Abstract
Determining the effects of progressive drought (PD) on dry matter production, partitioning, and grain yield of maize will help in designing a suitable strategy for water management. Though influences of drought on maize growth and development have been investigated extensively, few of them focused on the effects of different duration and occurrence stage of PD on yield formation of maize. Six variations of PD, in the form of withholding irrigation for varying lengths of time from jointing or tasselling, were tested in the field, using a mobile rain shelter, in terms of their effects on aboveground biomass accumulation, partitioning, and grain yield in 2015-2016. The results showed that grain yield was significantly reduced by PD during either vegetative or reproductive stage, and the reduction in grain yield from reproductive PD (41.6-46.6%) was greater than that from vegetative PD (18.6-26.2%). The decrease in grain yield was largely caused by the decrease in kernels per ear (r2 = 0.88, P < 0.001). This research implied that guaranteeing water supply for maize during reproductive stage is crucially important to avoid the reduction in kernels per ear and grain yield.
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Claims 7
Claim · model-written summary
Progressive drought significantly reduced maize grain yield during either the vegetative or the reproductive stage.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential responses of maize yield”
e0“effects of progressive drought (PD)”
e1“grain yield was significantly reduced by PD during either vegetative or reproductive stage”
e2“were tested in the field, using a mobile rain shelter”
Claim · model-written summary
Reproductive-stage progressive drought reduced grain yield by 41.6-46.6%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential responses of maize yield”
e3“the reduction in grain yield from reproductive PD (41.6-46.6%) was greater than that from vegetative PD (18.6-26.2%)”
Claim · model-written summary
Vegetative-stage progressive drought reduced grain yield by 18.6-26.2%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential responses of maize yield”
e3“the reduction in grain yield from reproductive PD (41.6-46.6%) was greater than that from vegetative PD (18.6-26.2%)”
Claim · model-written summary
The grain yield reduction from reproductive-stage drought was greater than that from vegetative-stage drought.
- Treatment
- reproductive PDe3
- Outcome
- reduction in grain yielde3
- Direction
- greatere3
- Comparator
- vegetative PDe3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential responses of maize yield”
e3“the reduction in grain yield from reproductive PD (41.6-46.6%) was greater than that from vegetative PD (18.6-26.2%)”
Claim · model-written summary
The decrease in kernels per ear was associated with the decrease in grain yield (r2 = 0.88, P < 0.001).
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential responses of maize yield”
e4“The decrease in grain yield was largely caused by the decrease in kernels per ear (r2 = 0.88, P < 0.001)”
Claim · model-written summary
The decrease in kernels per ear largely caused the decrease in maize grain yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential responses of maize yield”
e4“The decrease in grain yield was largely caused by the decrease in kernels per ear (r2 = 0.88, P < 0.001)”
Claim · model-written summary
Guaranteeing water supply for maize during the reproductive stage is crucially important to avoid yield loss.
- Organ / stage
- reproductive stagee5
- Outcome
- guaranteeing water supply for maize during reproductive stagee5
- Qualifier
- to avoid the reduction in kernels per ear and grain yielde5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Differential responses of maize yield”
e5“guaranteeing water supply for maize during reproductive stage is crucially important to avoid the reduction in kernels per ear and grain yield”
The same questions in other papers
drought · yield · Zea mays (maize)Positive and negative results
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