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This article in AJ

  1. Vol. 60 No. 6, p. 632-635
    Received: Mar 29, 1968



Rhizome and Tiller Development of Kentucky Bluegrass (Poa pratensis L.) as Influenced by Photoperiod, Cold Treatment, and Variety1

  1. L. E. Moser,
  2. S. R. Anderson and
  3. R. W. Miller2



Two controlled environment experiments were designed to study the effect of photoperiod and a cold treatment on rhizome and tiller development of ‘Merion’ and ‘Windsor’ Kentucky bluegrass (Poa pratensis L.) Evidence is given to support the following conclusions:

  1. A cold treatment is not essential for rhizome formation. Cold treatments increased tillering but reduced the number of rhizomes.

  2. Both initiation and elongation of rhizomes were favored by a 16- or 18-hour photoperiod when compared to a 8- or 12- hour photoperiod.

  3. Tillering showed little response to initial photoperiod, although more tillers were formed with a 12-hour than with an 8- or 18-hour photoperiod in one experiment.

  4. Windsor generally produced more and longer primary and secondary rhizomes than Merion but the latter tillered more profusely than Windsor.

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