Abstract
Pod retention and pod filling of V. faba was studied under different patterns of water supply. Mild water shortage during flowering, followed by plenty of water after flowering (d-i), resulted in high seed yields at lower stem nodes (defined as the first podding node to node number 11) in cv. Alfred. The inverse treatment (i-d: plenty of water during flowering, followed by increasing water shortage after flowering), but also i-i (plenty of water during and after flowering), showed 20-60% lower seed yields at those nodes. This effect was mainly due to a lower number of pods per node. In i-i, but not in i-d, the low pod retention at lower nodes was compensated for at higher nodes (defined as from node 12 to the last podding node). These results helped to explain the mechanism of the interaction between water supply pattern and the development of reproductive sinks. The quantitative consequences of these effects on the relation between total water use and seed yield are discussed. Without taking into account different water supply patterns, a linear relation between total water use (represented by total DM production) and seed yield already explained 75-85% of the variation in seed yield. If different water supply patterns were included in the regression analysis, >90% of the variation in seed yield could be explained. The i-i patterns, compared with d-i, resulted in suboptimum DM partitioning to reproductive organs, but showed a smaller seed yield variability. This indicated that defining and maintaining the optimum level of (mild) water shortage under varying climatological conditions needed further attention. (Abstract retrieved from CAB Abstracts by CABI’s permission)
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Claims 10
Claim · model-written summary
Mild flowering-stage water shortage followed by ample water gave high seed yield at lower nodes of cv. Alfred.
- Taxon
- Vicia faba L.
Vicia fabat0 - Material
- cv. Alfrede0
- Organ / stage
- lower stem nodese0
- Treatment
- Mild water shortage during flowering, followed by plenty of water after flowering (d-i)e0
- Outcome
- seed yieldse0
- Direction
- highe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mild water shortage during flowering, followed by plenty of water after flowering (d-i), resulted in high seed yields at lower stem nodes (defined as the first podding node to node number 11) in cv. Alfred”
t0“Vicia faba L.”
Claim · model-written summary
The i-d water pattern yielded 20-60% less seed at lower nodes than d-i.
- Taxon
- Vicia faba L.Vicia fabat0
- Treatment
- i-d: plenty of water during flowering, followed by increasing water shortage after floweringe0
- Outcome
- seed yieldse0
- Direction
- lowere0
- Value
- 20-60%e0
- Comparator
- d-ie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inverse treatment (i-d: plenty of water during flowering, followed by increasing water shortage after flowering), but also i-i (plenty of water during and after flowering), showed 20-60% lower seed yields at those nodes”
t0“Vicia faba L.”
e1“water after flowering (d-i)”
Claim · model-written summary
The i-i water pattern yielded 20-60% less seed at lower nodes than d-i.
- Taxon
- Vicia faba L.Vicia fabat0
- Treatment
- i-i (plenty of water during and after flowering)e0
- Outcome
- seed yieldse0
- Direction
- lowere0
- Value
- 20-60%e0
- Comparator
- d-ie1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The inverse treatment (i-d: plenty of water during flowering, followed by increasing water shortage after flowering), but also i-i (plenty of water during and after flowering), showed 20-60% lower seed yields at those nodes”
t0“Vicia faba L.”
e1“water after flowering (d-i)”
Claim · model-written summary
Lower pod number per node mainly explained the lower seed yields.
- Taxon
- Vicia faba L.Vicia fabat0
- Outcome
- lower number of pods per nodee0
- Qualifier
- mainly due toe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This effect was mainly due to a lower number of pods per node”
t0“Vicia faba L.”
Claim · model-written summary
The i-i pattern compensated low pod retention at lower nodes with retention at higher nodes.
- Taxon
- Vicia faba L.Vicia fabat0
- Organ / stage
- higher nodese0
- Outcome
- pod retentione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In i-i, but not in i-d, the low pod retention at lower nodes was compensated for at higher nodes”
t0“Vicia faba L.”
Claim · model-written summary
The i-d pattern did not compensate lower-node pod retention at higher nodes.
- Taxon
- Vicia faba L.Vicia fabat0
- Organ / stage
- higher nodese0
- Outcome
- pod retentione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In i-i, but not in i-d, the low pod retention at lower nodes was compensated for at higher nodes”
t0“Vicia faba L.”
Claim · model-written summary
Total dry matter production alone explained 75-85% of seed-yield variation.
- Taxon
- Vicia faba L.Vicia fabat0
- Treatment
- total water usee0
- Outcome
- variation in seed yielde0
- Value
- 75-85%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a linear relation between total water use (represented by total DM production) and seed yield already explained 75-85% of the variation in seed yield”
t0“Vicia faba L.”
Claim · model-written summary
Adding water-supply patterns explained more than 90% of seed-yield variation.
- Taxon
- Vicia faba L.Vicia fabat0
- Treatment
- different water supply patternse0
- Outcome
- variation in seed yielde0
- Value
- >90%e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“If different water supply patterns were included in the regression analysis, >90% of the variation in seed yield could be explained”
t0“Vicia faba L.”
Claim · model-written summary
The i-i pattern caused suboptimal dry-matter partitioning to reproductive organs relative to d-i.
- Taxon
- Vicia faba L.Vicia fabat0
- Treatment
- i-i patternse0
- Outcome
- DM partitioning to reproductive organse0
- Direction
- suboptimume0
- Comparator
- d-ie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The i-i patterns, compared with d-i, resulted in suboptimum DM partitioning to reproductive organs”
t0“Vicia faba L.”
Claim · model-written summary
The i-i pattern showed smaller seed-yield variability than d-i.
- Taxon
- Vicia faba L.Vicia fabat0
- Treatment
- i-i patternse0
- Outcome
- seed yield variabilitye0
- Direction
- smallere0
- Comparator
- d-ie0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The i-i patterns, compared with d-i, resulted in suboptimum DM partitioning to reproductive organs, but showed a smaller seed yield variability”
t0“Vicia faba L.”
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