Abstract
Rice (Oryza sativa L.) is the most important food crop worldwide, and its sustainable development is essential to ensure global food security. Panicle morphological and physiological characteristics plays an important role in rice yield formation. However, under different nitrogen (N) fertilization strategies, it is not clear whether the morphological and physiological state of panicles at panicle development stage affects the formation of yield. To understand how the panicle differentiation and development, and grain yield are affected by the N fertilization strategies, and clarify the relationship between related traits and yield in the process of panicle development in different cultivars. In this study consisted of no N fertilizer and four N fertilization strategies, a panicle weight type (PWT) rice cultivar, Dongfu 114 (DF114) and a panicle number type (PNT) rice cultivar, Longdao 11 (LD11) were grown in the field. The results showed that N fertilization strategies could improve the nitrogen use efficiency and yield of rice, but the response of different rice varieties to N fertilizer strategies was different. Different from the DF114, the further increase of panicle N fertilizer ratio could not further improve the yield of LD11, and the highest grain yield of DF114 and LD11 was obtained under N4 and N3 conditions, respectively. In addition, this study found that N fertilizer strategies can affect the content of phytohormones in rice at the panicle differentiation stage, and then regulate the differentiation and development of rice panicles to affect yield. It is of great significance to optimize the application mode of N fertilizer according to the characteristics of varieties to improve rice yield and ensure food security.
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Claims 7
Claim · model-written summary
N fertilization strategies could improve nitrogen use efficiency and yield of rice compared with no N fertilizer.
- Taxon
- rice
Oryza sativat0 - Treatment
- N fertilization strategiese1
- Outcome
- nitrogen use efficiency and yielde1
- Direction
- improvee1
- Comparator
- no N fertilizere2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice cultivars”
e1“The results showed that N fertilization strategies could improve the nitrogen use efficiency and yield of rice”
e2“consisted of no N fertilizer and four N fertilization strategies”
Claim · model-written summary
Dongfu 114 had its highest grain yield under N4.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice cultivars”
e3“the highest grain yield of DF114 and LD11 was obtained under N4 and N3 conditions, respectively”
Claim · model-written summary
Longdao 11 had its highest grain yield under N3.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice cultivars”
e3“the highest grain yield of DF114 and LD11 was obtained under N4 and N3 conditions, respectively”
Claim · model-written summary
A further increase of panicle N fertilizer ratio could not further improve the yield of Longdao 11.
- Taxon
- riceOryza sativat0
- Material
- LD11e4
- Treatment
- the further increase of panicle N fertilizer ratioe4
- Outcome
- yielde4
- Direction
- could not further improvee4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice cultivars”
e4“Different from the DF114, the further increase of panicle N fertilizer ratio could not further improve the yield of LD11”
Claim · model-written summary
N fertilizer strategies affect the content of phytohormones in rice at the panicle differentiation stage.
- Taxon
- riceOryza sativat0
- Organ / stage
- panicle differentiation stagee5
- Treatment
- N fertilizer strategiese5
- Outcome
- content of phytohormonese5
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice cultivars”
e5“N fertilizer strategies can affect the content of phytohormones in rice at the panicle differentiation stage”
Claim · model-written summary
Phytohormones regulate panicle differentiation and development, affecting rice yield.
- Taxon
- riceOryza sativat0
- Compound
- phytohormonese5
- Outcome
- yielde6
- Qualifier
- differentiation and development of rice paniclese6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice cultivars”
e5“N fertilizer strategies can affect the content of phytohormones in rice at the panicle differentiation stage”
e6“and then regulate the differentiation and development of rice panicles to affect yield”
Claim · model-written summary
Optimizing the application mode of N fertilizer according to variety characteristics is recommended to improve rice yield.
- Taxon
- riceOryza sativat0
- Outcome
- optimize the application mode of N fertilizere7
- Qualifier
- according to the characteristics of varietiese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“rice cultivars”
e7“It is of great significance to optimize the application mode of N fertilizer according to the characteristics of varieties to improve rice yield and ensure food security”
The same questions in other papers
fertilization · yield · Oryza sativa (rice)Positive and negative results
3,182 papers in the same direction as this paper · 207 in the opposite direction · 65 reporting no difference from an alternative
- no effect
- positive
- positive
3,451 papers more in this group
See all 3,455 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.