Abstract
The relay strip intercropping system of wheat-corn-soybean is widely used in southwest China. However, it is hard to produce soybean stably with this system, since the growth of soybean plants is slower under shading by corn at the seedling stage, and it is compensated by accelerated growth after the symbiotic stage. Soybean plants show excessive vegetative growth due to more rain during the flowering stage, which results in fallen petals, fallen pods and lower yield. This study investigated whether seed treatment with uniconazole powder (0, 2, 4 and 8 mg kg–1 seed) suppresses excessive vegetative growth of soybean plants during the flowering stage and delays senescence of photosynthetically active leaves at the pod-setting stage. If such events are correlated with changes in photosynthesis, they may affect dry matter accumulation and seed yield in the relay stripping system. Uniconazole promoted biomass accumulation from 31 (R3) to 61 (R5) days after flowering (DAF) and seed yield. Seed treatment with uniconazole raised the net photosynthetic rate, stomatal conductance, transpiration rate, and total chlorophyll and chlorophyll a contents. In contrast, uniconazole reduced leaf area index (LAI) from 1 DAF (R1) to 46 DAF (R4) with the increase in uniconazole concentration, whereas, uniconazole significantly increased LAI at 61 DAF, and the greatest promotion occurred at 2 mg kg–1 treatment. The study clearly showed that uniconazole effectively suppressed excessive vegetative growth of soybean during flowering stage, delayed senescence of photosynthetically active leaves at pod-setting stage and induced higher yield, which were related to the changes in photosynthetic rate, chlorophyll content, dry matter accumulation and LAI in the relay strip intercropping system.
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Claims 9
Claim · model-written summary
Uniconazole increased soybean biomass accumulation from 31 to 61 days after flowering.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Uniconazolee0
- Outcome
- biomass accumulatione0
- Direction
- promotede0
- Qualifier
- from 31 (R3) to 61 (R5) days after flowering (DAF)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uniconazole promoted biomass accumulation from 31 (R3) to 61 (R5) days after flowering (DAF) and seed yield.”
t0“Soybean”
Claim · model-written summary
Uniconazole increased soybean seed yield.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Uniconazolee0
- Outcome
- seed yielde0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uniconazole promoted biomass accumulation from 31 (R3) to 61 (R5) days after flowering (DAF) and seed yield.”
t0“Soybean”
Claim · model-written summary
Uniconazole seed treatment raised net photosynthetic rate, stomatal conductance, and transpiration rate.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Seed treatment with uniconazolee0
- Outcome
- net photosynthetic rate, stomatal conductance, transpiration ratee0
- Direction
- raisede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed treatment with uniconazole raised the net photosynthetic rate, stomatal conductance, transpiration rate, and total chlorophyll and chlorophyll a contents.”
t0“Soybean”
Claim · model-written summary
Uniconazole seed treatment raised total chlorophyll and chlorophyll a contents.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Seed treatment with uniconazolee0
- Outcome
- total chlorophyll and chlorophyll a contentse0
- Direction
- raisede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seed treatment with uniconazole raised the net photosynthetic rate, stomatal conductance, transpiration rate, and total chlorophyll and chlorophyll a contents.”
t0“Soybean”
Claim · model-written summary
Increasing uniconazole concentration reduced soybean LAI from 1 to 46 days after flowering.
- Taxon
- soybeanGlycine maxt0
- Treatment
- uniconazolee0
- Outcome
- leaf area index (LAI)e0
- Direction
- reducede0
- Qualifier
- from 1 DAF (R1) to 46 DAF (R4)e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uniconazole reduced leaf area index (LAI) from 1 DAF (R1) to 46 DAF (R4) with the increase in uniconazole concentration”
t0“Soybean”
Claim · model-written summary
Uniconazole significantly increased LAI at 61 days after flowering.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uniconazole significantly increased LAI at 61 DAF, and the greatest promotion occurred at 2 mg kg–1 treatment.”
t0“Soybean”
Claim · model-written summary
The 2 mg kg–1 uniconazole treatment gave the greatest LAI promotion at 61 days after flowering.
- Taxon
- soybeanGlycine maxt0
- Treatment
- 2 mg kg–1 treatmente0
- Outcome
- LAIe0
- Direction
- greatest promotione0
- Qualifier
- 61 DAFe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uniconazole significantly increased LAI at 61 DAF, and the greatest promotion occurred at 2 mg kg–1 treatment.”
t0“Soybean”
Claim · model-written summary
Uniconazole suppressed excessive vegetative growth during flowering.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- flowering stagee0
- Treatment
- uniconazolee0
- Outcome
- excessive vegetative growth of soybeane0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uniconazole effectively suppressed excessive vegetative growth of soybean during flowering stage, delayed senescence of photosynthetically active leaves at pod-setting stage and induced higher yield”
Claim · model-written summary
Uniconazole delayed senescence of photosynthetically active leaves at pod setting.
- Taxon
- soybeanGlycine maxe0
- Organ / stage
- pod-setting stagee0
- Treatment
- uniconazolee0
- Outcome
- senescence of photosynthetically active leavese0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“uniconazole effectively suppressed excessive vegetative growth of soybean during flowering stage, delayed senescence of photosynthetically active leaves at pod-setting stage and induced higher yield”
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See all 12 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.