Abstract
Abstract Maize is a sensitive crop to drought and heat stresses, particularly at the reproductive stages of development. The present study investigated the individual and interactive effects of drought (50% field capacity) and heat (38 °C/30 °C) stresses on morpho-physiological growth, yield, nutrient uptake and oxidative metabolism in two maize hybrids i.e., ‘Xida 889’ and ‘Xida 319’. The stress treatments were applied at tasseling stage for 15 days. Drought, heat and drought + heat stress caused oxidative stress by the over-production of ROS (O 2− , H 2 O 2 , OH − ) and enhanced malondialdehyde contents, which led to reduced photosynthetic components, nutrients uptake and yield attributes. The concurrent occurrence of drought and heat was more severe for maize growth than the single stress. However, both stresses induced the metabolites accumulation and enzymatic and non-enzymatic antioxidants to prevent the oxidative damage. The performance of Xida 899 was more prominent than the Xida 319. The greater tolerance of Xida 889 to heat and drought stresses was attributed to strong antioxidant defense system, higher osmolyte accumulation, and maintenance of photosynthetic pigments and nutrient balance compared with Xida 319.
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Claims 10
Claim · model-written summary
Drought, heat and combined stress increased reactive oxygen species.
- Taxon
- maize hybridst0
- Treatment
- Drought, heat and drought + heat stresse0
- Outcome
- over-production of ROSe0
- Direction
- over-productione0
Not reportedComparator
Verbatim
e0“Drought, heat and drought + heat stress caused oxidative stress by the over-production of ROS (O 2− , H 2 O 2 , OH − )”
t0“maize hybrids”
Claim · model-written summary
The stresses enhanced malondialdehyde content.
- Taxon
- maize hybridst0
- Treatment
- drought and heat stressest0
- Outcome
- malondialdehyde contentse0
- Direction
- enhancede0
Not reportedComparator
Verbatim
e0“enhanced malondialdehyde contents”
t0“drought and heat stresses on morpho-physiological attributes, yield, nutrient uptake and oxidative status in maize hybrids”
Claim · model-written summary
The stresses reduced photosynthetic components.
- Taxon
- maize hybridst0
- Treatment
- drought and heat stressest0
- Outcome
- photosynthetic componentse0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“which led to reduced photosynthetic components, nutrients uptake and yield attributes.”
t0“drought and heat stresses on morpho-physiological attributes, yield, nutrient uptake and oxidative status in maize hybrids”
Claim · model-written summary
The stresses reduced nutrient uptake.
Not reportedComparator
Verbatim
e0“which led to reduced photosynthetic components, nutrients uptake and yield attributes.”
t0“drought and heat stresses on morpho-physiological attributes, yield, nutrient uptake and oxidative status in maize hybrids”
Claim · model-written summary
The stresses reduced yield attributes.
Not reportedComparator
Verbatim
e0“which led to reduced photosynthetic components, nutrients uptake and yield attributes.”
t0“drought and heat stresses on morpho-physiological attributes, yield, nutrient uptake and oxidative status in maize hybrids”
Claim · model-written summary
Combined drought and heat harmed maize growth more than either stress alone.
- Treatment
- concurrent occurrence of drought and heate0
- Outcome
- maize growthe0
- Direction
- more severee0
- Comparator
- single stresse0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The concurrent occurrence of drought and heat was more severe for maize growth than the single stress.”
Claim · model-written summary
Both stresses induced metabolite accumulation.
Not reportedComparator
Verbatim
e0“both stresses induced the metabolites accumulation and enzymatic and non-enzymatic antioxidants”
t0“maize hybrids”
Claim · model-written summary
Both stresses induced enzymatic and nonenzymatic antioxidants.
- Taxon
- maize hybridst0
- Treatment
- both stressese0
- Outcome
- enzymatic and non-enzymatic antioxidantse0
- Direction
- inducede0
Not reportedComparator
Verbatim
e0“both stresses induced the metabolites accumulation and enzymatic and non-enzymatic antioxidants”
t0“maize hybrids”
Claim · model-written summary
Xida 899 was reported to perform better than Xida 319.
Verbatim
e0“The performance of Xida 899 was more prominent than the Xida 319.”
Claim · model-written summary
Xida 889 was interpreted as more drought and heat tolerant than Xida 319 due to its antioxidant, osmolyte, pigment and nutrient status.
Verbatim
e0“The greater tolerance of Xida 889 to heat and drought stresses was attributed to strong antioxidant defense system, higher osmolyte accumulation, and maintenance of photosynthetic pigments and nutrient balance compared with Xida 319.”
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See all 121 papers →8 of 10 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.
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.