Abstract
Any kind of decrease or inefficiency of corn leaves caused by factors such as pests, diseases, mechanical damages and hail, leads to decrease photo-assimilate translocation to the kernels and yield decrease. In order to investigate the role of each part of maize canopy leaves on yield and yield component, and grain quality, an experiment was conducted in a factorial experiment using randomized complete block design (RCBD) with three replications at the Research Farm of faculty of agriculture, Tabriz University, Tabriz, Iran, during year 2007. maize cultivars were single cross 647, 604, 504 and defoliation treatments contain leaf removal in 1/3 of upper, 1/3 of median, 1/3 of lower part of canopy and control (without defoliation) that imposed at tasseling. The results indicated that while defoliation had significant effects on yield components (except number of row per cob and 100 grain weight ), grain yield per unit area, as well as ear length and leaf area index (LAI), quality of produced grains at defoliation levels including protein percent and oil percent did not differ considerably. The maximum LAI belonged to control and the least to the defoliation of the 1/3 in middle part of the canopy. In this study cultivars affected grain yield and mean 100 grain weight. Since the defoliation treatments had no significant impact on stem dry weight so it is concluded that maize leaves and especially median leaves have crucial role on photosynthesis and yield.
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Claims 12
Claim · model-written summary
Defoliation significantly affected corn yield components other than row number and 100 grain weight.
- Taxon
- CORN
Zea mays subsp. mayst0 - Treatment
- defoliatione0
- Outcome
- yield componentse0
- Qualifier
- except number of row per cob and 100 grain weighte0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicated that while defoliation had significant effects on yield components (except number of row per cob and 100 grain weight ), grain yield per unit area, as well as ear length and leaf area index (LAI), quality of produced grains at defoliation levels including protein percent and oil percent did not differ considerably.”
t0“CORN”
Claim · model-written summary
Defoliation significantly affected corn grain yield per unit area.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- defoliatione0
- Outcome
- grain yield per unit areae0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicated that while defoliation had significant effects on yield components (except number of row per cob and 100 grain weight ), grain yield per unit area, as well as ear length and leaf area index (LAI), quality of produced grains at defoliation levels including protein percent and oil percent did not differ considerably.”
t0“CORN”
Claim · model-written summary
Defoliation significantly affected corn ear length.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- defoliatione0
- Outcome
- ear lengthe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicated that while defoliation had significant effects on yield components (except number of row per cob and 100 grain weight ), grain yield per unit area, as well as ear length and leaf area index (LAI), quality of produced grains at defoliation levels including protein percent and oil percent did not differ considerably.”
t0“CORN”
Claim · model-written summary
Defoliation significantly affected corn leaf area index.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- defoliatione0
- Outcome
- leaf area index (LAI)e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results indicated that while defoliation had significant effects on yield components (except number of row per cob and 100 grain weight ), grain yield per unit area, as well as ear length and leaf area index (LAI), quality of produced grains at defoliation levels including protein percent and oil percent did not differ considerably.”
t0“CORN”
Claim · model-written summary
Defoliation did not considerably change grain protein percent.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- defoliatione0
- Outcome
- protein percente0
- Direction
- did not differ considerablye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“quality of produced grains at defoliation levels including protein percent and oil percent did not differ considerably.”
t0“CORN”
Claim · model-written summary
Defoliation did not considerably change grain oil percent.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- defoliatione0
- Outcome
- oil percente0
- Direction
- did not differ considerablye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“quality of produced grains at defoliation levels including protein percent and oil percent did not differ considerably.”
t0“CORN”
Claim · model-written summary
Control plants had maximum leaf area index.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- controle0
- Outcome
- LAIe0
- Direction
- maximume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum LAI belonged to control and the least to the defoliation of the 1/3 in middle part of the canopy.”
t0“CORN”
Claim · model-written summary
Removal of the middle third of canopy leaves gave the lowest leaf area index.
- Taxon
- CORNZea mays subsp. mayst0
- Treatment
- defoliation of the 1/3 in middle part of the canopye0
- Outcome
- LAIe0
- Direction
- leaste0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum LAI belonged to control and the least to the defoliation of the 1/3 in middle part of the canopy.”
t0“CORN”
Claim · model-written summary
Cultivar affected corn grain yield.
- Taxon
- CORNZea mays subsp. mayst0
- Material
- cultivarse0
- Outcome
- grain yielde0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In this study cultivars affected grain yield and mean 100 grain weight.”
t0“CORN”
Claim · model-written summary
Cultivar affected mean 100 grain weight.
- Taxon
- CORNZea mays subsp. mayst0
- Material
- cultivarse0
- Outcome
- mean 100 grain weighte0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In this study cultivars affected grain yield and mean 100 grain weight.”
t0“CORN”
Claim · model-written summary
Defoliation had no significant impact on stem dry weight.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Since the defoliation treatments had no significant impact on stem dry weight so it is concluded that maize leaves and especially median leaves have crucial role on photosynthesis and yield.”
Claim · model-written summary
The authors conclude that maize leaves, especially median leaves, are crucial for photosynthesis and yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize leaves and especially median leaves have crucial role on photosynthesis and yield.”
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See all 174 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.