Abstract
Assimilate supply (source) apparently limits grain yield of maize ( Zea mays L.) grown in short‐season areas. One approach to increasing assimilate supply is to increase leaf area per plant. In this 2‐year study, leaf area of a short‐season, single‐cross, hybrid was manipulated by growing plants to tassel initiation under both a long and a short photoperiod. The plants were then transferred to the field. In both years the plants established under the long photoperiod were larger, having more leaves, bigger mean leaf size, and greater leaf area. The larger plants produced higher ear yields, presumably resulting from the greater assimilate supply associated with the greater plant leaf area. The data support the concept that in short‐season regions the selection of genotypes with greater leaf area should result in increased yields.
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Claims 3
Claim · model-written summary
Long photoperiod plants were larger, with more leaves, bigger mean leaf size, and greater leaf area in both years.
- Treatment
- long photoperiode0
- Outcome
- more leaves, bigger mean leaf size, and greater leaf areae0
- Direction
- greatere0
- Qualifier
- In both yearse0
- Comparator
- short photoperiode2
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In both years the plants established under the long photoperiod were larger, having more leaves, bigger mean leaf size, and greater leaf area”
e1“grain yield of maize ( Zea mays L.)”
e2“under both a long and a short photoperiod”
Claim · model-written summary
Larger plants produced higher ear yields, apparently through greater assimilate supply associated with greater leaf area.
- Treatment
- long photoperiode3
- Outcome
- ear yieldse0
- Direction
- highere0
- Qualifier
- presumably resulting from the greater assimilate supply associated with the greater plant leaf areae0
- Comparator
- short photoperiode2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The larger plants produced higher ear yields, presumably resulting from the greater assimilate supply associated with the greater plant leaf area”
e1“grain yield of maize ( Zea mays L.)”
e2“under both a long and a short photoperiod”
e3“In both years the plants established under the long photoperiod were larger, having more leaves, bigger mean leaf size, and greater leaf area”
Claim · model-written summary
The authors recommend selecting genotypes with greater leaf area to increase yields in short-season regions.
- Outcome
- selection of genotypes with greater leaf area should result in increased yieldse0
- Setting
- short‐season regionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in short‐season regions the selection of genotypes with greater leaf area should result in increased yields”
e1“grain yield of maize ( Zea mays L.)”
The same questions in other papers
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28 papers in the same direction as this paper · 27 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
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See all 57 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.