Abstract
The effects of periods of drought during different phases of reproductive growth of faba bean ( Vicia faba L.) cv. Xichang Dabai were investigated in a pot experiment at Xichang Agricultural College, China. Parameters were total dry matter; seed yield; yield components; concentrations of nitrogen, phosphorus, and potassium; and total uptake in different organs. All drought treatments decreased total dry matter production and seed yield per plant. Plants subjected to drought from initiation of pod-set to full pod-set (stage D4) produced 32% less total dry matter and 45% less seed yield than the irrigated control. Mean seed weight was a relatively stable yield component. Statistical analysis indicated that only plants subjected to drought at stages D4 and D5 (drought from full pod-set to maturity) had a significantly ( P < 0·05) lower mean seed weight than the control. The nutrient concentration was generally high in the younger or more active organs of faba bean, and comparing the nutrients, the N concentration in leaves, stems, flowers, pods, and grain was greatest, followed by K concentration, and P concentration was least. All soil drought treatments decreased the nutrient concentration in various organs after 17–19 days of drought. However, the decreases at maturity were less clear, except the nutrient concentrations in stems and leaves. Water deficit significantly decreased total grain nutrients per plant, the decreases being 34–45% for N uptake, 34–47% for P uptake, and 33–46% for K uptake. Simple linear correlations with the P and K concentration in leaves at maturity and number of pods and seeds per plant gave a correlation coefficient ( r ) of 0·804–0·874.
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Claims 12
Claim · model-written summary
All drought treatments reduced total dry matter and seed yield per plant.
- Taxon
- faba bean
Vicia fabae1 - Treatment
- drought treatmentse0
- Outcome
- total dry matter production and seed yield per plante0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All drought treatments decreased total dry matter production and seed yield per plant.”
e1“faba bean ( Vicia faba L.)”
Claim · model-written summary
Drought from pod set initiation through full pod set reduced total dry matter by 32%.
- Taxon
- faba beanVicia fabae1
- Treatment
- drought from initiation of pod-set to full pod-set (stage D4)e0
- Outcome
- total dry mattere0
- Direction
- lesse0
- Value
- 32%e0
- Comparator
- irrigated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants subjected to drought from initiation of pod-set to full pod-set (stage D4) produced 32% less total dry matter and 45% less seed yield than the irrigated control.”
e1“faba bean ( Vicia faba L.)”
Claim · model-written summary
The D4 drought reduced seed yield 45% against irrigation.
- Taxon
- faba beanVicia fabae1
- Treatment
- drought from initiation of pod-set to full pod-set (stage D4)e0
- Outcome
- seed yielde0
- Direction
- lesse0
- Value
- 45%e0
- Comparator
- irrigated controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants subjected to drought from initiation of pod-set to full pod-set (stage D4) produced 32% less total dry matter and 45% less seed yield than the irrigated control.”
e1“faba bean ( Vicia faba L.)”
Claim · model-written summary
Mean seed weight was relatively stable except for a significant reduction under D4 and D5 drought.
- Taxon
- faba beanVicia fabae1
- Treatment
- drought at stages D4 and D5e0
- Outcome
- mean seed weighte0
- Direction
- lowere0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only plants subjected to drought at stages D4 and D5 (drought from full pod-set to maturity) had a significantly ( P < 0·05) lower mean seed weight than the control.”
e1“faba bean ( Vicia faba L.)”
Claim · model-written summary
Younger or more active faba bean organs generally had high nutrient concentration.
- Taxon
- faba beanVicia fabae0
- Organ / stage
- younger or more active organse0
- Outcome
- nutrient concentratione0
- Direction
- highe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The nutrient concentration was generally high in the younger or more active organs of faba bean”
Claim · model-written summary
Nitrogen concentration was greatest, followed by potassium and phosphorus, across the listed organs.
- Taxon
- faba beanVicia fabae1
- Organ / stage
- leaves, stems, flowers, pods, and graine0
- Outcome
- N concentratione0
- Direction
- greateste0
- Qualifier
- followed by K concentration, and P concentration was leaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the N concentration in leaves, stems, flowers, pods, and grain was greatest, followed by K concentration, and P concentration was least.”
e1“faba bean ( Vicia faba L.)”
Claim · model-written summary
All soil drought treatments reduced organ nutrient concentrations after 17–19 days.
- Taxon
- faba beanVicia fabae1
- Treatment
- soil drought treatmentse0
- Outcome
- nutrient concentratione0
- Direction
- decreasede0
- Qualifier
- after 17–19 days of droughte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All soil drought treatments decreased the nutrient concentration in various organs after 17–19 days of drought.”
e1“faba bean ( Vicia faba L.)”
Claim · model-written summary
At maturity, nutrient concentration declines were less clear except in stems and leaves.
- Taxon
- faba beanVicia fabae1
- Outcome
- nutrient concentrations in stems and leavese0
- Direction
- decreasese0
- Qualifier
- at maturitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the decreases at maturity were less clear, except the nutrient concentrations in stems and leaves.”
e1“faba bean ( Vicia faba L.)”
Claim · model-written summary
Water deficit significantly reduced total grain nitrogen uptake by 34–45%.
- Taxon
- faba beanVicia fabae1
- Treatment
- Water deficite0
- Outcome
- N uptakee0
- Direction
- decreasede0
- Value
- 34–45%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit significantly decreased total grain nutrients per plant, the decreases being 34–45% for N uptake, 34–47% for P uptake, and 33–46% for K uptake.”
e1“faba bean ( Vicia faba L.)”
Claim · model-written summary
Water deficit significantly reduced total grain phosphorus uptake by 34–47%.
- Taxon
- faba beanVicia fabae1
- Treatment
- Water deficite0
- Outcome
- P uptakee0
- Direction
- decreasede0
- Value
- 34–47%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit significantly decreased total grain nutrients per plant, the decreases being 34–45% for N uptake, 34–47% for P uptake, and 33–46% for K uptake.”
e1“faba bean ( Vicia faba L.)”
Claim · model-written summary
Water deficit significantly reduced total grain potassium uptake by 33–46%.
- Taxon
- faba beanVicia fabae1
- Treatment
- Water deficite0
- Outcome
- K uptakee0
- Direction
- decreasede0
- Value
- 33–46%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Water deficit significantly decreased total grain nutrients per plant, the decreases being 34–45% for N uptake, 34–47% for P uptake, and 33–46% for K uptake.”
e1“faba bean ( Vicia faba L.)”
Claim · model-written summary
Leaf phosphorus and potassium concentration at maturity correlated with pod and seed counts, r 0.804–0.874.
- Taxon
- faba beanVicia fabae1
- Organ / stage
- leaves at maturitye0
- Compound
- P and Ke0
- Outcome
- number of pods and seeds per plante0
- Value
- 0·804–0·874e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Simple linear correlations with the P and K concentration in leaves at maturity and number of pods and seeds per plant gave a correlation coefficient ( r ) of 0·804–0·874.”
e1“faba bean ( Vicia faba L.)”
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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.