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Heading of Perennial Grasses Under Greenhouse Conditions 1
Author(s) -
Hanson A. A.,
Sprague V. G.
Publication year - 1953
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/agronj1953.00021962004500060006x
Subject(s) - perennial plant , forage , citation , heading (navigation) , agronomy , agricultural experiment station , pasture , agriculture , virginia tech , greenhouse , political science , library science , geography , biology , computer science , law , archaeology , geodesy
HEADING and flowering of perennial forage grasses under greenhouse conditions during the winter months are dependent upon the three major environmental factors of daylength, temperature, and soil fertility (1, 2, 3, and 5). Variations in regularity of heading among and within some species may be attributed to differences in greenhouse temperatures prior to or during long-day treatments. Newell (4) has reported that panicle production in smooth bromegrass depends on subjecting plants to short days and cool temperatures before increasing the length of the photoperiod. Two experiments were conducted to determine the effect of temperature on the initiation of floral primordia, interval to heading, and the number of panicles produced in orchardgrass, Dactylis glomerata L., meadow fescue, Festuca elatior L., smooth bromegrass, Bromus inermis Leyss, reed canarygrass, Phalaris arundinacea L., and timothy, Phleum pratense L. The results are discussed from the standpoint of practical greenhouse management.