Paper · 1972 · Journal of the American Society for Horticultural Science

Effect of Daylength, Light Intensity, and Temperature On Growth and Flowering in Roses1

Roar Moe

16
claims
31
verbatim quotes
43
citations
3
research areas
✓
Open access · cc-by-nc-nd

Abstract

Abstract Increasing daylength inhibited budbreak, while high temp hastened it. The initiation of flowering was promoted by high light intensity and long days. The effect of daylength was temp dependent. At low temp rose shoots differentiated more leaves before flower initiation with short days than with long days, while at high temp there was no significant difference. Rate of shoot growth was stimulated by long day and high temp. The final length of shoots at flowering was significantly longer with 16-hr days than shorter days, while increasing temp and light intensity decreased shoot length. Growth of the uppermost internodes, especially the neck, was most sensitive to daylength, temp, and light intensity. The number of days from cut back until flowering was decreased by increasing daylength, temp, and light intensity. The great fluctuation in number of days from cut to cut in greenhouse roses in the course of the year was due to change in light intensity, daylength, and temp.

Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nc-nd. Read at the source ↗

The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.

Claims 16

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Increasing daylength inhibited rose budbreak.

Taxon
Rosest0
Treatment
Increasing daylengthe0
Outcome
budbreake0
Direction
inhibitede0

Not reportedComparator

Verbatim

e0

“Increasing daylength inhibited budbreak”

✓ located verbatim in the source · abstract, characters 9–48 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

High temperature hastened rose budbreak.

Taxon
Rosest0
Treatment
high tempe0
Outcome
budbreake0
Direction
hastenede0

Not reportedComparator

Verbatim

e0

“Increasing daylength inhibited budbreak, while high temp hastened it”

✓ located verbatim in the source · abstract, characters 9–77 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

High light intensity promoted flower initiation.

Taxon
Rosest0
Treatment
high light intensitye0
Outcome
initiation of floweringe0
Direction
promotede0

Not reportedComparator

Verbatim

e0

“The initiation of flowering was promoted by high light intensity and long days”

✓ located verbatim in the source · abstract, characters 79–157 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Long days promoted flower initiation.

Taxon
Rosest0
Treatment
long dayse0
Outcome
initiation of floweringe0
Direction
promotede0

Not reportedComparator

Verbatim

e0

“The initiation of flowering was promoted by high light intensity and long days”

✓ located verbatim in the source · abstract, characters 79–157 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

At low temperature, short days led to more leaves before flower initiation than long days.

Taxon
Rosest0
Treatment
short dayse0
Outcome
leaves before flower initiatione0
Direction
moree0
Qualifier
At low tempe0
Comparator
long dayse0

Verbatim

e0

“At low temp rose shoots differentiated more leaves before flower initiation with short days than with long days”

✓ located verbatim in the source · abstract, characters 203–314 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultno effectnot significant (as stated)measured

Claim · model-written summary

At high temperature, leaf number before flower initiation did not differ significantly between daylengths.

Taxon
Rosest0
Treatment
daylengthe0
Outcome
leaves before flower initiatione0
Direction
no significant differencee0
Qualifier
high tempe0

Not reportedComparator

Verbatim

e0

“The effect of daylength was temp dependent. At low temp rose shoots differentiated more leaves before flower initiation with short days than with long days, while at high temp there was no significant difference”

✓ located verbatim in the source · abstract, characters 159–370 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Long days stimulated shoot growth rate.

Taxon
Rosest0
Treatment
long daye0
Outcome
Rate of shoot growthe0
Direction
stimulatede0

Not reportedComparator

Verbatim

e0

“Rate of shoot growth was stimulated by long day and high temp”

✓ located verbatim in the source · abstract, characters 372–433 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

High temperature stimulated shoot growth rate.

Taxon
Rosest0
Treatment
high tempe0
Outcome
Rate of shoot growthe0
Direction
stimulatede0

Not reportedComparator

Verbatim

e0

“Rate of shoot growth was stimulated by long day and high temp”

✓ located verbatim in the source · abstract, characters 372–433 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultsignificant (as stated)measured

Claim · model-written summary

Shoots at flowering were longer under 16-hour days than shorter days.

Taxon
Rosest0
Treatment
16-hr dayse0
Outcome
final length of shoots at floweringe0
Direction
longere0
Comparator
shorter dayse0

Verbatim

e0

“The final length of shoots at flowering was significantly longer with 16-hr days than shorter days”

✓ located verbatim in the source · abstract, characters 435–533 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Increasing temperature decreased shoot length.

Taxon
Rosest0
Treatment
increasing tempe0
Outcome
shoot lengthe0
Direction
decreasede0

Not reportedComparator

Verbatim

e0

“increasing temp and light intensity decreased shoot length”

✓ located verbatim in the source · abstract, characters 541–599 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Increasing light intensity decreased shoot length.

Taxon
Rosest0
Treatment
light intensitye0
Outcome
shoot lengthe0
Direction
decreasede0

Not reportedComparator

Verbatim

e0

“increasing temp and light intensity decreased shoot length”

✓ located verbatim in the source · abstract, characters 541–599 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The uppermost internodes, especially the neck, were most sensitive to daylength, temperature and light intensity.

Taxon
Rosest0
Organ / stage
uppermost internodese0
Outcome
Growth of the uppermost internodese0
Qualifier
most sensitive to daylength, temp, and light intensitye0

Verbatim

e0

“Growth of the uppermost internodes, especially the neck, was most sensitive to daylength, temp, and light intensity”

✓ located verbatim in the source · abstract, characters 601–716 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing daylength shortened the interval from cutback to flowering.

Taxon
Rosest0
Treatment
increasing daylengthe0
Outcome
number of days from cut back until floweringe0
Direction
decreasede0

Not reportedComparator

Verbatim

e0

“The number of days from cut back until flowering was decreased by increasing daylength, temp, and light intensity”

✓ located verbatim in the source · abstract, characters 718–831 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing temperature shortened the interval from cutback to flowering.

Taxon
Rosest0
Treatment
tempe0
Outcome
number of days from cut back until floweringe0
Direction
decreasede0

Not reportedComparator

Verbatim

e0

“The number of days from cut back until flowering was decreased by increasing daylength, temp, and light intensity”

✓ located verbatim in the source · abstract, characters 718–831 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Increasing light intensity shortened the interval from cutback to flowering.

Taxon
Rosest0
Treatment
light intensitye0
Outcome
number of days from cut back until floweringe0
Direction
decreasede0

Not reportedComparator

Verbatim

e0

“The number of days from cut back until flowering was decreased by increasing daylength, temp, and light intensity”

✓ located verbatim in the source · abstract, characters 718–831 · show in text ↑
t0

“Roses”

✓ located verbatim in the source · title, characters 81–86 · show in text ↑
Mechanismauthor interpretationoriginal resultmeasured

Claim · model-written summary

Seasonal fluctuations in greenhouse rose cutting intervals were attributed to light intensity, daylength and temperature.

Taxon
rosese0
Outcome
number of days from cut to cute0
Qualifier
change in light intensity, daylength, and tempe0
Setting
greenhousee0

Verbatim

e0

“The great fluctuation in number of days from cut to cut in greenhouse roses in the course of the year was due to change in light intensity, daylength, and temp”

✓ located verbatim in the source · abstract, characters 833–992 · show in text ↑

light · phenology · RosaPositive and negative results

15 papers: 12 positive, 3 negative or no effect

11 papers in the same direction as this paper · 3 in the opposite direction

  1. no effect
  2. negative
  3. no effect

11 papers more in this group

See all 15 papers →

light · growth · RosaPositive and negative results

28 papers: 23 positive, 5 negative or no effect

22 papers in the same direction as this paper · 5 in the opposite direction

  1. negative
  2. no effect
  3. no effect

24 papers more in this group

See all 28 papers →

Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.