Abstract
Summary Four experiments are reported in which the effects of a range of physiological ages of seed tubers on growth and yield in seed crops and regrowth of the progeny seed were studied. Increasing the age of seed in Home Guard, Arran Comet, Pentland Javelin and Désirée advanced emergence, tuber initiation and early growth but restricted leaf area index and reduced the number of tubers and seed tuber yield. In these varieties increasing the physiological age of seed shortened the dormancy of the progeny seed and slightly increased sprout lengths at replanting but in Home Guard had no effects on field growth and tuber yield. In a further series of experiments at Tenby seed of five varieties (Home Guard, Red Craigs Royal, Désirée, Maris Piper and Stormont Enterprise) was multiplied over 2 years using husbandry methods designed to produce seed of contrasting ages. Once-grown seed from Tenby which had been planted and harvested early in the season was stored at either 4 or 12 °C and grown again at Tenby before being stored again at either 4 or 12 °C. The seed resulting from this multiplication over 2 years was compared with seed imported from seed-growing areas stored at the two temperatures. The seasons for the two multiplications at Tenby (1975 and 1976) were hot and were followed by an especially cold and late spring yet few differences between seed from Tenby and other areas could be detected. Where seed from different areas entered sprouting temperatures at different times and therefore produced different ages of seed at replanting large effects on yield were found. Storage temperature had large effects on regrowth of tubers in Home Guard, Red Craigs Royal and Stormont Enterprise for storage at 12 °C produced ‘little potato disorder’ in the majority of plants in one storage phase while storage at lower temperature produced full plant stands and yields. The results provided no support for the suggestion that repeated multiplication in warm lowland areas may lead to cumulative deterioration in the performance of seed.
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Claims 11
Claim · model-written summary
Increasing seed age advanced emergence, tuber initiation and early growth in four potato varieties.
- Taxon
- potatoes
Solanum tuberosumt0 - Material
- Home Guard, Arran Comet, Pentland Javelin and Désiréee0
- Treatment
- Increasing the age of seede0
- Outcome
- emergence, tuber initiation and early growthe0
- Direction
- advancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the age of seed in Home Guard, Arran Comet, Pentland Javelin and Désirée advanced emergence, tuber initiation and early growth”
t0“potatoes”
Claim · model-written summary
Increasing seed age restricted leaf area index in four potato varieties.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Home Guard, Arran Comet, Pentland Javelin and Désiréee0
- Treatment
- Increasing the age of seede0
- Outcome
- leaf area indexe0
- Direction
- restrictede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the age of seed in Home Guard, Arran Comet, Pentland Javelin and Désirée advanced emergence, tuber initiation and early growth but restricted leaf area index”
t0“potatoes”
Claim · model-written summary
Increasing seed age reduced tuber number and seed-tuber yield in four potato varieties.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Home Guard, Arran Comet, Pentland Javelin and Désiréee0
- Treatment
- Increasing the age of seede0
- Outcome
- number of tubers and seed tuber yielde0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Increasing the age of seed in Home Guard, Arran Comet, Pentland Javelin and Désirée advanced emergence, tuber initiation and early growth but restricted leaf area index and reduced the number of tubers and seed tuber yield”
t0“potatoes”
Claim · model-written summary
Increasing seed physiological age shortened dormancy of progeny seed in these potato varieties.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- increasing the physiological age of seede0
- Outcome
- dormancy of the progeny seede0
- Direction
- shortenede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In these varieties increasing the physiological age of seed shortened the dormancy of the progeny seed”
t0“potatoes”
Claim · model-written summary
Increasing seed physiological age slightly increased sprout length at replanting.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- increasing the physiological age of seede0
- Outcome
- sprout lengths at replantinge0
- Direction
- slightly increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing the physiological age of seed shortened the dormancy of the progeny seed and slightly increased sprout lengths at replanting”
t0“potatoes”
Claim · model-written summary
In Home Guard, increased seed age had no effect on field growth or tuber yield.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Home Guarde0
- Treatment
- increasing the physiological age of seede1
- Outcome
- field growth and tuber yielde0
- Direction
- no effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in Home Guard had no effects on field growth and tuber yield”
t0“potatoes”
e1“increasing the physiological age of seed shortened the dormancy of the progeny seed”
Claim · model-written summary
Few differences in potato seed performance were found between seed produced at Tenby and seed from other areas.
- Taxon
- potatoesSolanum tuberosumt0
- Outcome
- differences between seed from Tenby and other arease0
- Direction
- few differencese0
- Setting
- Tenbye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“few differences between seed from Tenby and other areas could be detected”
t0“potatoes”
Claim · model-written summary
Different times of entering sprouting temperatures, producing different seed ages at replanting, had large effects on potato yield.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- different ages of seed at replantinge0
- Outcome
- yielde0
- Direction
- large effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Where seed from different areas entered sprouting temperatures at different times and therefore produced different ages of seed at replanting large effects on yield were found.”
t0“potatoes”
Claim · model-written summary
Storage at 12 °C produced little potato disorder in most plants of three potato varieties.
- Taxon
- potatoesSolanum tuberosumt0
- Material
- Home Guard, Red Craigs Royal and Stormont Enterprisee0
- Treatment
- storage at 12 °Ce0
- Outcome
- little potato disordere0
- Direction
- producede0
- Qualifier
- majority of plants in one storage phasee0
- Comparator
- storage at lower temperaturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Storage temperature had large effects on regrowth of tubers in Home Guard, Red Craigs Royal and Stormont Enterprise for storage at 12 °C produced ‘little potato disorder’ in the majority of plants in one storage phase while storage at lower temperature produced full plant stands and yields.”
t0“potatoes”
Claim · model-written summary
Lower storage temperature produced full plant stands and yields compared with storage at 12 °C.
- Taxon
- potatoesSolanum tuberosumt0
- Treatment
- storage at lower temperaturee0
- Outcome
- plant stands and yieldse0
- Direction
- fulle0
- Comparator
- storage at 12 °Ce0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“storage at 12 °C produced ‘little potato disorder’ in the majority of plants in one storage phase while storage at lower temperature produced full plant stands and yields.”
t0“potatoes”
Claim · model-written summary
Repeated multiplication in warm lowland areas did not show cumulative deterioration of seed performance.
- Taxon
- potatoesSolanum tuberosumt0
- Outcome
- cumulative deterioration in the performance of seede0
- Direction
- no supporte0
- Setting
- warm lowland arease0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results provided no support for the suggestion that repeated multiplication in warm lowland areas may lead to cumulative deterioration in the performance of seed.”
t0“potatoes”
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See all 6 papers →storage · yield · Solanum tuberosum (potato)Positive and negative results
10 papers in the same direction as this paper · 6 in the opposite direction · 1 reporting no difference from an alternative
- negative
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See all 18 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.