Abstract
Extreme rainfall events during the summer maize growth and development periods, which have induced losses in summer maize production. There was a completely randomized block experiment being designed with four treatments: waterlogging for 6 days at the V3 stage (C-W), H 2 O 2 -priming + non-waterlogging (H-CK), H 2 O 2 -priming + waterlogging for 6 days at the V3 stage (H-W) and control (C-CK). This study investigated the effects of H 2 O 2 priming on yield and photosynthetic parameters of ( Zea mays . L) summer maize hybrid DengHai605 (DH605) by measuring the leaf area index (LAI), soil and plant analyzer development (SPAD) value, stomatal morphology, gas exchange parameters, and chlorophyll fluorescence parameters. The results showed that the net photosynthetic rate (Pn) was decreased after waterlogging through the stomatal limitation of CO 2 supply and reduction of PSII photochemical efficiency, which led to the decrease in dry matter accumulation and grain yield. H 2 O 2 priming increased the number of opening stomas, the stomatal length, and width, thus increasing Ci by 12.1%, which enhanced the Pn by 37.5%. Additionally, H 2 O 2 priming could improve the energy of dark reaction carbohydrates by increasing the light energy absorption and utilization, alleviating the function of PSII reaction centers, protecting the PSII receptor and donor side, and the electron transport chain. The φEo, φPo, φRo, and Ψo of H-W were increased by 89.9%, 16.2%, 55.4%, and 63.9% respectively, and the φDo was decreased by 23.5%, compared with C-W. Therefore, H 2 O 2 priming significantly enhanced the PSII photochemical efficiency, and increased the CO 2 supply in dark reactions to promote carbon assimilation, alleviating the waterlogging-induced damage to maize plant growth and grain yield.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 12
Claim · model-written summary
Waterlogging decreased maize net photosynthetic rate.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that the net photosynthetic rate (Pn) was decreased after waterlogging through the stomatal limitation of CO 2 supply and reduction of PSII photochemical efficiency”
e1“( Zea mays . L) summer maize”
Claim · model-written summary
Waterlogging decreased maize dry matter accumulation and grain yield.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which led to the decrease in dry matter accumulation and grain yield.”
e1“( Zea mays . L) summer maize”
e2“after waterlogging”
Claim · model-written summary
Hydrogen peroxide priming increased opening stomata, stomatal length and width.
- Treatment
- H 2 O 2 priminge0
- Outcome
- number of opening stomas, the stomatal length, and widthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H 2 O 2 priming increased the number of opening stomas, the stomatal length, and width”
e1“( Zea mays . L) summer maize”
Claim · model-written summary
Hydrogen peroxide priming increased Ci by 12.1%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“thus increasing Ci by 12.1%”
e1“H 2 O 2 priming increased the number of opening stomas”
e2“( Zea mays . L) summer maize”
Claim · model-written summary
Hydrogen peroxide priming enhanced Pn by 37.5%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“which enhanced the Pn by 37.5%”
e1“H 2 O 2 priming increased the number of opening stomas”
e2“( Zea mays . L) summer maize”
Claim · model-written summary
Priming increased light energy absorption and use, supporting dark reaction carbohydrates and alleviating PSII damage.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H 2 O 2 priming could improve the energy of dark reaction carbohydrates by increasing the light energy absorption and utilization, alleviating the function of PSII reaction centers, protecting the PSII receptor and donor side, and the electron transport chain.”
e1“( Zea mays . L) summer maize”
Claim · model-written summary
Priming under waterlogging increased φEo by 89.9% versus waterlogging alone.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The φEo, φPo, φRo, and Ψo of H-W were increased by 89.9%, 16.2%, 55.4%, and 63.9% respectively, and the φDo was decreased by 23.5%, compared with C-W.”
e1“( Zea mays . L) summer maize”
Claim · model-written summary
Priming under waterlogging increased φPo by 16.2% versus waterlogging alone.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The φEo, φPo, φRo, and Ψo of H-W were increased by 89.9%, 16.2%, 55.4%, and 63.9% respectively, and the φDo was decreased by 23.5%, compared with C-W.”
e1“( Zea mays . L) summer maize”
Claim · model-written summary
Priming under waterlogging increased φRo by 55.4% versus waterlogging alone.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The φEo, φPo, φRo, and Ψo of H-W were increased by 89.9%, 16.2%, 55.4%, and 63.9% respectively, and the φDo was decreased by 23.5%, compared with C-W.”
e1“( Zea mays . L) summer maize”
Claim · model-written summary
Priming under waterlogging increased Ψo by 63.9% versus waterlogging alone.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The φEo, φPo, φRo, and Ψo of H-W were increased by 89.9%, 16.2%, 55.4%, and 63.9% respectively, and the φDo was decreased by 23.5%, compared with C-W.”
e1“( Zea mays . L) summer maize”
Claim · model-written summary
Priming under waterlogging decreased φDo by 23.5% versus waterlogging alone.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The φEo, φPo, φRo, and Ψo of H-W were increased by 89.9%, 16.2%, 55.4%, and 63.9% respectively, and the φDo was decreased by 23.5%, compared with C-W.”
e1“( Zea mays . L) summer maize”
Claim · model-written summary
Priming significantly enhanced PSII photochemical efficiency and carbon assimilation, alleviating waterlogging damage to growth and grain yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“H 2 O 2 priming significantly enhanced the PSII photochemical efficiency, and increased the CO 2 supply in dark reactions to promote carbon assimilation, alleviating the waterlogging-induced damage to maize plant growth and grain yield.”
The same questions in other papers
hydrogen peroxide · physiology: photosynthesis · Zea mays (maize)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
hydrogen peroxide · physiology: gas exchange · Zea mays (maize)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- negative
- positive
flooding · physiology: photosynthesis · Zea mays (maize)Results differ
12 papers in the same direction as this paper · 2 in the opposite direction
- positive
- positive
- negative
11 papers more in this group
See all 15 papers →seed treatment · physiology: gas exchange · Zea mays (maize)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 papers →seed treatment · physiology: photosynthesis · Zea mays (maize)Positive and negative results
16 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
14 papers more in this group
See all 18 papers →flooding · yield · Zea mays (maize)Positive and negative results
49 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- negative
52 papers more in this group
See all 56 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.