Abstract
ABSTRACT Rapeseed (Brassica napus) is one of main oil crops in the world and also a potential bioenergy crop. Because of the sensitivity of Brassica napus to boron (B) deficiency and the wide distribution of low available-B soils in main areas of rapeseed production, more and more attention is being paid to the effect of B nutrition on yield and quality of rapeseed and its regulation mechanism. In this study, a field plot trial was conducted to examine the effects of B on dynamic changes of seed yield and quality formation in developing rapeseed. The results showed that B significantly increased seed yield compared with the low B control, which was attributed to an increase in the number of seeds per pod and pods per plant. During the seed development period, dry matter accumulation of seed followed a typical S-shaped curve at the two B treatments, but seed weight accumulated faster in plants supplied with sufficient B than those with low B. The dry weight of the podwall in high B treatment showed rapid increase at the early stage of seed development and decreased rapidly in later periods compared with low B. This suggested that applying B improved the accumulation of seed dry matter in early stages of seed development and substance transport from podwall to seed in later stages, which resulted in high seed yield. No significant effect of B on oil content, erucic acid and glucosinolate contents was found. However, B maintained a lower level of erucic acid and glucosinolate contents at whole seed development process and resulted in a lower ratio of erucic acid (22:1)/oleic acid (18:1) compared with that of low B treatment. These results suggested that application of B could heighten seed yield and improve oil quality for rapeseed in soils with low available B.
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Claims 10
Claim · model-written summary
Boron significantly increased seed yield relative to low boron.
- Taxon
- Brassica napus
_Brassica_napus_-_Habit.jpg?width=60)
Brassica napust0 - Treatment
- Be0
- Outcome
- seed yielde0
- Direction
- increasede0
- Comparator
- low B controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Brassica_napus_-_Habit.jpg?width=500)
Verbatim
e0“The results showed that B significantly increased seed yield compared with the low B control, which was attributed to an increase in the number of seeds per pod and pods per plant.”
t0“Brassica napus”
Claim · model-written summary
The seed yield increase was attributed to more seeds per pod and pods per plant.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- Be0
- Outcome
- number of seeds per pod and pods per plante0
- Direction
- increasee0
- Comparator
- low B controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The results showed that B significantly increased seed yield compared with the low B control, which was attributed to an increase in the number of seeds per pod and pods per plant.”
t0“Brassica napus”
Claim · model-written summary
Seed dry matter accumulation followed an S-shaped curve at both boron treatments.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- two B treatmentse0
- Outcome
- dry matter accumulation of seede0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the seed development period, dry matter accumulation of seed followed a typical S-shaped curve at the two B treatments, but seed weight accumulated faster in plants supplied with sufficient B than those with low B.”
t0“Brassica napus”
Claim · model-written summary
Seeds accumulated weight faster with sufficient boron than low boron.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- sufficient Be0
- Outcome
- seed weighte0
- Direction
- fastere0
- Comparator
- low Be0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the seed development period, dry matter accumulation of seed followed a typical S-shaped curve at the two B treatments, but seed weight accumulated faster in plants supplied with sufficient B than those with low B.”
t0“Brassica napus”
Claim · model-written summary
Podwall dry weight rose rapidly early and fell rapidly later under high boron relative to low boron.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- high B treatmente0
- Outcome
- dry weight of the podwalle0
- Direction
- rapid increasee0
- Comparator
- low Be0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dry weight of the podwall in high B treatment showed rapid increase at the early stage of seed development and decreased rapidly in later periods compared with low B.”
t0“Brassica napus”
Claim · model-written summary
The authors inferred that boron improved early seed dry matter accumulation.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- applying Be0
- Outcome
- accumulation of seed dry mattere0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This suggested that applying B improved the accumulation of seed dry matter in early stages of seed development and substance transport from podwall to seed in later stages, which resulted in high seed yield.”
t0“Brassica napus”
Claim · model-written summary
The authors inferred that boron improved late transport from podwall to seed.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- applying Be0
- Outcome
- substance transport from podwall to seede0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This suggested that applying B improved the accumulation of seed dry matter in early stages of seed development and substance transport from podwall to seed in later stages, which resulted in high seed yield.”
t0“Brassica napus”
Claim · model-written summary
Boron had no significant effect on oil, erucic acid or glucosinolate contents.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- Be0
- Outcome
- oil content, erucic acid and glucosinolate contentse0
- Direction
- No significant effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant effect of B on oil content, erucic acid and glucosinolate contents was found.”
t0“Brassica napus”
Claim · model-written summary
Boron maintained lower erucic acid and glucosinolate contents during seed development.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- Be0
- Outcome
- erucic acid and glucosinolate contentse0
- Direction
- lowere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, B maintained a lower level of erucic acid and glucosinolate contents at whole seed development process and resulted in a lower ratio of erucic acid (22:1)/oleic acid (18:1) compared with that of low B treatment.”
t0“Brassica napus”
Claim · model-written summary
Boron lowered the erucic to oleic acid ratio relative to low boron.
- Taxon
- Brassica napusBrassica napust0
- Treatment
- Be0
- Outcome
- ratio of erucic acid (22:1)/oleic acid (18:1)e0
- Direction
- lowere0
- Comparator
- low B treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“However, B maintained a lower level of erucic acid and glucosinolate contents at whole seed development process and resulted in a lower ratio of erucic acid (22:1)/oleic acid (18:1) compared with that of low B treatment.”
t0“Brassica napus”
The same questions in other papers
boron atom · quality: oil · Brassica napus (oilseed rape)Results differ
8 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- no effect
- no effect
10 papers more in this group
See all 14 papers →boron atom · yield · Brassica napus (oilseed rape)Results differ
45 papers in the same direction as this paper · 9 in the opposite direction
- positive
- negative
- no effect
51 papers more in this group
See all 55 papers →boron atom · quality: phytochemicals · Brassica napus (oilseed rape)Results agree
1 paper in the same direction as this paper
- positive
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.