Abstract
Abstract Many Arachis species collections do not produce pegs in North Carolina even though they flower profusely. To investigate reasons for the failure of fruiting, nine wild peanut species of section Arachis and three A. hypogaea cultivars representing spanish, valencia and virginia types were evaluated for response to short and long-day treatments in the North Carolina State Phytotron Unit of the Southeastern Environmental Laboratories. The objective of this investigation was to determine the flowering and fruiting responses of Arachis species to short and long-day photoperiods. Plant collections grown under a 9-hour short-day treatment were generally less vigorous, but produced more pegs than corresponding plants grown in long-day treatments which were produced by 9 hours of light plus a 3-hour interruption of the dark period. Annual species produced significantly more flowers and pegs than perennial species during both long and short days. The total number of flowers produced ranged from 0 during short days for A. correntina to more than 300 for A. cardenasii in long-day treatments. Only one plant of each species A. chacoense and A. villosa, and no plants of A. correntina, flowered in short days. Total numbers of pegs produced in short-day treatments were generally greater than in long-day treatments and the ratio of total number of pegs/total number of flowers was consistently greater during short-day treatments. A general trend was observed for more flowers produced in long-day treatments, but more pegs produced in short days. This study indicated that photoperiod can be manipulated to increase the seed set of some species and the success rate of obtaining certain interspecific hybrids. Furthermore, introgression from wild to cultivated species may possibly alter the reproductive capacity of A. hypogaea to photoperiod.
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Claims 11
Claim · model-written summary
Short-day Arachis collections were generally less vigorous than long-day collections.
- Taxon
- Peanut Species
Arachis hypogaeat0 - Treatment
- 9-hour short-day treatmente0
- Outcome
- vigorouse0
- Direction
- lesse0
- Comparator
- long-day treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant collections grown under a 9-hour short-day treatment were generally less vigorous, but produced more pegs than corresponding plants grown in long-day treatments”
t0“Peanut Species”
Claim · model-written summary
Short-day Arachis collections generally produced more pegs than long-day collections.
- Taxon
- Peanut SpeciesArachis hypogaeat0
- Treatment
- 9-hour short-day treatmente0
- Outcome
- pegse0
- Direction
- moree0
- Comparator
- long-day treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant collections grown under a 9-hour short-day treatment were generally less vigorous, but produced more pegs than corresponding plants grown in long-day treatments”
t0“Peanut Species”
Claim · model-written summary
Annual Arachis species produced significantly more flowers than perennial species in both photoperiods.
- Taxon
- Peanut SpeciesArachis hypogaeat0
- Material
- Annual speciese0
- Outcome
- flowerse0
- Direction
- moree0
- Comparator
- perennial speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Annual species produced significantly more flowers and pegs than perennial species during both long and short days.”
t0“Peanut Species”
Claim · model-written summary
Annual Arachis species produced significantly more pegs than perennial species in both photoperiods.
- Taxon
- Peanut SpeciesArachis hypogaeat0
- Material
- Annual speciese0
- Outcome
- pegse0
- Direction
- moree0
- Comparator
- perennial speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Annual species produced significantly more flowers and pegs than perennial species during both long and short days.”
t0“Peanut Species”
Claim · model-written summary
A. correntina produced no flowers during short days.
- Taxon
- A. correntinaArachis correntinae0
- Treatment
- short dayse0
- Outcome
- flowerse0
- Value
- 0e0
Not reportedDirection
Verbatim
e0“The total number of flowers produced ranged from 0 during short days for A. correntina to more than 300 for A. cardenasii in long-day treatments.”
Claim · model-written summary
A. cardenasii produced more than 300 flowers under long-day treatment.
Verbatim
e0“The total number of flowers produced ranged from 0 during short days for A. correntina to more than 300 for A. cardenasii in long-day treatments.”
Claim · model-written summary
Only one A. chacoense plant flowered under short days.
Verbatim
e0“Only one plant of each species A. chacoense and A. villosa, and no plants of A. correntina, flowered in short days.”
Claim · model-written summary
Only one A. villosa plant flowered under short days.
- Taxon
- A. villosa
Arachis villosae0 - Treatment
- short dayse0
- Outcome
- flowerede0
- Value
- one plante0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Only one plant of each species A. chacoense and A. villosa, and no plants of A. correntina, flowered in short days.”
Claim · model-written summary
The peg-to-flower ratio was consistently greater under short days.
- Taxon
- Peanut SpeciesArachis hypogaeat0
- Treatment
- short-day treatmentse0
- Outcome
- ratio of total number of pegs/total number of flowerse0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the ratio of total number of pegs/total number of flowers was consistently greater during short-day treatments.”
t0“Peanut Species”
Claim · model-written summary
Photoperiod manipulation may increase seed set in some Arachis species and improve the success of certain interspecific hybrids.
- Taxon
- Peanut SpeciesArachis hypogaeat0
- Outcome
- photoperiod can be manipulated to increase the seed set of some species and the success rate of obtaining certain interspecific hybridse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This study indicated that photoperiod can be manipulated to increase the seed set of some species and the success rate of obtaining certain interspecific hybrids.”
t0“Peanut Species”
Claim · model-written summary
Introgression from wild to cultivated species may alter reproductive capacity of A. hypogaea in response to photoperiod.
- Taxon
- A. hypogaeaArachis hypogaeae0
- Outcome
- reproductive capacitye0
- Qualifier
- introgression from wild to cultivated speciese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“introgression from wild to cultivated species may possibly alter the reproductive capacity of A. hypogaea to photoperiod.”
The same questions in other papers
light · yield · Arachis hypogaea (peanut)Positive and negative results
7 papers in the same direction as this paper · 10 in the opposite direction
- negative
- negative
- negative
14 papers more in this group
See all 18 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.