Abstract
Water deficit is an important constraint of global production of soybean. Dry seed treatment with uniconazole powder is a simple low-cost technology. To test whether such technology could be used to increase tolerance to water deficits in soybean, the effects of uniconazole application on photosynthesis, leaf relative water content, chlorophyll fluorescence and seed yield were studied. Uniconazole at 0, 2, 4 and 8 mg/kg seed was applied before sowing. Four levels of soil moisture (75% field capacity for well-watered control and 60, 45 and 30% for drought-stressed treatment) were applied at blooming stage. Drought stress depressed leaf relative water content, chlorophyll content, net photosynthetic rate (Pn), stomatal conductance (Gs) and transpiration rate (Tr), while leaf relative water content, chlorophyll content, Pn, Gs and Tr of uniconazole-treated plants were higher than that of none uniconazole treated plants under the same soil moisture. Uniconazole treatment markedly increased maximum quantum yield of PS II (Fv/Fm) and photochemical quenching (qP) of drought-stressed plants. Treatment with uniconazole also significantly increased biomass accumulation, root/shoot ratio, the numbers of branch pod, branch seed and decreased empty pod of soybean when drought-stressed. This study shows that dry seed treatment with uniconazole can be used as a plant growth regulator technology to enhance drought tolerance and minimize the yield loss of soybean caused by water deficits.
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Claims 7
Claim · model-written summary
Drought stress depressed soybean leaf water content, chlorophyll content, and gas exchange.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Drought stresse0
- Outcome
- leaf relative water content, chlorophyll content, net photosynthetic rate (Pn)e0
- Direction
- depressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Drought stress depressed leaf relative water content, chlorophyll content, net photosynthetic rate (Pn), stomatal conductance (Gs) and transpiration rate (Tr)”
t0“soybean”
Claim · model-written summary
Uniconazole-treated soybean had higher leaf water content, chlorophyll content, and gas exchange under the same soil moisture.
- Taxon
- soybeanGlycine maxt0
- Treatment
- uniconazole-treatede0
- Outcome
- leaf relative water content, chlorophyll content, Pne0
- Direction
- highere0
- Comparator
- none uniconazole treated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf relative water content, chlorophyll content, Pn, Gs and Tr of uniconazole-treated plants were higher than that of none uniconazole treated plants under the same soil moisture”
t0“soybean”
Claim · model-written summary
Uniconazole increased maximum quantum yield of PS II and photochemical quenching in drought-stressed soybean.
- Taxon
- soybeanGlycine maxt0
- Treatment
- Uniconazole treatmente0
- Outcome
- maximum quantum yield of PS II (Fv/Fm) and photochemical quenching (qP)e0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Uniconazole treatment markedly increased maximum quantum yield of PS II (Fv/Fm) and photochemical quenching (qP) of drought-stressed plants”
t0“soybean”
Claim · model-written summary
Uniconazole increased biomass accumulation, root/shoot ratio, and branch pod number in drought-stressed soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- uniconazolee0
- Outcome
- biomass accumulation, root/shoot ratio, the numbers of branch pode0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with uniconazole also significantly increased biomass accumulation, root/shoot ratio, the numbers of branch pod, branch seed and decreased empty pod of soybean when drought-stressed”
Claim · model-written summary
Uniconazole increased branch seed number in drought-stressed soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- uniconazolee0
- Outcome
- branch seede0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with uniconazole also significantly increased biomass accumulation, root/shoot ratio, the numbers of branch pod, branch seed and decreased empty pod of soybean when drought-stressed”
Claim · model-written summary
Uniconazole decreased empty pods in drought-stressed soybean.
- Taxon
- soybeanGlycine maxe0
- Treatment
- uniconazolee0
- Outcome
- empty pode0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Treatment with uniconazole also significantly increased biomass accumulation, root/shoot ratio, the numbers of branch pod, branch seed and decreased empty pod of soybean when drought-stressed”
Claim · model-written summary
The authors recommend dry seed treatment with uniconazole to enhance soybean drought tolerance and minimize yield loss.
- Taxon
- soybeanGlycine maxe0
- Treatment
- dry seed treatment with uniconazolee0
- Outcome
- enhance drought tolerance and minimize the yield losse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“dry seed treatment with uniconazole can be used as a plant growth regulator technology to enhance drought tolerance and minimize the yield loss of soybean caused by water deficits”
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See all 93 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.