Abstract
A pot experiment was conducted to investigate the effects of high temperature and humidity stress [(40 +/- 2) degrees C/(30 +/- 2) degrees C, RH (95 +/- 5)%/(70 +/- 5)%, 10 h/14 h (day/night)] at the physiological maturity stage of two spring soybean cultivars (Xiangdou No. 3 and Ningzhen No. 1) on seed vigor indices, main nutritional components and coat anatomical structure. High temperature and humidity stress were found to cause the decrease of seed viability, germination potential, and germination percentage as well as the dehydrogenase and acid phosphatase activities, but increased the seed cell membrane permeability as well as H+, soluble sugar and leucine levels in the seed soaking liquid of each cultivar. Moreover, the stress led to irregular changes of seed oil and protein contents and alteration of anatomical structure of episperm and hilum in the two cultivars. A shortterm stress (less than 5 h) had no significant impact on seed vigor, but a long-term one (more than 48 h) caused rapid decrease of seed vigor indices. Xiangdou No. 3 showed less decreases in seed germination potential and enzyme activities, and less increase in extravasation content in the seed soaking liquid, had compact seed coat and intact hilum, suggesting it was more resistant to high temperature and humidity stress.
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Claims 10
Claim · model-written summary
Stress decreased soybean seed viability, germination potential and germination percentage.
- Taxon
- spring soybean
Glycine maxt0 - Treatment
- High temperature and humidity stresse0
- Outcome
- seed viability, germination potential, and germination percentagee0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring soybean”
e0“High temperature and humidity stress were found to cause the decrease of seed viability, germination potential, and germination percentage”
Claim · model-written summary
Stress decreased seed dehydrogenase and acid phosphatase activities.
- Taxon
- spring soybeanGlycine maxt0
- Treatment
- High temperature and humidity stresse1
- Outcome
- dehydrogenase and acid phosphatase activitiese0
- Direction
- decreasee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring soybean”
e0“the dehydrogenase and acid phosphatase activities”
e1“High temperature and humidity stress were found to cause the decrease”
Claim · model-written summary
Stress increased seed membrane permeability and H+, soluble sugar and leucine in soaking liquid.
- Taxon
- spring soybeanGlycine maxt0
- Treatment
- High temperature and humidity stresse1
- Outcome
- seed cell membrane permeability as well as H+, soluble sugar and leucine levels in the seed soaking liquide0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring soybean”
e0“but increased the seed cell membrane permeability as well as H+, soluble sugar and leucine levels in the seed soaking liquid”
e1“High temperature and humidity stress”
Claim · model-written summary
Stress changed seed oil and protein contents irregularly.
- Taxon
- spring soybeanGlycine maxt0
- Treatment
- the stresse0
- Outcome
- seed oil and protein contentse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring soybean”
e0“the stress led to irregular changes of seed oil and protein contents”
Claim · model-written summary
Stress altered episperm and hilum anatomy.
- Taxon
- spring soybeanGlycine maxt0
- Treatment
- the stresse1
- Outcome
- alteration of anatomical structure of episperm and hilume0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring soybean”
e0“alteration of anatomical structure of episperm and hilum in the two cultivars”
e1“the stress led to”
Claim · model-written summary
Stress shorter than 5 h had no significant impact on seed vigor.
- Taxon
- spring soybeanGlycine maxt0
- Treatment
- A shortterm stress (less than 5 h)e0
- Outcome
- seed vigore0
- Direction
- no significant impacte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring soybean”
e0“A shortterm stress (less than 5 h) had no significant impact on seed vigor”
Claim · model-written summary
Stress longer than 48 h rapidly decreased seed vigor indices.
- Taxon
- spring soybeanGlycine maxt0
- Treatment
- a long-term one (more than 48 h)e0
- Outcome
- seed vigor indicese0
- Direction
- decreasee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring soybean”
e0“a long-term one (more than 48 h) caused rapid decrease of seed vigor indices”
Claim · model-written summary
Xiangdou No. 3 had smaller decreases in germination potential and enzyme activities than Ningzhen No. 1.
- Taxon
- spring soybeanGlycine maxt0
- Material
- Xiangdou No. 3e0
- Outcome
- seed germination potential and enzyme activitiese0
- Direction
- less decreasese0
- Comparator
- Ningzhen No. 1e1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring soybean”
e0“Xiangdou No. 3 showed less decreases in seed germination potential and enzyme activities”
e1“two spring soybean cultivars (Xiangdou No. 3 and Ningzhen No. 1)”
Claim · model-written summary
Xiangdou No. 3 showed a smaller increase in seed soaking liquid extravasation.
- Taxon
- spring soybeanGlycine maxt0
- Material
- Xiangdou No. 3e1
- Outcome
- extravasation content in the seed soaking liquide0
- Direction
- less increasee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring soybean”
e0“less increase in extravasation content in the seed soaking liquid”
e1“Xiangdou No. 3 showed”
Claim · model-written summary
Xiangdou No. 3 retained a compact seed coat and intact hilum.
- Taxon
- spring soybeanGlycine maxt0
- Material
- Xiangdou No. 3e0
- Outcome
- compact seed coat and intact hilume1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“spring soybean”
e0“Xiangdou No. 3 showed”
e1“had compact seed coat and intact hilum”
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