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Genetic resources of oilseed Brassica and related species in Gansu Province, China

Published online by Cambridge University Press:  12 February 2007

Wancang Sun ,
Qiyuan Pan ,
Zigang Liu ,
Yaxiong Meng ,
Tao Zhang ,
Heling Wang  and
Xiucong Zeng
Wancang Sun*
Affiliation:
Agronomy College, Gansu Agricultural University, Lanzhou, Gansu 730070, P.R., China
Qiyuan Pan
Affiliation:
National Centre for Health Statistics, 3311 Toledo Road, Room 4431, Hyattsville, MD 20782, USA
Zigang Liu
Affiliation:
Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, P.R., China
Yaxiong Meng
Affiliation:
Agronomy College, Gansu Agricultural University, Lanzhou, Gansu 730070, P.R., China
Tao Zhang
Affiliation:
Gansu Academy of Agricultural Sciences, Lanzhou, Gansu 730070, P.R., China
Heling Wang
Affiliation:
Agronomy College, Gansu Agricultural University, Lanzhou, Gansu 730070, P.R., China
Xiucong Zeng
Affiliation:
Agronomy College, Gansu Agricultural University, Lanzhou, Gansu 730070, P.R., China
*
*Corresponding author: E-mail: wangcangsun@yahoo.com.cn
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Abstract

Vavilov (1935) described China as the earliest and largest independent centre of origin of cultivated plants. Gansu Province occupies the geographic centre of China. With an area of 454,000 km2, latitudes ranging from 32°3′N to 42°57′N and elevations varying from 500 to 6200 m, the province has an extremely diverse climate and topography. Stretching 1653 km along the ancient Silk Road, Gansu also has a long history of agriculture (6000 years) and for centuries was exposed to dynamic cultural exchanges between the East and the West. The unique combination of these conditions allowed rapeseed to be introduced from Europe and the Middle East, to evolve over a long time of cultivation and to diversify to adapt to many types of ecological conditions and cropping systems in Gansu. Currently, rich genetic resources exist in Gansu for Brassica rapa, B. juncea, B. chinensis and Eruca sativa. Eight landraces are described to demonstrate the diversity of rapeseed genetic resources in Gansu. It is generally recognized that B. chinensis originated in China. Information provided in this paper suggests that Gansu and its adjacent regions could also be a centre of diversity for B. rapa and B. juncea.

Keywords

Brassicagenetic diversitygenetic resourcesoilseed crops
Type
Research Article
Information
Plant Genetic Resources , Volume 2 , Issue 3 , December 2004 , pp. 167 - 173
Copyright
Copyright © NIAB 2004

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