, Fujian Province Jian'ou 353100; 3. Forestry Bureau of Chun'an County, Zhejiang Province Chun'an 311700

Received:2004-03-19 Revised:1900-01-01 Online:2006-02-25 Published:2006-02-25

Abstract

Abstract:

Genetic diversity and genetic structure of l5 provenances from main natural range of Schima superba, an effective biological fire-resistance and high-quality timber species in South China, were analyzed using RAPD markers. It was indicated that there existed a high degree of genetic diversity for S. superba. Nei's gene diversity was 0.363 6. Shannon's information index of provenances was significantly and negatively related to the latitudes of the seed sources. The southern provenances had higher genetic diversity than the northern ones. The natural distribution area at latitude of approximately 25°N may be the central distribution zones of S. superba. Genetic differentiation among provenances was found to be high, and 27.14% of genetic variation existed among provenances. Based on the Nei’s unbiased genetic distance, the whole natural range of S. superba might be obviously divided into North provenance zone (the south of Anhui Province and the north of Zhejiang Province), Middle provenance zone (the north of Nanling mountain and the south of South Zhejiang) and South provenance zone (the south of Nanling mountain). The South and Middle provenance zone could all be further subdivided into East and West sub-zones.

Key words: Schima superba, RAPD, genetic diversity, genetic differentiation, provenance zone allocation

Zhang Ping;Zhou Zhichun;Jin Guoqing;Fan Huihua;Hu Hongbao. Genetic Diversity Analysis and Provenance Zone Allocation of Schima superba in China Using RAPD Markers[J]. Scientia Silvae Sinicae, 2006, 42(2): 38-42.

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Genetic Diversity Analysis and Provenance Zone Allocation of Schima superba in China Using RAPD Markers

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