Abstract
The mid-season large-fruited cultivar Yuhua 9326 and early small-fruited Yuhua 9936 were used to investigate the impacts of drought stress on peanut yield and metabolic regulation at four different growth stages,i. e. seedling,flowering and pegging,podding and mature stage,which was conducted under artificial water control in a full-automatic rainproof tank. The results indicated that water deficiency in all four stages could reduce the yield and influence the metabolic regulation in leaves. Among all those stage,the yield reduction at flowering and pegging was the biggest,the yield reduction was about 25%,followed by seedling and podding,and the mature stage was the least. The results also showed that drought stress at flowering and pegging stage had the largest impacts on the activities of antioxidant enzyme and the content of osmotic adjustment substances and MDA. Under the drought stress at flowering and pegging,the activity of antioxidant enzyme reduced by more than 25%,the content of soluble protein decreased by about 40%,that of soluble sugar and free proline increased by more than 20% and that of MDA rose by about 55%. In conclusion,the flowering and pegging was the most sensitive stage to drought stress. This study identified the sensitive stage to water shortage and provided theoretical basis and technical guidance for scientific irrigation and yield improvement. It played an important role in the water utilization efficiency and per unit yield enhancement of arid and semi-arid areas.
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Claims 9
Claim · model-written summary
Water deficiency at all four stages reduced peanut yield.
- Taxon
- peanut
Arachis hypogaeat0 - Treatment
- water deficiency in all four stagese0
- Outcome
- yielde0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water deficiency in all four stages could reduce the yield”
t0“Peanut”
Claim · model-written summary
Water deficiency influenced leaf metabolic regulation.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- water deficiency in all four stagese0
- Outcome
- metabolic regulation in leavese0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“water deficiency in all four stages could reduce the yield and influence the metabolic regulation in leaves”
t0“Peanut”
Claim · model-written summary
Yield reduction was greatest at flowering and pegging, about 25%.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- flowering and pegginge0
- Outcome
- yield reductione0
- Direction
- biggeste0
- Value
- about 25%e0
- Comparator
- seedling and poddinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the yield reduction at flowering and pegging was the biggest,the yield reduction was about 25%,followed by seedling and podding,and the mature stage was the least”
t0“Peanut”
Claim · model-written summary
Drought at flowering and pegging had the largest effect on antioxidant enzyme activity and osmotic substances and MDA content.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- drought stress at flowering and pegging stagee0
- Outcome
- activities of antioxidant enzyme and the content of osmotic adjustment substances and MDAe0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“drought stress at flowering and pegging stage had the largest impacts on the activities of antioxidant enzyme and the content of osmotic adjustment substances and MDA”
t0“Peanut”
Claim · model-written summary
At flowering and pegging, drought reduced antioxidant enzyme activity by more than 25%.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- drought stress at flowering and pegginge0
- Outcome
- activity of antioxidant enzymee0
- Direction
- reducede0
- Value
- more than 25%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the drought stress at flowering and pegging,the activity of antioxidant enzyme reduced by more than 25%”
t0“Peanut”
Claim · model-written summary
At flowering and pegging, drought decreased soluble protein by about 40%.
- Taxon
- PeanutArachis hypogaeat0
- Treatment
- drought stress at flowering and pegginge0
- Outcome
- content of soluble proteine0
- Direction
- decreasede0
- Value
- about 40%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Under the drought stress at flowering and pegging,the activity of antioxidant enzyme reduced by more than 25%,the content of soluble protein decreased by about 40%”
t0“Peanut”
Claim · model-written summary
At flowering and pegging, drought increased soluble sugar and free proline by more than 20%.
- Taxon
- PeanutArachis hypogaeat0
- Outcome
- soluble sugar and free prolinee0
- Direction
- increasede0
- Value
- more than 20%e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“that of soluble sugar and free proline increased by more than 20%”
t0“Peanut”
Claim · model-written summary
At flowering and pegging, drought raised MDA by about 55%.
- Taxon
- PeanutArachis hypogaeat0
- Outcome
- MDAe0
- Direction
- rosee0
- Value
- about 55%e0
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“that of MDA rose by about 55%”
t0“Peanut”
Claim · model-written summary
Flowering and pegging was identified as the stage most sensitive to drought.
- Taxon
- PeanutArachis hypogaeat0
- Organ / stage
- flowering and pegginge0
- Outcome
- most sensitive stage to drought stresse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the flowering and pegging was the most sensitive stage to drought stress”
t0“Peanut”
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