Abstract
Yield variability of spring pea ( Pisum sativum L.) in farmers' fields is mainly due to soil compaction at sowing and abiotic stresses during the reproductive period. Winter peas flower earlier, and thus should be less sensitive to abiotic stress at the end of the cycle, but because of their sensitivity to frost they must be sown late in autumn when soils are very wet. Pea breeders are working on new winter cultivars that are more resistant to frost and highly sensitive to photoperiod and that could be sown earlier in autumn under better soil conditions. Our aim was to measure crop growth, development, and seed yield of different types of pea cultivars using factorial experiments that evaluated the effect of soil structure, sowing period, and cultivar at two sites in France. Compaction reduced seed yield by 18% at Grignon and 6% at Estrées‐Mons, but had no significant effect on crop development. November sowings resulted in increased seed yield of about 1 t ha −1 at both sites compared with spring sowings, and were associated with larger numbers of reproductive nodes and seeds m −2 . Cultivars exhibited contrasting characteristics in terms of mean seed dry weight, seeds m −2 , and number of reproductive nodes, but final seed yields were similar within sowing periods. The ability of the crop to convert crop growth rate to seed number was independent of environment but decreased linearly with mean seed dry weight of the cultivar. This research suggests that pea breeders should develop new winter pea cultivars with earlier flowering to enhance yield.
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Claims 10
Claim · model-written summary
Compaction reduced pea seed yield by 18% at Grignon.
- Taxon
- spring pea
Lathyrus oleraceuse1 - Treatment
- Compactione0
- Outcome
- seed yielde0
- Direction
- reducede0
- Value
- 18%e0
- Setting
- Grignone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compaction reduced seed yield by 18% at Grignon”
e1“spring pea ( Pisum sativum L.)”
Claim · model-written summary
Compaction reduced pea seed yield by 6% at Estrées Mons.
- Taxon
- spring peaLathyrus oleraceuse1
- Treatment
- Compactione0
- Outcome
- seed yielde0
- Direction
- reducede0
- Value
- 6%e0
- Setting
- Estrées‐Monse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compaction reduced seed yield by 18% at Grignon and 6% at Estrées‐Mons”
e1“spring pea ( Pisum sativum L.)”
Claim · model-written summary
Compaction had no significant effect on crop development.
- Taxon
- spring peaLathyrus oleraceuse1
- Treatment
- Compactione2
- Outcome
- crop developmente0
- Direction
- no significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“had no significant effect on crop development”
e1“spring pea ( Pisum sativum L.)”
e2“Compaction reduced seed yield by 18% at Grignon”
Claim · model-written summary
November sowing increased seed yield about 1 t ha −1 compared with spring sowing.
- Taxon
- spring peaLathyrus oleraceuse1
- Treatment
- November sowingse0
- Outcome
- seed yielde0
- Direction
- increasede0
- Value
- 1 t ha −1e0
- Comparator
- spring sowingse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“November sowings resulted in increased seed yield of about 1 t ha −1 at both sites compared with spring sowings”
e1“spring pea ( Pisum sativum L.)”
Claim · model-written summary
November sowing was associated with more reproductive nodes and seeds per square metre.
- Taxon
- spring peaLathyrus oleraceuse2
- Treatment
- November sowingse1
- Outcome
- numbers of reproductive nodes and seeds m −2e0
- Direction
- largere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“were associated with larger numbers of reproductive nodes and seeds m −2”
e1“November sowings resulted in increased seed yield”
e2“spring pea ( Pisum sativum L.)”
Claim · model-written summary
Cultivars differed in seed weight, seeds per square metre and reproductive nodes.
- Taxon
- spring peaLathyrus oleraceuse1
- Outcome
- mean seed dry weight, seeds m −2 , and number of reproductive nodese0
- Direction
- contrastinge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cultivars exhibited contrasting characteristics in terms of mean seed dry weight, seeds m −2 , and number of reproductive nodes”
e1“spring pea ( Pisum sativum L.)”
Claim · model-written summary
Final seed yields were similar among cultivars within sowing periods.
- Taxon
- spring peaLathyrus oleraceuse1
- Outcome
- final seed yieldse0
- Direction
- similare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“final seed yields were similar within sowing periods”
e1“spring pea ( Pisum sativum L.)”
Claim · model-written summary
Conversion of crop growth rate to seed number was independent of environment.
- Taxon
- spring peaLathyrus oleraceuse1
- Outcome
- ability of the crop to convert crop growth rate to seed numbere0
- Direction
- independente0
- Setting
- environmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The ability of the crop to convert crop growth rate to seed number was independent of environment”
e1“spring pea ( Pisum sativum L.)”
Claim · model-written summary
Conversion of crop growth rate to seed number decreased linearly with cultivar mean seed dry weight.
- Taxon
- spring peaLathyrus oleraceuse2
- Material
- cultivare0
- Outcome
- ability of the crop to convert crop growth rate to seed numbere1
- Direction
- decreased linearlye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“decreased linearly with mean seed dry weight of the cultivar”
e1“The ability of the crop to convert crop growth rate to seed number”
e2“spring pea ( Pisum sativum L.)”
Claim · model-written summary
The authors recommend breeding winter pea cultivars with earlier flowering to enhance yield.
- Taxon
- peaLathyrus oleraceuse0
- Outcome
- develop new winter pea cultivars with earlier flowering to enhance yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“pea breeders should develop new winter pea cultivars with earlier flowering to enhance yield”
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See all 69 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.