Abstract
L.) ears. Failed kernel development in the basal and middle regions of the ear often is neglected because their spaces usually are occupied by adjacent ovaries at harvest. We tested the spatial distribution of kernel losses and potential underlying reasons, from perspectives of silk elongation and carbohydrate dynamics, when maize experienced water deficit during silk elongation. Kernel loss was distributed along the length of the ear regardless of water availability, with the highest kernel set in the middle region and a gradual reduction toward the apical and basal ends. Water deficit limited silk elongation in a manner inverse to the temporal pattern of silk initiation, more strongly in the apical and basal regions of the ear than in the middle region. The limited recovery of silk elongation, especially at the apical and basal regions following rescue irrigation was probably due to water potentials below the threshold for elongation and lower growth rates of the associated ovaries. While sugar concentrations increased or did not respond to water deficit in ovaries and silks, the calculated sugar flux into the developing ovaries was impaired and diverged among ovaries at different positions under water deficit. Water deficit resulted in 58% kernel loss, 68% of which was attributable to arrested silks within husks caused by lower water potentials and 32% to ovaries with emerged silks possibly due to impaired carbohydrate metabolism.
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Claims 8
Claim · model-written summary
Maize kernel set was highest in the ear middle and declined toward the apical and basal ends regardless of water availability.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Kernel loss was distributed along the length of the ear regardless of water availability, with the highest kernel set in the middle region and a gradual reduction toward the apical and basal ends.”
t0“maize”
Claim · model-written summary
Water deficit limited maize silk elongation more in apical and basal ear regions than in the middle.
- Organ / stage
- silke0
- Treatment
- Water deficite0
- Outcome
- silk elongatione0
- Direction
- limitede0
- Qualifier
- apical and basal regions of the eare0
- Comparator
- middle regione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit limited silk elongation in a manner inverse to the temporal pattern of silk initiation, more strongly in the apical and basal regions of the ear than in the middle region.”
t0“maize”
Claim · model-written summary
Limited maize silk elongation recovery after rescue irrigation was probably due to low water potentials and ovary growth rates.
- Organ / stage
- silke0
- Outcome
- limited recovery of silk elongatione0
- Qualifier
- water potentials below the threshold for elongation and lower growth rates of the associated ovariese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The limited recovery of silk elongation, especially at the apical and basal regions following rescue irrigation was probably due to water potentials below the threshold for elongation and lower growth rates of the associated ovaries.”
t0“maize”
Claim · model-written summary
Sugar concentrations in maize ovaries and silks increased or did not respond to water deficit.
- Organ / stage
- ovaries and silkse0
- Treatment
- water deficite0
- Outcome
- sugar concentrationse0
- Direction
- increased or did not responde0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While sugar concentrations increased or did not respond to water deficit in ovaries and silks, the calculated sugar flux into the developing ovaries was impaired and diverged among ovaries at different positions under water deficit.”
t0“maize”
Claim · model-written summary
Calculated sugar flux into developing maize ovaries was impaired and differed by ovary position under water deficit.
- Organ / stage
- developing ovariese0
- Treatment
- water deficite0
- Outcome
- calculated sugar flux into the developing ovariese0
- Direction
- impairede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“While sugar concentrations increased or did not respond to water deficit in ovaries and silks, the calculated sugar flux into the developing ovaries was impaired and diverged among ovaries at different positions under water deficit.”
t0“maize”
Claim · model-written summary
Water deficit caused 58% maize kernel loss.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit resulted in 58% kernel loss, 68% of which was attributable to arrested silks within husks caused by lower water potentials and 32% to ovaries with emerged silks possibly due to impaired carbohydrate metabolism.”
t0“maize”
Claim · model-written summary
Arrested silks within husks associated with lower water potentials accounted for 68% of maize kernel loss.
- Organ / stage
- silks within huskse0
- Outcome
- kernel losse0
- Value
- 68%e0
- Qualifier
- arrested silks within husks caused by lower water potentialse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit resulted in 58% kernel loss, 68% of which was attributable to arrested silks within husks caused by lower water potentials and 32% to ovaries with emerged silks possibly due to impaired carbohydrate metabolism.”
t0“maize”
Claim · model-written summary
Ovaries with emerged silks, possibly affected by impaired carbohydrate metabolism, accounted for 32% of maize kernel loss.
- Organ / stage
- ovaries with emerged silkse0
- Outcome
- kernel losse0
- Value
- 32%e0
- Qualifier
- possibly due to impaired carbohydrate metabolisme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit resulted in 58% kernel loss, 68% of which was attributable to arrested silks within husks caused by lower water potentials and 32% to ovaries with emerged silks possibly due to impaired carbohydrate metabolism.”
t0“maize”
The same questions in other papers
drought · growth · Zea mays (maize)Positive and negative results
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