Genetic Resources and Crop Evolution

, Volume 47, Issue 3, pp 273–279

Establishment of sesame germplasm core collection in China

  • Zhang Xiurong
  • Zhao Yingzhong
  • Cheng Yong
  • Feng Xiangyun
  • Guo Qingyuan
  • Zhou Mingde
  • Toby Hodgkin
Article

DOI: 10.1023/A:1008767307675

Cite this article as:
Xiurong, Z., Yingzhong, Z., Yong, C. et al. Genetic Resources and Crop Evolution (2000) 47: 273. doi:10.1023/A:1008767307675

Abstract

A sesame core collection containing 453 accessions was established by assessing genetic diversity of 4251 accessions collected in China. The accessions in the whole collection were grouped based on their origin, varietal and agro-ecological type. A computer program was used to cluster the data of 14 traits from the random small sample. Ward's method was chosen as the desirable method for clustering sesame germplasm resources. A set of technical methods for establishing core collection has been developed through determining the number of selected accessions based on the diversity distribution. The agronomic traits of the pre-selected core collection were investigated and tested in three ecological locations in China for two years. Among six qualitative traits, including plant type and flower color in a total of 5304 accessions, 97.85% was completely the same as the original data, and three quantitative traits, including growth period and plant height, were significantly and positively related with the original data. The representativeness assessment of the final core collection indicated that 35 phenotypes of 10 qualitative traits in the core collection were basically similar to those of the pre-selected core collection. Six feature values such as mean, standard deviation etc. of four quantitative traits including oil content and 1000-seed weight were close to those of the pre-selected core collection. The final core collection possessed a fair representativeness of the pre-selected core collection.

characterization core collection sesame germplasm 

Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • Zhang Xiurong
    • 1
  • Zhao Yingzhong
    • 1
  • Cheng Yong
    • 1
  • Feng Xiangyun
    • 1
  • Guo Qingyuan
    • 1
  • Zhou Mingde
    • 2
  • Toby Hodgkin
    • 3
  1. 1.Oil Crops Research Institute of CAASHubei provinceChina
  2. 2.IPGRI East Asia OfficeBeijingChina
  3. 3.IPGRIRomeItaly