Abstract
Abstract Application of plant growth regulators emerges as one of the most reliable methods to enhance crop productivity and quality. However, knowledge is limited in seed quality of hybrid rice subjected to exogenous 6-Benzyladenine (6-BA) application during seed development. A 2-year experiment was conducted to investigate the effects of 6-BA treatment after pollination on seed vigor and its underlying regulatory mechanisms. Results showed that 6-BA treatment increased germination potential (GP) and vigor index (VI) of hybrid rice irrespective of cultivar and year, particularly with 50 mg/L. Consistently, seedling quality including seedling height, root length and dry weight was significantly enhanced under 6-BA treatment with 50 mg/L. Based on the results above, 50 mg/L was considered as the optimal concentration. Additionally, 6-BA treatment with 50 mg/L increased catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) activities, and it strongly induced the expression of OsAPX1 and OsCSD3 related to antioxidant enzyme activity at the early stage of seed emergence. Therefore, spraying 6-BA with 50 mg/L after pollination could be recommended as an agronomic practice for hybrid rice seed production with high seed vigor.
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Claims 6
Claim · model-written summary
6-BA increased hybrid rice germination potential and vigor index across cultivars and years, especially at 50 mg/L.
- Taxon
- hybrid rice
Oryza sativae0 - Treatment
- 6-BA treatmente0
- Outcome
- germination potential (GP) and vigor index (VI)e0
- Direction
- increasede0
- Qualifier
- irrespective of cultivar and year, particularly with 50 mg/Le0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA treatment increased germination potential (GP) and vigor index (VI) of hybrid rice irrespective of cultivar and year, particularly with 50 mg/L”
Claim · model-written summary
50 mg/L 6-BA significantly improved seedling height, root length and dry weight.
- Taxon
- hybrid riceOryza sativae1
- Treatment
- 6-BA treatment with 50 mg/Le0
- Outcome
- seedling height, root length and dry weighte0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedling height, root length and dry weight was significantly enhanced under 6-BA treatment with 50 mg/L”
e1“seed quality of hybrid rice”
Claim · model-written summary
50 mg/L 6-BA increased catalase, peroxidase and superoxide dismutase activities.
- Taxon
- hybrid riceOryza sativae1
- Treatment
- 6-BA treatment with 50 mg/Le0
- Outcome
- catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) activitiese0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA treatment with 50 mg/L increased catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) activities”
e1“seed quality of hybrid rice”
Claim · model-written summary
50 mg/L 6-BA strongly induced expression of OsAPX1 and OsCSD3 at early seed emergence.
- Taxon
- hybrid riceOryza sativae1
- Organ / stage
- early stage of seed emergencee0
- Treatment
- 6-BA treatment with 50 mg/Le0
- Gene
- OsAPX1 and OsCSD3e0
- Outcome
- expression of OsAPX1 and OsCSD3e0
- Direction
- inducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“6-BA treatment with 50 mg/L increased catalase (CAT), peroxidase (POD) and superoxide dismutase (SOD) activities, and it strongly induced the expression of OsAPX1 and OsCSD3 related to antioxidant enzyme activity at the early stage of seed emergence”
e1“seed quality of hybrid rice”
Claim · model-written summary
The authors considered 50 mg/L the optimal 6-BA concentration.
- Taxon
- hybrid riceOryza sativae1
- Outcome
- 50 mg/L was considered as the optimal concentratione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“50 mg/L was considered as the optimal concentration”
e1“seed quality of hybrid rice”
Claim · model-written summary
The authors recommend spraying 50 mg/L 6-BA after pollination to produce hybrid rice seed with high vigor.
- Taxon
- hybrid riceOryza sativae0
- Outcome
- spraying 6-BA with 50 mg/L after pollination could be recommended as an agronomic practice for hybrid rice seed production with high seed vigore0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“spraying 6-BA with 50 mg/L after pollination could be recommended as an agronomic practice for hybrid rice seed production with high seed vigor”
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See all 7 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.