Paper · 1990 · Experimental Agriculture

The Effect of Photoperiod on the Reproductive Development of a Photoperiod Sensitive Groundnut (Arachis hypogaea L.) Cv. NC Ac 17090

Marie-Luise Flohr; J. H. Williams; F. Lenz

5
claims
11
verbatim quotes
25
citations
2
research areas
—
Not open access

Abstract

SUMMARY The physiological basis for responses to daylength of a photoperiod sensitive groundnut genotype (NC Ac 17090) was investigated by comparing its growth and development in natural daylength with that in an artificially manipulated photoperiod in three field experiments. Photoperiod did not influence the thermal time to flowering, or the subsequent appearance of flowers until 900–950 flowers m −2 had appeared. Thereafter flowers continued to appear in short, but not in long, days. In each experiment, long days increased the thermal time between the initiation of each peg and pod, and the thermal time required for each fruit to mature. These fruit initiation and developmental changes were reflected in the partitioning of assimilates to pods, this being substantially less in long days than in short. Changes in pod initiation rate, partitioning co-efficient, and the thermal time taken for a pod to mature were related to mean daylength.

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Claims 5

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Photoperiod did not influence the thermal time to flowering of groundnut.

Taxon
Arachis hypogaeaArachis hypogaeat0
Material
NC Ac 17090t0
Treatment
Photoperiode1
Outcome
thermal time to floweringe1
Direction
no_changeinferrede1

Not reportedComparator

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Groundnut (Arachis hypogaea L.) Cv. NC Ac 17090”

✓ located verbatim in the source · title, characters 85–132 · show in text ↑
e1

“Photoperiod did not influence the thermal time to flowering”

✓ located verbatim in the source · abstract, characters 278–337 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Flowers continued to appear in short days but not in long days after 900-950 flowers per square metre had appeared.

Taxon
Arachis hypogaeaArachis hypogaeat0
Material
NC Ac 17090t0
Treatment
shorte2
Outcome
flowers continued to appeare2
Value
900–950 flowers m −2e3
Comparator
longe2

Not reportedDirection

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Groundnut (Arachis hypogaea L.) Cv. NC Ac 17090”

✓ located verbatim in the source · title, characters 85–132 · show in text ↑
e2

“Thereafter flowers continued to appear in short, but not in long, days”

✓ located verbatim in the source · abstract, characters 420–490 · show in text ↑
e3

“appearance of flowers until 900–950 flowers m −2 had appeared”

✓ located verbatim in the source · abstract, characters 357–418 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Long days increased the thermal time between peg initiation and pod initiation, and the thermal time for each fruit to mature.

Taxon
Arachis hypogaeaArachis hypogaeat0
Material
NC Ac 17090t0
Treatment
long dayse4
Outcome
thermal time between the initiation of each peg and pod, and the thermal time required for each fruit to maturee4
Direction
increasede4

Not reportedComparator

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Groundnut (Arachis hypogaea L.) Cv. NC Ac 17090”

✓ located verbatim in the source · title, characters 85–132 · show in text ↑
e4

“long days increased the thermal time between the initiation of each peg and pod, and the thermal time required for each fruit to mature”

✓ located verbatim in the source · abstract, characters 512–647 · show in text ↑
Intervention effectobservedoriginal resultmeasured

Claim · model-written summary

Assimilate partitioning to pods was substantially less in long days than in short days.

Taxon
Arachis hypogaeaArachis hypogaeat0
Material
NC Ac 17090t0
Treatment
long dayse5
Outcome
partitioning of assimilates to podse5
Direction
lesse5
Comparator
shorte5

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Groundnut (Arachis hypogaea L.) Cv. NC Ac 17090”

✓ located verbatim in the source · title, characters 85–132 · show in text ↑
e5

“the partitioning of assimilates to pods, this being substantially less in long days than in short”

✓ located verbatim in the source · abstract, characters 716–813 · show in text ↑
Associationobservedoriginal resultmeasured

Claim · model-written summary

Pod initiation rate, partitioning coefficient and thermal time for pod maturity were related to mean daylength.

Taxon
Arachis hypogaeaArachis hypogaeat0
Material
NC Ac 17090t0
Treatment
mean daylengthe6
Outcome
pod initiation rate, partitioning co-efficient, and the thermal time taken for a pod to maturee6

Not reportedDirection

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

Arachis hypogaea
Arachis hypogaea · Taxon葉子 · CC0 · iNaturalist ↗

Verbatim

t0

“Groundnut (Arachis hypogaea L.) Cv. NC Ac 17090”

✓ located verbatim in the source · title, characters 85–132 · show in text ↑
e6

“Changes in pod initiation rate, partitioning co-efficient, and the thermal time taken for a pod to mature were related to mean daylength”

✓ located verbatim in the source · abstract, characters 815–951 · show in text ↑

light · phenology · Arachis hypogaea (peanut)Positive and negative results

4 papers: 1 positive, 3 negative or no effect

2 papers in the same direction as this paper · 1 in the opposite direction

  1. positive
  2. negative
  3. no effect
See all 4 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.