Abstract
Studies were conducted to determine the mechanism which regulates flowering pattern in flax ( Linum usitatissimum L.). CI 1303 flax produced flowers in cycles with distinct blossoming periods separated by brief rest periods (20 days) when grown in the field or in green. house and growth chamber environments in nutrient solution. Removal of bolls at the end of the first flowering period caused prompt renewal of flower production. Daily flower removal resulted in continuous flowering without rest periods and without plant senescence. An increase in light intensity from 14,300 to 25,500 lux increased seed production in the first flowering period, but further increase to 31,900 lux produced no additional increase in yield. Enhancement of CO 2 level to 1270 ppm increased flower, boll, and seed production in the first flowering peirod. The plants flowered in cycles in spite of high light and CO 2 levels. Buds excised from the panicle and main‐stem and cultured in vitro produced shoots and then, in 4 to 30 days, produced flowers. Blossoms were produced even by buds which are normally inhibited in the intact plant. Maximum flower counts were obtained from buds isolated at the beginning of a flowering period. Auxins and gibberellin added to the medium at 5 or I0 ppm levels inhibited flower development. It is concluded that cyclic flowering is causally regulated by hormonal systems, but the number of flowers produced in each flowering period is limited by nutritional factors and rate of plant senescence.
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Claims 14
Claim · model-written summary
CI 1303 flax flowered in cycles with brief rest periods of 20 days between blossoming periods.
- Taxon
- flax
Linum usitatissimumt0 - Material
- CI 1303e1
- Outcome
- produced flowers in cyclese1
- Value
- 20 dayse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e1“CI 1303 flax produced flowers in cycles with distinct blossoming periods separated by brief rest periods (20 days)”
Claim · model-written summary
Removal of bolls at the end of the first flowering period promptly renewed flower production.
- Taxon
- flaxLinum usitatissimumt0
- Treatment
- Removal of bolls at the end of the first flowering periode2
- Outcome
- renewal of flower productione2
- Direction
- increaseinferrede2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e2“Removal of bolls at the end of the first flowering period caused prompt renewal of flower production”
Claim · model-written summary
Daily flower removal produced continuous flowering without rest periods or plant senescence.
- Taxon
- flaxLinum usitatissimumt0
- Treatment
- Daily flower removale3
- Outcome
- continuous flowering without rest periodse3
- Direction
- increaseinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e3“Daily flower removal resulted in continuous flowering without rest periods and without plant senescence”
Claim · model-written summary
Increasing light intensity from 14,300 to 25,500 lux increased seed production in the first flowering period.
- Taxon
- flaxLinum usitatissimumt0
- Treatment
- increase in light intensity from 14,300 to 25,500 luxe4
- Outcome
- seed production in the first flowering periode4
- Direction
- increasede4
- Comparator
- 14,300e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e4“An increase in light intensity from 14,300 to 25,500 lux increased seed production in the first flowering period”
Claim · model-written summary
A further increase to 31,900 lux gave no additional yield.
- Taxon
- flaxLinum usitatissimumt0
- Treatment
- further increase to 31,900 luxe5
- Outcome
- yielde5
- Direction
- no additional increasee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e5“further increase to 31,900 lux produced no additional increase in yield”
Claim · model-written summary
Raising CO2 to 1270 ppm increased flower, boll and seed production in the first flowering period.
- Taxon
- flaxLinum usitatissimumt0
- Treatment
- Enhancement of CO 2 level to 1270 ppme6
- Outcome
- flower, boll, and seed productione6
- Direction
- increasede6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e6“Enhancement of CO 2 level to 1270 ppm increased flower, boll, and seed production in the first flowering peirod”
Claim · model-written summary
Plants flowered in cycles despite high light and CO2 levels.
- Taxon
- flaxLinum usitatissimumt0
- Outcome
- flowered in cyclese7
- Qualifier
- in spite of high light and CO 2 levelse7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e7“The plants flowered in cycles in spite of high light and CO 2 levels”
Claim · model-written summary
Buds excised from the panicle and main-stem and cultured in vitro produced flowers within 4 to 30 days.
- Taxon
- flaxLinum usitatissimumt0
- Organ / stage
- Buds excised from the panicle and main‐steme1
- Treatment
- cultured in vitroe1
- Outcome
- produced flowerse1
- Direction
- increaseinferrede1
- Value
- 4 to 30 dayse1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e1“Buds excised from the panicle and main‐stem and cultured in vitro produced shoots and then, in 4 to 30 days, produced flowers”
Claim · model-written summary
Buds excised from the panicle and main-stem and cultured in vitro produced shoots.
- Taxon
- flaxLinum usitatissimumt0
- Organ / stage
- Buds excised from the panicle and main‐steme1
- Treatment
- cultured in vitroe1
- Outcome
- produced shootse1
- Direction
- increaseinferrede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e1“Buds excised from the panicle and main‐stem and cultured in vitro produced shoots and then, in 4 to 30 days, produced flowers”
Claim · model-written summary
Flowers were produced even by buds normally inhibited in the intact plant.
- Taxon
- flaxLinum usitatissimumt0
- Organ / stage
- budse1
- Outcome
- Blossoms were producede1
- Qualifier
- normally inhibited in the intact plante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e1“Blossoms were produced even by buds which are normally inhibited in the intact plant”
Claim · model-written summary
Maximum flower counts were obtained from buds isolated at the beginning of a flowering period.
- Taxon
- flaxLinum usitatissimumt0
- Organ / stage
- buds isolated at the beginning of a flowering periode1
- Outcome
- Maximum flower countse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e1“Maximum flower counts were obtained from buds isolated at the beginning of a flowering period”
Claim · model-written summary
Auxins and gibberellin at 5 or 10 ppm in the medium inhibited flower development in vitro.
- Taxon
- flaxLinum usitatissimumt0
- Treatment
- Auxins and gibberellin added to the medium at 5 or I0 ppm levelse1
- Outcome
- flower developmente1
- Direction
- inhibitede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e1“Auxins and gibberellin added to the medium at 5 or I0 ppm levels inhibited flower development”
Claim · model-written summary
Cyclic flowering is causally regulated by hormonal systems.
- Taxon
- flaxLinum usitatissimumt0
- Outcome
- cyclic floweringe1
- Qualifier
- causally regulated by hormonal systemse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e1“It is concluded that cyclic flowering is causally regulated by hormonal systems”
Claim · model-written summary
The number of flowers per flowering period is limited by nutritional factors and the rate of plant senescence.
- Taxon
- flaxLinum usitatissimumt0
- Outcome
- number of flowers produced in each flowering periode1
- Qualifier
- limited by nutritional factors and rate of plant senescencee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Cyclic Flowering Patterns in Flax”
e1“the number of flowers produced in each flowering period is limited by nutritional factors and rate of plant senescence”
The same questions in other papers
co2 · yield · Linum usitatissimum (flax)Positive and negative results
1 in the opposite direction
- no effect
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.