Plant Soil Environ., 2003, 49(3):106-113 | DOI: 10.17221/4098-PSE

Evaluation of genetic diversity of Brassica napus germplasm from China and Europe assessed by RAPD markers

S.W. HU, J. Ovesná, L. Kučera, V. Kučera, M. Vyvadilová
1 Shaanxi Academy of Agricultural Sciences, Yangling, Shaanxi, China
2 Research Institute of Crop Production, Prague-Ruzyně, Czech Republic

The genetic diversity and the relationships among rapeseed germplasm, including a collection of 20 Chinese, 25 Czech, 2 German, 2 French, and 1 English cultivars and breeding materials were evaluated using random amplified polymorphic DNA (RAPD) markers. A total of 79 different polymorphic amplification products were obtained using10 selected decamer primers. RAPDs revealed a significant level of polymorphism among the accessions. The diversity index (DI) ranged from 1.390 to 3.491, showing a sufficient potential of selected primers to differentiate among studied genotypes. Three different metrics were used to assess genetic diversity. The best fit between a priori knowledge about germplasm origin and a posteriori grouping was found using Hamman metrics. Cluster analysis based on Hamman pairwise distance comparison divided the studied accessions into three main clusters. The first group included only accessions fromChina, the second group only that fromEurope with the exception of Zhongshuang No. 2, a Chinese winter rape possessing European cultivars in the pedigree. The third group included accessions both fromChina andEurope. The results indicate the occurrence of a considerable genetic variation between Chinese and European accessions.

Keywords: Brassica napus; RAPD; genetic diversity; genetic variability

Published: March 31, 2003  Show citation

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HU SW, Ovesná J, Kučera L, Kučera V, Vyvadilová M. Evaluation of genetic diversity of Brassica napus germplasm from China and Europe assessed by RAPD markers. Plant Soil Environ. 2003;49(3):106-113. doi: 10.17221/4098-PSE.
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