Paper · 1977 · Annals of Botany

Flower Development and Senescence in Digitalis purpurea L., cv. Foxy

A. D. STEAD; K. G. MOORE

20
claims
40
verbatim quotes
28
citations
2
research areas
—
Not open access

Abstract

Flowers of Digitalis purpurea L. cv. Foxy, take just over a week to develop from the smallest buds and open. Both the anthers and the stigma are closed when the flower opens, the anterior anthers dehisce 2 days after flower opening and the posterior anthers a day later. The stigma opens 2 days later still and the corolla remains attached for a further 2 days. The maximum size of the corolla is reached soon after opening and then remains constant. The fresh weight increases throughout the attached life of the corolla, whereas the dry weight reaches a maximum at flower opening and decreases during the remainder of the corolla's attached life. The content of antho-cyanin varies greatly from spike to spike. In some spikes the maximum content is at flower opening, in others it is much later, but in all cases the loss of anthocyanin with ageing is very small and the corollas are abcissed without visible wilting or fading. Maximum protein, RNA and glucose contents occur at, or soon after, flower opening and the levels decrease in the corollas as they age. Fructose reaches a maximum at the same time as glucose but does not decrease as rapidly, so that fructose becomes the major reducing sugar in the older corollas. Sucrose cannot be detected in any flowers. Ethylene production increases steadily with flower age, but the maximum production is recorded from flowers which have recently ab-scissed the corolla regardless of whether this occurs before detachment from the spike or within the collection tube.

Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 20

Observationobservedoriginal resultmeasured

Claim · model-written summary

Flowers of Digitalis purpurea cv. Foxy take just over a week to develop from the smallest buds and open.

Taxon
Digitalis purpureaDigitalis purpureae1
Material
cv. Foxye1
Organ / stage
Flowerse1
Outcome
develop from the smallest buds and opene1
Value
just over a weeke1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e1

“Flowers of Digitalis purpurea L. cv. Foxy, take just over a week to develop from the smallest buds and open”

✓ located verbatim in the source · abstract, characters 0–107 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Both the anthers and the stigma are closed when the flower opens.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
anthers and the stigmae2
Outcome
closed when the flower opense2

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e2

“Both the anthers and the stigma are closed when the flower opens”

✓ located verbatim in the source · abstract, characters 109–173 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The anterior anthers dehisce 2 days after flower opening.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
anterior antherse3
Outcome
dehiscee3
Value
2 dayse3

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e3

“the anterior anthers dehisce 2 days after flower opening”

✓ located verbatim in the source · abstract, characters 175–231 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The posterior anthers dehisce a day after the anterior anthers.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
posterior antherse4
Outcome
dehiscee3
Value
a day latere4

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e3

“the anterior anthers dehisce 2 days after flower opening and the posterior anthers a day later”

✓ located verbatim in the source · abstract, characters 175–269 · show in text ↑
e4

“the posterior anthers a day later”

✓ located verbatim in the source · abstract, characters 236–269 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The stigma opens 2 days later still after flower opening.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
stigmae5
Outcome
opense5
Value
2 days later stille5

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e5

“The stigma opens 2 days later still”

✓ located verbatim in the source · abstract, characters 271–306 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The corolla remains attached for a further 2 days after the stigma opens.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
corollae6
Outcome
remains attachede6
Value
2 dayse6

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e6

“the corolla remains attached for a further 2 days”

✓ located verbatim in the source · abstract, characters 311–360 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

The corolla reaches its maximum size soon after opening and then stays constant.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
corollae7
Outcome
size of the corollae7
Qualifier
reached soon after opening and then remains constante7

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e7

“The maximum size of the corolla is reached soon after opening and then remains constant”

✓ located verbatim in the source · abstract, characters 362–449 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Corolla fresh weight increases throughout the attached life of the corolla.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
corollae1
Outcome
fresh weighte1
Direction
increasese1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“The fresh weight increases throughout the attached life of the corolla”

✓ located verbatim in the source · abstract, characters 451–521 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Corolla dry weight reaches a maximum at flower opening.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
corollae1
Outcome
dry weighte1
Direction
maximume1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“the dry weight reaches a maximum at flower opening and decreases during the remainder of the corolla's attached life”

✓ located verbatim in the source · abstract, characters 531–647 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Corolla dry weight decreases during the remainder of the attached life.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
corollae1
Outcome
dry weighte1
Direction
decreasese1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“the dry weight reaches a maximum at flower opening and decreases during the remainder of the corolla's attached life”

✓ located verbatim in the source · abstract, characters 531–647 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Anthocyanin content varies greatly from spike to spike.

Taxon
Digitalis purpureaDigitalis purpureae0
Outcome
content of antho-cyanine1
Qualifier
varies greatly from spike to spikee1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“The content of antho-cyanin varies greatly from spike to spike”

✓ located verbatim in the source · abstract, characters 649–711 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

In some spikes the maximum anthocyanin content is at flower opening, and in others it is much later.

Taxon
Digitalis purpureaDigitalis purpureae0
Outcome
maximum contente1
Qualifier
in others it is much latere1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“In some spikes the maximum content is at flower opening, in others it is much later”

✓ located verbatim in the source · abstract, characters 713–796 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Anthocyanin loss with ageing is very small, and the corollas are abscised without visible wilting or fading.

Taxon
Digitalis purpureaDigitalis purpureae0
Outcome
loss of anthocyanin with ageinge1
Qualifier
very small and the corollas are abcissed without visible wilting or fadinge1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“the loss of anthocyanin with ageing is very small and the corollas are abcissed without visible wilting or fading”

✓ located verbatim in the source · abstract, characters 815–928 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Protein, RNA and glucose contents are maximal at or soon after flower opening.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
flower openinge1
Outcome
protein, RNA and glucose contentse1
Direction
Maximume1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“Maximum protein, RNA and glucose contents occur at, or soon after, flower opening and the levels decrease in the corollas as they age”

✓ located verbatim in the source · abstract, characters 930–1063 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Protein, RNA and glucose levels decrease in the corollas as they age.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
corollase1
Outcome
levelse1
Direction
decreasee1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“Maximum protein, RNA and glucose contents occur at, or soon after, flower opening and the levels decrease in the corollas as they age”

✓ located verbatim in the source · abstract, characters 930–1063 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Fructose reaches a maximum at the same time as glucose but does not decrease as rapidly.

Taxon
Digitalis purpureaDigitalis purpureae0
Outcome
Fructosee1
Direction
maximume1
Qualifier
does not decrease as rapidlye1
Comparator
glucosee1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“Fructose reaches a maximum at the same time as glucose but does not decrease as rapidly”

✓ located verbatim in the source · abstract, characters 1065–1152 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Fructose becomes the major reducing sugar in the older corollas.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
older corollase1
Outcome
fructose becomes the major reducing sugare1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“fructose becomes the major reducing sugar in the older corollas”

✓ located verbatim in the source · abstract, characters 1162–1225 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Sucrose cannot be detected in any flower.

Taxon
Digitalis purpureaDigitalis purpureae0
Outcome
Sucrosee1
Qualifier
cannot be detected in any flowerse1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“Sucrose cannot be detected in any flowers”

✓ located verbatim in the source · abstract, characters 1227–1268 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Ethylene production increases steadily with flower age.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
flower agee1
Outcome
Ethylene productione1
Direction
increasese1
Qualifier
steadily with flower agee1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“Ethylene production increases steadily with flower age”

✓ located verbatim in the source · abstract, characters 1270–1324 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

The maximum ethylene production is recorded from flowers that have recently abscised the corolla, whether before or within the collection tube.

Taxon
Digitalis purpureaDigitalis purpureae0
Organ / stage
corollae1
Outcome
the maximum productione1
Direction
maximume1
Qualifier
regardless of whether this occurs before detachment from the spike or within the collection tubee1

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Digitalis purpurea
Digitalis purpurea · TaxonHonza Groh · CC BY 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Digitalis purpurea”

✓ located verbatim in the source · abstract, characters 11–29 · show in text ↑
e1

“the maximum production is recorded from flowers which have recently ab-scissed the corolla regardless of whether this occurs before detachment from the spike or within the collection tube”

✓ located verbatim in the source · abstract, characters 1330–1517 · show in text ↑