Abstract
Direct-seeded rice has been widely adopted in Asia in recent years. However, its low and unstable yields severely limit the increase in rice production and directly affect food security. The aim of this research was to investigate the effects of different concentrations of paclobutrazol seed soaking on the biomass production and yield formation of direct-seeded rice and to find the optimal concentrations to provide a theoretical basis for the high-yielding cultivation of direct-seeded rice. Two rice varieties, Jiyujing and Jijing305, were used in this experiment, and the seeds were soaked in paclobutrazol at concentrations of 0, 50, 100, 150, and 200 mg L−1. The appropriate concentration of paclobutrazol seed soaking increased the yield of direct-seeded rice; this was attributed to the increase in the spikelet per unit area and the seed setting rate. However, the too-high paclobutrazol concentration was not conducive to a yield increase. Regression analysis showed that the appropriate concentration of paclobutrazol seed soaking was 100–105 mg L−1. The appropriate concentration of paclobutrazol for seed soaking ensured the seedling emergence rate; improved the seedling quality, stem tillers, and productive tillers; increased the efficient leaf area, chlorophyll content, and net photosynthetic rate, resulting in an increase in dry matter accumulation; coordinated the source-sink relationship and dry matter distribution; and promoted the material translocation from the “source” to the “sink”. In conclusion, using the appropriate concentration of paclobutrazol for seed soaking is an effective means of obtaining high yields of direct-seeded rice.
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
Appropriate paclobutrazol seed soaking increased direct-seeded rice yield.
- Taxon
- rice
Oryza sativae0 - Treatment
- paclobutrazol seed soakinge0
- Outcome
- yielde0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The appropriate concentration of paclobutrazol seed soaking increased the yield of direct-seeded rice”
Claim · model-written summary
Appropriate soaking increased spikelets per unit area.
- Taxon
- RiceOryza sativat0
- Outcome
- spikelet per unit areae0
- Direction
- increasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“increase in the spikelet per unit area and the seed setting rate”
Claim · model-written summary
Appropriate soaking increased seed setting rate.
- Taxon
- RiceOryza sativat0
- Outcome
- seed setting ratee0
- Direction
- increasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“increase in the spikelet per unit area and the seed setting rate”
Claim · model-written summary
Excessively high paclobutrazol concentration was unfavorable for yield increase.
- Taxon
- RiceOryza sativat0
- Treatment
- too-high paclobutrazol concentratione0
- Outcome
- yielde0
- Direction
- not conducivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“the too-high paclobutrazol concentration was not conducive to a yield increase”
Claim · model-written summary
Regression identified 100–105 mg L−1 as the appropriate seed soaking concentration.
- Taxon
- RiceOryza sativat0
- Outcome
- appropriate concentration of paclobutrazol seed soakinge0
- Value
- 100–105 mg L−1e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“Regression analysis showed that the appropriate concentration of paclobutrazol seed soaking was 100–105 mg L−1”
Claim · model-written summary
Appropriate paclobutrazol seed soaking ensured seedling emergence rate.
- Taxon
- RiceOryza sativat0
- Treatment
- appropriate concentration of paclobutrazol for seed soakinge0
- Outcome
- seedling emergence ratee0
- Direction
- ensurede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“The appropriate concentration of paclobutrazol for seed soaking ensured the seedling emergence rate”
Claim · model-written summary
Appropriate soaking improved seedling quality, stem tillers, and productive tillers.
- Taxon
- RiceOryza sativat0
- Outcome
- seedling quality, stem tillers, and productive tillerse0
- Direction
- improvede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“improved the seedling quality, stem tillers, and productive tillers”
Claim · model-written summary
Appropriate soaking increased efficient leaf area, chlorophyll content, and net photosynthetic rate.
- Taxon
- RiceOryza sativat0
- Outcome
- efficient leaf area, chlorophyll content, and net photosynthetic ratee0
- Direction
- increasede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“increased the efficient leaf area, chlorophyll content, and net photosynthetic rate”
Claim · model-written summary
Appropriate soaking increased dry matter accumulation.
- Taxon
- RiceOryza sativat0
- Outcome
- dry matter accumulatione0
- Direction
- increasee0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“resulting in an increase in dry matter accumulation”
Claim · model-written summary
Appropriate soaking coordinated source-sink relations and dry matter distribution.
- Taxon
- RiceOryza sativat0
- Outcome
- source-sink relationship and dry matter distributione0
- Direction
- coordinatede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“coordinated the source-sink relationship and dry matter distribution”
Claim · model-written summary
Appropriate soaking promoted material translocation from source to sink.
- Taxon
- RiceOryza sativat0
- Outcome
- material translocation from the “source” to the “sink”e0
- Direction
- promotede0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Rice”
e0“promoted the material translocation from the “source” to the “sink””
Claim · model-written summary
Authors recommend appropriate paclobutrazol seed soaking for high direct-seeded rice yields.
- Taxon
- riceOryza sativae0
- Outcome
- using the appropriate concentration of paclobutrazol for seed soakinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“using the appropriate concentration of paclobutrazol for seed soaking is an effective means of obtaining high yields of direct-seeded rice”
The same questions in other papers
paclobutrazol · yield · Oryza sativa (rice)Results differ
22 papers in the same direction as this paper · 5 in the opposite direction
- negative
- positive
- positive
24 papers more in this group
See all 28 papers →paclobutrazol · growth · Oryza sativa (rice)Results differ
23 papers in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
25 papers more in this group
See all 29 papers →seed treatment · yield · Oryza sativa (rice)Positive and negative results
158 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative
- no effect
- no effect
- no effect
162 papers more in this group
See all 166 papers →seed treatment · growth · Oryza sativa (rice)Positive and negative results
229 papers in the same direction as this paper · 15 in the opposite direction
- negative
- no effect
- negative
241 papers more in this group
See all 245 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.