Euphytica

, Volume 54, Issue 1, pp 125–133

Cytogenetic analyses of sugarcane relatives (Andropogoneae: Saccharinae)

  • D. M. Burner
Article

Summary

Meiosis was studied in 31 wild Saccharum relatives, including Erianthus (8 clones), Miscanthus (5 clones), Narenga prophyrocoma (1 clone), S. robustum (3 clones), and S. spontaneum (14 clones). Chromosome number for 18 clones confirmed published counts or was typical of the particular species. Chromosome number for seven clones (Djatiroto 2n=58, Molokai 5099 2n=80, SES 84/58 2n=58, SES 114 2n=64, SES 260 2n=64, Taiwan 100 2n=112, and US 57-11-2 2n=60) differed from published counts (2n=112, 86-100, 64, 60, 60, 96, and 30, respectively). Counts were obtained for the first time for six clones (Local escape 2n=96, Nepal 2n=72, NG 77-77 2n=108–112, NG 77-199 2n=166, US 57-60-2 2n=20, and US 68-1-4 2n=38). Bivalent chromosome pairing predominated in all clones. Meiotic irregularity (numeric aberrations, univalents, multivalents, and telophase II micronuclei) tended to be associated with taxonomic grouping and level of polyploidy. Clones in Erianthus, Miscanthus, and Narenga were apparent euploids (2n=20–60) and tended to have fewer meiotic irregularities than Saccharum clones. Differences in level of meiotic stability among taxonomic groups may reflect error in chromosome association and synapsis associated with high chromosome number.

Key words

Chromosome pairing Erianthus germplasm characterization meiosis Miscanthus Narenga porphyrocoma Saccharum 

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Copyright information

© Kluwer Academic Publishers 1991

Authors and Affiliations

  • D. M. Burner
    • 1
  1. 1.Sugarcane Research Unit, Agricultural Research ServiceU.S. Department of AgricultureHoumaUSA

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