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Rhizome and Tiller Development of Kentucky Bluegrass (Poa pratensis L.) as Influenced by Photoperiod, Cold Treatment, and Variety 1
Author(s) -
Moser L. E.,
Anderson S. R.,
Miller R. W.
Publication year - 1968
Publication title -
agronomy journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.752
H-Index - 131
eISSN - 1435-0645
pISSN - 0002-1962
DOI - 10.2134/agronj1968.00021962006000060014x
Subject(s) - rhizome , windsor , tiller (botany) , photoperiodism , poa pratensis , biology , agronomy , botany , horticulture , poaceae , ecology
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: A cold treatment is not essential for rhizome formation. Cold treatments increased tillering but reduced the number of rhizomes. Both initiation and elongation of rhizomes were favored by a 16‐ or 18‐hour photoperiod when compared to a 8‐ or 12‐ hour photoperiod. 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. Windsor generally produced more and longer primary and secondary rhizomes than Merion but the latter tillered more profusely than Windsor.