Towards the first linkage map of the Didymella rabiei genome

J. Lichtenzveig, P. Winter, S. Abbo, D. Shtienberg, W. J. Kaiser, G. Kahl

Research output: Contribution to journalArticlepeer-review

7 Scopus citations


A genetic map was developed for the ascomycete Didymella rabiei (Kovachevski) v. Arx (anamorph: Ascochyta rabiei Pass. Labr.), the causal agent of Ascochyta blight in chickpea (Cicer arietinum L.). The map was generated with 77 F1 progeny derived from crossing an isolate from the U.S.A. and an isolate from Syria. A total of 232 DAF (DNA Amplification Fingerprinting) primers and 37 STMS (Sequence-Tagged Microsatellite Site) primer pairs were tested for polymorphism between the parental isolates; 50 markers were mapped, 36 DAFs and 14 STMSs. These markers cover 261.4cM in ten linkage groups. Nineteen markers remained unlinked. Significant deviation from the expected 1:1 segregation ratios was observed for only two markers (Prob. of χ2 <0.05). The implications of our results on ploidy level of the asexual spores are discussed.

Original languageAmerican English
Pages (from-to)467-472
Number of pages6
Issue number5
StatePublished - 2002

Bibliographical note

Funding Information:
J. Lichtenzveig acknowledges fellowship support from the Deutscher Akademischer Austauschdienst (DAAD) and UNESCO (Paris, France). This project was supported by a grant from BMZ, Germany (No. 89.7860-01.130). The authors thank anonymous reviewers for their comments.


  • Ascochyta blight
  • Chickpea
  • DAF
  • Linkage map
  • Molecular markers
  • Ploidy level
  • STMS


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