Abstract
In this study, three nitrogen (N) fertilization rates (100, 200 and 300 kg ha -1 ) and three planting densities (6.75, 8.25 and 9.75 million plants ha -1 ) were explored for their effects on maize cellulose, hemicellulose and lignin contents including lignin synthesis enzyme activity.The results showed that with increasing N fertilization and planting density, the content of cellulose and hemicellulose in maize stalks increased, and the activity of the cinnamyl-alcohol dehydrogenase (CAD) improved which was beneficial to the synthesis of stem lignin.The N application rates and planting densities in each treatment increased IAA (auxin), GA (gibberellin) and CTK (cytokinin) endogenous hormone levels and decreased ABA (abscisic acid) levels.Correlation analysis showed that the cellulose content of stems was significantly negatively correlated with the lodging rate, indicating that the higher the cellulose content, the lower the lodging rate of stem.Under the N fertilizer and planting density treatments, there was a significant positive correlation between IAA, cellulose and hemicellulose contents and a significant positive correlation with lignin content, indicating that endogenous hormones promoted the quality of stem fibre.CTK and GA were significantly positively correlated with yield, indicating that endogenous hormone regulation affects maize yield.The maximum yield 9321.21 kg ha -1 was obtained with the combination of 8.25 million plants ha -1 and 200 kg nitrogen ha - 1 (D2N2).
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 9
Claim · model-written summary
Higher nitrogen and planting density increased maize stalk cellulose and hemicellulose.
- Treatment
- N fertilization and planting densitye0
- Outcome
- content of cellulose and hemicellulosee0
- Direction
- increasede0
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with increasing N fertilization and planting density, the content of cellulose and hemicellulose in maize stalks increased”
Claim · model-written summary
Higher nitrogen and planting density improved cinnamyl-alcohol dehydrogenase activity.
- Treatment
- Nitrogen Fertilization and Planting Densityt0
- Gene
- cinnamyl-alcohol dehydrogenase (CAD)e0
- Outcome
- activity of the cinnamyl-alcohol dehydrogenase (CAD)e0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the activity of the cinnamyl-alcohol dehydrogenase (CAD) improved”
t0“Nitrogen Fertilization and Planting Density Effects on the Physiological Characteristics of Stem, Root Bleeding Sap and Lodging Resistance in Spring Maize”
Claim · model-written summary
Nitrogen and density treatments increased IAA, GA, and CTK levels.
- Treatment
- N application rates and planting densitiese0
- Outcome
- IAA (auxin), GA (gibberellin) and CTK (cytokinin) endogenous hormone levelse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The N application rates and planting densities in each treatment increased IAA (auxin), GA (gibberellin) and CTK (cytokinin) endogenous hormone levels”
t0“Maize”
Claim · model-written summary
Nitrogen and density treatments decreased ABA levels.
- Treatment
- Nitrogen Fertilization and Planting Densityt0
- Outcome
- ABA (abscisic acid) levelse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased ABA (abscisic acid) levels”
t0“Nitrogen Fertilization and Planting Density Effects on the Physiological Characteristics of Stem, Root Bleeding Sap and Lodging Resistance in Spring Maize”
Claim · model-written summary
Stem cellulose content was significantly negatively correlated with lodging rate.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the cellulose content of stems was significantly negatively correlated with the lodging rate”
t0“Maize”
Claim · model-written summary
IAA was significantly positively correlated with cellulose and hemicellulose contents.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a significant positive correlation between IAA, cellulose and hemicellulose contents”
t0“Maize”
Claim · model-written summary
IAA was significantly positively correlated with lignin content.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was a significant positive correlation between IAA, cellulose and hemicellulose contents and a significant positive correlation with lignin content”
t0“Maize”
Claim · model-written summary
CTK and GA were significantly positively correlated with maize yield.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“CTK and GA were significantly positively correlated with yield”
t0“maize”
Claim · model-written summary
Maximum maize yield was 9321.21 kg ha -1 at 8.25 million plants ha -1 and 200 kg nitrogen ha - 1.
- Treatment
- 8.25 million plants ha -1 and 200 kg nitrogen ha - 1e0
- Outcome
- yielde0
- Direction
- maximume0
- Value
- 9321.21 kg ha -1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The maximum yield 9321.21 kg ha -1 was obtained with the combination of 8.25 million plants ha -1 and 200 kg nitrogen ha - 1 (D2N2)”
t0“Maize”
The same questions in other papers
nitrogen · physiology: hormones · Zea mays (maize)Positive and negative results
7 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
5 papers more in this group
See all 9 papers →density · molecular: metabolites · Zea mays (maize)Positive and negative results
5 papers in the same direction as this paper · 10 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- no effect
13 papers more in this group
See all 17 papers →fertilization · molecular: metabolites · Zea mays (maize)Positive and negative results
196 papers in the same direction as this paper · 47 in the opposite direction · 2 reporting no difference from an alternative
- negative
- no effect
- no effect
242 papers more in this group
See all 246 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.