Abstract
SUMMARY In 1984 and 1985, the growth of axillary buds of Brussels sprouts plants was studied at Cockle Park, Northumberland, UK. Bud growth commenced in late September or early October and continued at all nodes until the final harvest in December. Total bud yield increased at a broadly constant rate until late November but at a decreasing rate thereafter. Plants produced c. 100 nodes with buds ≥ 5 mm diameter. The largest buds were c. 40 mm diameter and 25 g fresh weight. Bud size increased from the base of the stem upwards to between the 20th and 40th nodes and then decreased towards the apex. Nodes 20–40 (20% of the total) produced c. 40–45% of total bud yield. The size profile of leaves along the stem followed a similar pattern to the buds and the largest buds were in the axils of the largest leaves. There were close relationships between bud fresh weight and size, bud fresh weight and size, bud fresh weight and volume and log 10 bud fresh weight and log 10 bud size ( r 2 ≥ 0·995). The density of buds was c. 0·8 and bud fresh weight doubled for each 5 mm increase in bud diameter. Current photosynthesis of the leaf canopy was apparently the major source of assimilates for bud growth. A C 14 tracing experiment suggested that growth of individual buds was mainly supported by their subtending leaves. There was no evidence of re-translocation of dry matter from dying leaves or the stems to buds or of substantial production of dry matter by the buds themselves. Rates of bud photosynthesis were only about 10% of the rate of leaves. The continued increase in bud fresh weight and size at the lowest nodes when leaves were senescing rapidly and after they had abscissed was probably mainly the result of water uptake rather than dry matter accumulation.
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Claims 18
Claim · model-written summary
Bud growth began in late September or early October and continued through December.
- Taxon
- Brussels sprouts
Brassica oleracea var. gemmiferat0 - Outcome
- Bud growthe0
Not reportedOrgan / stage
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bud growth commenced in late September or early October and continued at all nodes until the final harvest in December”
t0“Brussels sprouts”
Claim · model-written summary
Total bud yield increased at a broadly constant rate until late November.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- Total bud yielde0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Total bud yield increased at a broadly constant rate until late November”
t0“Brussels sprouts”
Claim · model-written summary
Total bud yield increased at a decreasing rate thereafter.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- Total bud yielde1
- Direction
- decreasing ratee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at a decreasing rate thereafter”
e1“Total bud yield increased”
t0“Brussels sprouts”
Claim · model-written summary
Plants produced about 100 nodes with buds at least 5 mm diameter.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- nodes with budse0
- Value
- c. 100e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants produced c. 100 nodes with buds ≥ 5 mm diameter”
t0“Brussels sprouts”
Claim · model-written summary
The largest buds were about 40 mm in diameter.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- diametere0
- Value
- c. 40 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest buds were c. 40 mm diameter and 25 g fresh weight”
t0“Brussels sprouts”
Claim · model-written summary
The largest buds weighed 25 g fresh weight.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- fresh weighte0
- Value
- 25 ge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest buds were c. 40 mm diameter and 25 g fresh weight”
t0“Brussels sprouts”
Claim · model-written summary
Bud size increased from the stem base to nodes 20–40 and then decreased toward the apex.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- Bud sizee0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bud size increased from the base of the stem upwards to between the 20th and 40th nodes and then decreased towards the apex”
t0“Brussels sprouts”
Claim · model-written summary
Nodes 20–40 produced about 40–45% of total bud yield.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- total bud yielde0
- Value
- c. 40–45%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nodes 20–40 (20% of the total) produced c. 40–45% of total bud yield”
t0“Brussels sprouts”
Claim · model-written summary
Largest buds occurred in axils of the largest leaves.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Organ / stage
- largest leavese0
- Outcome
- largest budse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the largest buds were in the axils of the largest leaves”
t0“Brussels sprouts”
Claim · model-written summary
Bud fresh weight was closely related to size and volume.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Organ / stage
- bude0
- Outcome
- bud fresh weighte0
- Value
- r 2 ≥ 0·995e0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were close relationships between bud fresh weight and size, bud fresh weight and size, bud fresh weight and volume and log 10 bud fresh weight and log 10 bud size ( r 2 ≥ 0·995)”
t0“Brussels sprouts”
Claim · model-written summary
Bud density was about 0.8.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- density of budse0
- Value
- c. 0·8e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The density of buds was c. 0·8”
t0“Brussels sprouts”
Claim · model-written summary
Bud fresh weight doubled per 5 mm increase in diameter.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Organ / stage
- bude0
- Outcome
- bud fresh weighte0
- Direction
- doublede0
- Value
- 5 mme0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“bud fresh weight doubled for each 5 mm increase in bud diameter”
t0“Brussels sprouts”
Claim · model-written summary
Current canopy photosynthesis apparently supplied most assimilates for bud growth.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- bud growthe0
- Qualifier
- Current photosynthesis of the leaf canopye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Current photosynthesis of the leaf canopy was apparently the major source of assimilates for bud growth”
t0“Brussels sprouts”
Claim · model-written summary
Bud growth was mainly supported by subtending leaves according to C 14 tracing.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Organ / stage
- subtending leavese0
- Outcome
- growth of individual budse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A C 14 tracing experiment suggested that growth of individual buds was mainly supported by their subtending leaves”
t0“Brussels sprouts”
Claim · model-written summary
No evidence supported dry matter re-translocation from dying leaves or stems to buds.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- re-translocation of dry mattere0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was no evidence of re-translocation of dry matter from dying leaves or the stems to buds”
t0“Brussels sprouts”
Claim · model-written summary
No substantial dry matter production by buds was found.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- substantial production of dry matter by the buds themselvese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“or of substantial production of dry matter by the buds themselves”
e1“There was no evidence”
t0“Brussels sprouts”
Claim · model-written summary
Bud photosynthesis was about 10% of leaf photosynthesis.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- bud photosynthesise0
- Direction
- onlye0
- Value
- about 10%e0
- Comparator
- rate of leavese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rates of bud photosynthesis were only about 10% of the rate of leaves”
t0“Brussels sprouts”
Claim · model-written summary
Late growth of buds at low nodes was probably mainly from water uptake.
- Taxon
- Brussels sproutsBrassica oleracea var. gemmiferat0
- Outcome
- continued increase in bud fresh weight and sizee0
- Qualifier
- water uptake rather than dry matter accumulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The continued increase in bud fresh weight and size at the lowest nodes when leaves were senescing rapidly and after they had abscissed was probably mainly the result of water uptake rather than dry matter accumulation”
t0“Brussels sprouts”