Paper · 1944 · Botanical Gazette

Photoperiodicity of Baeria chrysostoma

E. Sivori; F. W. Went

8
claims
15
verbatim quotes
9
citations
2
research areas
—
Not open access

Abstract

1. Baeria chrysostoma is a long-day plant, provided it is grown below 25⚬C. It will grow at light intensities of above 150 f.c., obtained with fluorescent tubes, and responds rapidly to long photoperiods. 2. At least 5 long photoperiods are required for flower initiation, and a 15-hour photoperiod is effective. Plants become sensitive to long photoperiods 5 days after germination; and a few days after the long photoperiodic treatment, microscopic observation shows flower initiation. 3. The intensity of the supplementary light required after an 8-hour photoperiod for flower initiation is above 100 f.c. Both the short and the long wave lengths are effective, but green light is not. The cotyledons and leaves are equally effective in perception of the light effect. 4. No extracts or pure substances induced flowering in plants kept on short photoperiods.

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Claims 8

Observationobservedoriginal resultmeasured

Claim · model-written summary

Baeria chrysostoma is a long-day plant below 25⚬C.

Taxon
Baeria chrysostomae0
Outcome
long-day plante0
Qualifier
below 25⚬Ce0

Not reportedDirection

Verbatim

e0

“Baeria chrysostoma is a long-day plant, provided it is grown below 25⚬C.”

✓ located verbatim in the source · abstract, characters 3–75 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

It grows at light intensities above 150 f.c. and responds rapidly to long photoperiods.

Taxon
Baeria chrysostomat0
Outcome
growe0
Direction
growe0
Value
above 150 f.c.e0

Verbatim

e0

“It will grow at light intensities of above 150 f.c., obtained with fluorescent tubes, and responds rapidly to long photoperiods.”

✓ located verbatim in the source · abstract, characters 76–204 · show in text ↑
t0

“Baeria chrysostoma”

✓ located verbatim in the source · title, characters 20–38 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

At least five long photoperiods are required for flower initiation.

Taxon
Baeria chrysostomat0
Outcome
flower initiatione0
Value
At least 5 long photoperiodse0

Not reportedDirection

Verbatim

e0

“At least 5 long photoperiods are required for flower initiation”

✓ located verbatim in the source · abstract, characters 208–271 · show in text ↑
t0

“Baeria chrysostoma”

✓ located verbatim in the source · title, characters 20–38 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Plants become sensitive to long photoperiods five days after germination.

Taxon
Baeria chrysostomat0
Outcome
sensitive to long photoperiodse0
Value
5 dayse0

Not reportedDirection

Verbatim

e0

“Plants become sensitive to long photoperiods 5 days after germination”

✓ located verbatim in the source · abstract, characters 313–382 · show in text ↑
t0

“Baeria chrysostoma”

✓ located verbatim in the source · title, characters 20–38 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Flower initiation is microscopically visible a few days after long photoperiod treatment.

Taxon
Baeria chrysostomat0
Outcome
flower initiatione0
Qualifier
a few days after the long photoperiodic treatmente0

Not reportedDirection

Verbatim

e0

“a few days after the long photoperiodic treatment, microscopic observation shows flower initiation”

✓ located verbatim in the source · abstract, characters 388–486 · show in text ↑
t0

“Baeria chrysostoma”

✓ located verbatim in the source · title, characters 20–38 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Supplementary light above 100 f.c. after an 8-hour photoperiod is required for flower initiation.

Taxon
Baeria chrysostomat0
Outcome
flower initiatione0
Value
above 100 f.c.e0
Qualifier
after an 8-hour photoperiode0

Not reportedDirection

Verbatim

e0

“The intensity of the supplementary light required after an 8-hour photoperiod for flower initiation is above 100 f.c.”

✓ located verbatim in the source · abstract, characters 491–608 · show in text ↑
t0

“Baeria chrysostoma”

✓ located verbatim in the source · title, characters 20–38 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Cotyledons and leaves were equally effective at perceiving light.

Taxon
Baeria chrysostomat0
Organ / stage
cotyledons and leavese0
Outcome
perception of the light effecte0
Direction
equally effectivee0

Verbatim

e0

“The cotyledons and leaves are equally effective in perception of the light effect.”

✓ located verbatim in the source · abstract, characters 689–771 · show in text ↑
t0

“Baeria chrysostoma”

✓ located verbatim in the source · title, characters 20–38 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

No tested extracts or pure substances induced flowering under short photoperiods.

Taxon
Baeria chrysostomat0
Treatment
extracts or pure substancese0
Outcome
floweringe0
Direction
Noe0
Comparator
short photoperiodse0

Verbatim

e0

“No extracts or pure substances induced flowering in plants kept on short photoperiods.”

✓ located verbatim in the source · abstract, characters 775–861 · show in text ↑
t0

“Baeria chrysostoma”

✓ located verbatim in the source · title, characters 20–38 · show in text ↑