Abstract
Seed yield, its three components (bolls per unit area, seed size, and seeds per boll), oil content, and iodine value were studied in F 2 populations of a diallel cross among nine cultivars of flax ( Linum usitatissimum L.) at two locations and three plant densities. Average heterosis for yield in F 2 was 6% relative to the midparent values. Four F 2 populations exceeded in yield the high‐yielding parent by 15 to 19%. One F 2 population, ‘Russian’ ✕ C.I. 1664, exceeded by 5.5% the yield of ‘Marine’, the highest yielding cultivar. Varying plant density did not affect the magnitude of heterosis, mean oil percentage, iodine value, nor the estimates of combining ability. Plant density did have a significant effect on mean yields and on the yield components, and showed a significant interaction with genotypes for yield and bolls per unit area. In spite of the latter interaction, seven of the 36 F 2 populations were among the highest 25% in yield in all three densities. The interactions of locations with genotypes were significant for most characters, which suggests that more than one test location should be used to evaluate hybrid flax populations. General combining ability effects were significant and much larger for all characters than were specific combining ability effects at all densities.
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Claims 10
Claim · model-written summary
Average F2 yield heterosis was 6% over midparent values.
- Taxon
- Flax
Linum usitatissimumt0 - Outcome
- heterosis for yielde0
- Value
- 6%e0
- Comparator
- midparent valuese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Average heterosis for yield in F 2 was 6% relative to the midparent values.”
t0“Flax”
Claim · model-written summary
Four F2 populations yielded 15 to 19% above the high yielding parent.
- Taxon
- FlaxLinum usitatissimumt0
- Outcome
- yielde0
- Direction
- exceedede0
- Value
- 15 to 19%e0
- Comparator
- high‐yielding parente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four F 2 populations exceeded in yield the high‐yielding parent by 15 to 19%.”
t0“Flax”
Claim · model-written summary
Russian × C.I. 1664 yielded 5.5% more than Marine.
- Taxon
- FlaxLinum usitatissimumt0
- Material
- ‘Russian’ ✕ C.I. 1664e0
- Outcome
- yielde0
- Direction
- exceedede0
- Value
- 5.5%e0
- Comparator
- ‘Marine’e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“One F 2 population, ‘Russian’ ✕ C.I. 1664, exceeded by 5.5% the yield of ‘Marine’, the highest yielding cultivar.”
t0“Flax”
Claim · model-written summary
Plant density did not alter heterosis, oil percentage, iodine value or combining ability estimates.
- Taxon
- FlaxLinum usitatissimumt0
- Treatment
- Varying plant densitye0
- Outcome
- magnitude of heterosis, mean oil percentage, iodine value, nor the estimates of combining abilitye0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Varying plant density did not affect the magnitude of heterosis, mean oil percentage, iodine value, nor the estimates of combining ability.”
t0“Flax”
Claim · model-written summary
Plant density significantly affected mean yield and yield components.
- Taxon
- FlaxLinum usitatissimumt0
- Treatment
- Plant densitye0
- Outcome
- mean yields and on the yield componentse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plant density did have a significant effect on mean yields and on the yield components”
t0“Flax”
Claim · model-written summary
Plant density interacted significantly with genotype for yield and bolls per unit area.
- Taxon
- FlaxLinum usitatissimumt0
- Material
- genotypese0
- Outcome
- yield and bolls per unit areae0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“showed a significant interaction with genotypes for yield and bolls per unit area.”
t0“Flax”
Claim · model-written summary
Seven of 36 F2 populations ranked in the highest yield quartile at all densities.
- Taxon
- FlaxLinum usitatissimumt0
- Outcome
- highest 25% in yielde0
- Value
- seven of the 36 F 2 populationse0
- Qualifier
- all three densitiese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seven of the 36 F 2 populations were among the highest 25% in yield in all three densities.”
t0“Flax”
Claim · model-written summary
Location by genotype interactions were significant for most characters.
- Taxon
- FlaxLinum usitatissimumt0
- Material
- genotypese0
- Outcome
- most characterse0
- Setting
- locationse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The interactions of locations with genotypes were significant for most characters”
t0“Flax”
Claim · model-written summary
The authors recommend multiple locations for evaluating hybrid flax populations.
- Taxon
- flaxLinum usitatissimume0
- Outcome
- more than one test location should be used to evaluate hybrid flax populationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“more than one test location should be used to evaluate hybrid flax populations.”
Claim · model-written summary
General combining ability effects were significant and larger than specific combining ability for all characters at all densities.
- Taxon
- FlaxLinum usitatissimumt0
- Outcome
- General combining ability effectse0
- Direction
- much largere0
- Qualifier
- all characters than were specific combining ability effects at all densitiese0
- Comparator
- specific combining ability effectse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“General combining ability effects were significant and much larger for all characters than were specific combining ability effects at all densities.”
t0“Flax”
The same questions in other papers
density · quality: oil · Linum usitatissimum (flax)Positive and negative results
5 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- positive
6 papers more in this group
See all 10 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.