Summary
The genetic diversity and relationships among 63 rapeseed accessions, including 34 Chinese, 22 Czech, 2 Swedish, 2 German, one French and 2 Canadian accessions, were evaluated by nine agronomically important characters in the field at Yangling, Shaanxi, China. Significant differences between Chinese and European group in plant height, setting position of the first primary branch, number of siliques of the terminal raceme, thousand seed weight and seed yield per plant were detected. There were significant variations in nine agronomic characters among the tested rapeseed accessions. Ward’s minimum variance cluster analysis based on Mahalanobis distances on the raw data of nine agronomic characters clearly separated the European accessions from the Chinese ones. However, the Chinese accessions with erucic acid free and/or low glucosinolates could not be separated from those Chinese accessions with both high erucic acid and glucosinolates. In general, cluster analysis of the 63 accessions based on the selected agronomic characters was consistent with known pedigree information and geographic origin, as well as the previous RAPD results of these accessions. The European rapeseed could be important germplasm resources for enriching the genetic background of Chinese rapeseed, and vice versa.
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Acknowledgments
This work was supported by Sino-Czech Sci-Tech Cooperative Project (37-18), Chunhui Project of Ministry of Education of Chinese Center Government (Z2004-1-61007), ``948” project of Ministry of Agriculture of Chinese Center Government (2003-Z31), Research grant of Northwest A&F University for the Excellent Young Scientists (04ZR006) and The Program for Excellent Young Talents in Northwest A&F University. The authors thank two anonymous reviewers and Dr. Liecun Zhu at Entomology department, Kansas State University, USA for comments on the manuscript.
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Hu, S., Yu, C., Zhao, H. et al. Genetic diversity of Brassica napus L. Germplasm from China and Europe assessed by some agronomically important characters. Euphytica 154, 9–16 (2007). https://doi.org/10.1007/s10681-006-9263-8
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DOI: https://doi.org/10.1007/s10681-006-9263-8