Abstract
Non-heading Chinese cabbage (cabbage) is an essential green leafy vegetable, and bolting and flowering are necessary for reproduction. However, further research is needed to study the effect of photoperiod on the bolting and flowering of cabbage, particularly on the development of the stem. In this study, we performed phenotypic analysis and measured endogenous gibberellin levels in the cabbage. We carried out these experiments under four different photoperiodic treatments, 12 h (light)/12 h (dark), 14 h (light)/10 h (dark), 16 h (light)/8 h (dark), and 18 h (light)/6 h (dark). The results showed that the time of bolting and flowering gradually decreased with increasing light duration. The development of stems was optimal under the 16 h (light)/8 h (dark) photoperiod treatment, and the same result was obtained via cytological observation. In addition, the changes in the endogenous gibberellin3 (GA3) content under different photoperiodic treatments were consistent with the development of stems and peaked at 16 h (light)/8 h (dark). At the same time, qRT-PCR analysis showed that the relative expression of the key gibberellin synthase genes, BcGA3ox2 and BcGA20ox2, exhibited upregulation. When treated with exogenous GA3 and its synthesis inhibitor, paclobutrazol (PAC), exogenous gibberellins significantly promoted bolting; conversely, gibberellin inhibitors suppressed the bolting, flowering, and stem elongation of cabbage. Therefore, the photoperiod may regulate cabbage bolting by regulating endogenous GA3.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 6
Claim · model-written summary
Longer light duration shortened time to bolting and flowering.
- Taxon
- cabbage
Brassica oleracea var. capitatat0 - Treatment
- light duratione0
- Outcome
- time of bolting and floweringe0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“time of bolting and flowering gradually decreased with increasing light duration”
t0“cabbage”
Claim · model-written summary
Stem development was optimal under a 16 h light/8 h dark photoperiod.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- 16 h (light)/8 h (dark) photoperiod treatmente0
- Outcome
- development of stemse0
- Direction
- optimale0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“development of stems was optimal under the 16 h (light)/8 h (dark) photoperiod treatment”
t0“cabbage”
Claim · model-written summary
GA3 content peaked under the 16 h light/8 h dark treatment.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- 16 h (light)/8 h (dark)e0
- Outcome
- endogenous gibberellin3 (GA3) contente0
- Direction
- peakede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“endogenous gibberellin3 (GA3) content under different photoperiodic treatments were consistent with the development of stems and peaked at 16 h (light)/8 h (dark)”
t0“cabbage”
Claim · model-written summary
BcGA3ox2 and BcGA20ox2 expression was upregulated.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Gene
- BcGA3ox2 and BcGA20ox2e0
- Outcome
- relative expressione0
- Direction
- upregulatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“relative expression of the key gibberellin synthase genes, BcGA3ox2 and BcGA20ox2, exhibited upregulation”
t0“cabbage”
Claim · model-written summary
Exogenous gibberellins significantly promoted bolting.
- Taxon
- cabbageBrassica oleracea var. capitatat0
- Treatment
- exogenous gibberellinse0
- Outcome
- boltinge0
- Direction
- promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“exogenous gibberellins significantly promoted bolting”
t0“cabbage”
Claim · model-written summary
Gibberellin inhibitors suppressed bolting, flowering and stem elongation.
- Taxon
- cabbageBrassica oleracea var. capitatae0
- Treatment
- gibberellin inhibitorse0
- Outcome
- bolting, flowering, and stem elongatione0
- Direction
- suppressede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“gibberellin inhibitors suppressed the bolting, flowering, and stem elongation of cabbage”
The same questions in other papers
class · growth · Brassica oleracea (wild cabbage)Positive and negative results
1 paper in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
13 papers more in this group
See all 17 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.