Abstract
Abstract Salt stress reduces grain yield of maize ( Zea mays L.) due to poor kernel setting but not due to decreased grain filling. In the present study, it was tested whether acid invertase activity is decreased in developing kernels of maize under salt stress, and if assimilate supply is limited. The relatively salt‐sensitive maize hybrid Pioneer 3906 was compared with the more salt‐resistant hybrid SR 12. Salt stress caused a significant decrease in grain yield which was due to a 50% decrease in kernel number. No source limitation was observed, as the sucrose concentrations in kernels were significantly increased under salt stress for both genotypes. In contrast, glucose and fructose concentrations in kernels were significantly decreased. Salt stress caused a significant inhibition of soluble acid invertase activity to 19% in hydroponics 5 d after pollination (5 DAP) and to 50% in the soil culture experiment (2 DAP). The decrease in enzyme activity was the same for both genotypes. In the soil experiment, the highest soluble acid invertase activity was found 2 DAP with a steep decline until 8 DAP in Pioneer 3906. It is concluded that a decrease in acid invertase activity is a key factor associated with limited kernel setting under salt stress but additional factors may be responsible for genotypic differences.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 10
Claim · model-written summary
Salt stress significantly reduced maize grain yield.
Zea maysNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress caused a significant decrease in grain yield which was due to a 50% decrease in kernel number.”
t0“maize”
Claim · model-written summary
Salt stress reduced kernel number by 50%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress caused a significant decrease in grain yield which was due to a 50% decrease in kernel number.”
t0“maize”
Claim · model-written summary
No assimilate source limitation was observed under salt stress.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No source limitation was observed, as the sucrose concentrations in kernels were significantly increased under salt stress for both genotypes.”
t0“maize”
Claim · model-written summary
Salt stress significantly increased kernel sucrose concentrations in both genotypes.
- Organ / stage
- kernelse0
- Treatment
- salt stresse0
- Outcome
- sucrose concentrationse0
- Direction
- increasede0
- Qualifier
- both genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the sucrose concentrations in kernels were significantly increased under salt stress for both genotypes.”
t0“maize”
Claim · model-written summary
Salt stress significantly decreased kernel glucose and fructose concentrations.
- Organ / stage
- kernelse0
- Treatment
- salt stresse1
- Outcome
- glucose and fructose concentrationse0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In contrast, glucose and fructose concentrations in kernels were significantly decreased.”
e1“under salt stress for both genotypes.”
t0“maize”
Claim · model-written summary
Salt stress significantly inhibited soluble acid invertase activity to 19% in hydroponics five days after pollination.
- Organ / stage
- 5 d after pollinatione0
- Treatment
- Salt stresse0
- Gene
- soluble acid invertasee0
- Outcome
- soluble acid invertase activitye0
- Direction
- inhibitione0
- Value
- 19%e0
- Setting
- hydroponicse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress caused a significant inhibition of soluble acid invertase activity to 19% in hydroponics 5 d after pollination (5 DAP)”
t0“maize”
Claim · model-written summary
Salt stress significantly inhibited soluble acid invertase activity to 50% in soil culture two days after pollination.
- Organ / stage
- 2 DAPe0
- Treatment
- Salt stresse0
- Outcome
- soluble acid invertase activitye0
- Direction
- inhibitione0
- Value
- 50%e0
- Setting
- soil culture experimente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Salt stress caused a significant inhibition of soluble acid invertase activity to 19% in hydroponics 5 d after pollination (5 DAP) and to 50% in the soil culture experiment (2 DAP).”
t0“maize”
Claim · model-written summary
The decrease in enzyme activity was equal in both genotypes.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The decrease in enzyme activity was the same for both genotypes.”
t0“maize”
Claim · model-written summary
Pioneer 3906 had its highest soluble acid invertase activity at 2 DAP in soil, followed by a steep decline to 8 DAP.
- Material
- Pioneer 3906e0
- Outcome
- soluble acid invertase activitye0
- Direction
- higheste0
- Qualifier
- 2 DAP with a steep decline until 8 DAPe0
- Setting
- soil experimente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the soil experiment, the highest soluble acid invertase activity was found 2 DAP with a steep decline until 8 DAP in Pioneer 3906.”
t0“maize”
Claim · model-written summary
Decreased acid invertase activity is interpreted as a key factor limiting kernel setting under salt stress, with additional factors potentially explaining genotype differences.
- Treatment
- salt stresse0
- Gene
- acid invertasee0
- Outcome
- limited kernel settinge0
- Qualifier
- additional factors may be responsible for genotypic differencese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a decrease in acid invertase activity is a key factor associated with limited kernel setting under salt stress but additional factors may be responsible for genotypic differences.”
t0“maize”
The same questions in other papers
salinity · yield · Zea mays (maize)Results differ
60 papers in the same direction as this paper · 9 in the opposite direction
- positive
- negative
- negative
66 papers more in this group
See all 70 papers →salinity · soil: biology · Zea mays (maize)Positive and negative results
5 papers in the same direction as this paper · 2 in the opposite direction
- negative
- positive
- positive
4 papers more in this group
See all 8 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.