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Thermoperiodism. It has often been observed that plants grow worse in constant
temperatures than with a periodic change in temperature, e.g. relatively cool
during the dark period and relatively warm during the photoperiod. Figure 25.19 ...
Hans Mohr, Peter Schopfer, 1995
2
Introducing Biological Rhythms: A Primer on the Temporal ...
Thermoperiodism and Temperature Cycles Equally important as the LD cycle, if
not more so in certain organisms, is the 24-h cycle in temperature (Went 1957,
1962, 1974; Liu et al., 1998). The promotion of development by a change
between ...
Willard L. Koukkari, Robert B. Sothern, 2007
3
Meristems, Growth, and Development in Woody Plants: An ...
Circadian Rhythms and Thermoperiodism Even under favorable photoperiodic
conditions some plants are adversely affected by constant temperature and
respond markedly to a day-night temperature differential. Pyrus ussuriensis gives
such ...
John Albert Romberger, 1963
4
Environmental Control of Plant Growth
I. Thermoperiodism One of the first major discoveries in phytotron work was that
of thermoperiodism. Went and co-workers showed that optimal growth in
tomatoes and many other plants was not obtained unless the plants were grown
under ...
5
Seed Ecophysiology of Temperate and Boreal Zone Forest Trees
The complexity of thermoperiodism (and its investigation) is illustrated in Figure
9.10. There is a lot of good evidence for a response to temperature fluctuation (
i.e., thermoperiodism) in herbaceous perennials and annuals; there is very little
to ...
6
Sorghum: Origin, History, Technology, and Production
Thermoperiodism was shown to exist in sorghum when shifting a 1 2-hour 30°C/2
1°C thermoperiod out of synchrony with a 12-hour photoperiod caused plants to
initiate much earlier than plants grown under synchronous thermo- and ...
C. Wayne Smith, Richard A. Frederiksen, 2000
7
AGRICULTURAL METEOROLOGY
3.8.3 Thermoperiodism The response of plants to diurnal or seasonal fluctuation
in temperature is known as thermoperiodism. A number of physiological
processes, including germination, stem elongation, fruiting, floral development
and ...
G.S.L.H.V. PRASADA RAO, 2008
8
Environment and the Experimental Control of Plant Growth
... response of plants to a periodically fluctuating temperature such as the
differences between day and night temperatures. The phenomenon of
thermoperiodism as a controlling factor in plant growth was first described by
F. W. Went (1944).
9
Agriculture in Dry Lands: Principles and Practice
Basically, the protection is provided by an accumulation of sugars and their
derivatives, which reduce, during freezing, the concentration of potentially
membrane-toxic compounds. Thermoperiodism. Changes in temperature
between day and ...
THERMOPERIODISM AND THERMONASTY For a long time, growers have
recognized that many plants grow better when grown under alternating day/night
temperature regimens. Tomatoes, for example, grow poorly when grown at
constant ...
