, Volume 171, Issue 2, pp 193–202 | Cite as

No evidence of apomixis in matroclinal progeny from experimental crosses in the genus Fragaria (strawberry) based on RAPDs

  • Houshang Nosrati
  • Adam H. Price
  • Chris C. Wilcock


Crossing experiments in Fragaria have frequently resulted in some matroclinal progeny. These have been attributed to either accidental selfing and/or pollen contamination, or apomixis. In this study 202 carefully controlled intra and interspecific crosses in Fragaria were made. No progeny were produced from 164 interploid crosses made between diploids, hexaploids and octoploids but 38 intraploid crosses resulted in 904 F1 plants, of which 42 (4.6%) were found to be morphologically matroclinal. All matroclinal progeny subsequently studied by RAPDs were found to be hybrids and not apomicts. The absence of apomixis among matroclinal progeny in this study casts doubt on previous reports of apomixis in Fragaria. Our results showed that the complete morphological similarity of progeny to the seed parent, even in recessive characteristics, cannot therefore be taken as evidence of apomixis, and may rather indicate the heterozygosity of the pollen parent, emphasising the need to use DNA markers for confirmation of apomixis.


Apomictic Hybrid origin Matroclinal progeny RAPDs Strawberry 



We thank K. Hummer (National Clonal Germplasm Repository, Corvallis, Oregon, USA) for providing a wide range of Fragaria material and D. Shaw for advice on methods for dormancy removing and seed germination. We also thank H. Nybom for comments on analysing RAPD patterns, M. Swaine and G. Aronne for comments on the manuscript. We thank two anonymous referees for helpful comments and additions to the manuscript.


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Copyright information

© Springer Science+Business Media B.V. 2009

Authors and Affiliations

  • Houshang Nosrati
    • 1
    • 2
  • Adam H. Price
    • 1
  • Chris C. Wilcock
    • 1
  1. 1.Department of Plant and Soil Science, School of Biological SciencesUniversity of AberdeenAberdeenScotland, UK
  2. 2.Department of Plant ScienceUniversity of TabrizTabrizIran

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