Abstract
ABSTRACT Harvest delay may affect the physiological quality of soybean seeds due to the occurrence of unfavorable environmental conditions in the field. This study was conducted to investigate the physiological and enzymatic changes in soybean seeds submitted to harvest delay. A randomized block design, with eight seed harvest periods (0; 5; 10; 15; 20; 25; 30; and 35 days after the R8 phenological stage - full maturity) of the BRS 820 RR® cultivar, with four replicates, was used. At each harvest period, the moisture content, 1,000-seed weight, germination, seedling emergence, emergence speed index, accelerated aging, vigor and viability (tetrazolium test), electrical conductivity, enzymatic expression and seed yield were measured. Harvest delay up to 35 days after the R8 phenological stage do not affect the 1,000-seed weight and seed yield. The delayed harvest from the R8 stage results in increased damage by stink bugs and moisture. The harvest delay of seeds from the 10th day after the R8 stage impairs the seed vigor and, from the 15th day, seed germination. Seeds harvested with a delay after the R8 stage have lower expressions of the following isoenzymatic systems: malate dehydrogenase, alcohol dehydrogenase, esterase, isocitrate lyase and superoxide dismutase, especially after 15 days of harvest delay.
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Claims 7
Claim · model-written summary
Harvest delay up to 35 days did not affect 1,000-seed weight or seed yield.
- Taxon
- soybean
Glycine maxt0 - Treatment
- Harvest delay up to 35 days after the R8 phenological stagee0
- Outcome
- 1,000-seed weight and seed yielde0
- Direction
- do not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“Harvest delay up to 35 days after the R8 phenological stage do not affect the 1,000-seed weight and seed yield”
Claim · model-written summary
Harvest delay increased stink bug damage.
- Taxon
- soybeanGlycine maxt0
- Treatment
- delayed harvest from the R8 stagee0
- Interactor
- stink bugsPentatomidaee0pest
- Outcome
- damage by stink bugse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“The delayed harvest from the R8 stage results in increased damage by stink bugs and moisture”
Claim · model-written summary
Harvest delay increased moisture damage.
- Taxon
- soybeanGlycine maxt0
- Treatment
- delayed harvest from the R8 stagee0
- Outcome
- damage by stink bugs and moisturee0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“The delayed harvest from the R8 stage results in increased damage by stink bugs and moisture”
Claim · model-written summary
Harvest delay from day 10 after R8 impaired seed vigor.
- Taxon
- soybeanGlycine maxt0
- Treatment
- harvest delay of seeds from the 10th day after the R8 stagee0
- Outcome
- seed vigore0
- Direction
- impairse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“The harvest delay of seeds from the 10th day after the R8 stage impairs the seed vigor”
Claim · model-written summary
Harvest delay from day 15 after R8 impaired germination.
- Taxon
- soybeanGlycine maxt0
- Treatment
- from the 15th daye0
- Outcome
- seed germinatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“from the 15th day, seed germination”
e1“impairs the seed vigor and, from the 15th day, seed germination”
Claim · model-written summary
Delayed harvest lowered expression of malate dehydrogenase, alcohol dehydrogenase and esterase isoenzymes.
- Taxon
- soybeanGlycine maxt0
- Treatment
- harvested with a delay after the R8 stagee0
- Outcome
- expressions of the following isoenzymatic systems: malate dehydrogenase, alcohol dehydrogenase, esterasee0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“Seeds harvested with a delay after the R8 stage have lower expressions of the following isoenzymatic systems: malate dehydrogenase, alcohol dehydrogenase, esterase, isocitrate lyase and superoxide dismutase, especially after 15 days of harvest delay”
Claim · model-written summary
Delayed harvest lowered expression of isocitrate lyase and superoxide dismutase isoenzymes.
- Taxon
- soybeanGlycine maxt0
- Treatment
- harvested with a delay after the R8 stagee0
- Outcome
- isocitrate lyase and superoxide dismutasee0
- Direction
- lowere0
- Qualifier
- especially after 15 days of harvest delaye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“soybean”
e0“Seeds harvested with a delay after the R8 stage have lower expressions of the following isoenzymatic systems: malate dehydrogenase, alcohol dehydrogenase, esterase, isocitrate lyase and superoxide dismutase, especially after 15 days of harvest delay”
The same questions in other papers
stage · pest · Glycine max (soybean)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- positive
- negative
- no effect
stage · Pentatomidae · Glycine max (soybean)Results agree
1 paper in the same direction as this paper
- negative
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.