Abstract
Effect of enhanced ultraviolet-B radiation (280-320 nm) on growth, development and yield formation in the three rice cultivars (Oryza sativa L.) under pot conditions were investigated. The results showed that enhanced ultraviolet-B radiation decreased rice height, tiller number, total leaf area and biomass, but the inhibitory rate varied in different cultivars and developmental stages. Plant height was decreased by 9.4%-12.2% in seedling stage, plant shoot and root of dry matter were decreased by 45.3%-59.8% and 54.9%-59.0% respectively in tillering period. The leaf emergence delayed, resulting in delayed time of flowering in Shanyou 63, Nanchuan and IR65600-85 by 2d, 3d and 7d, prolonged total growth period by 3d, 4d and 9d. Net photosynthesis rate of Shanyou 63, Nanchuan and IR65600-85 were decreased by 11.9%, 12.8% and 29.7%, respectively. Attributed to decreased contents of chlorophyll a, b, carotenoid and induction kinetics parameters of Fv, Fv/Fm and Fv/Fo. Effective panicle per plant, total grain number per panicle, filled grain rate and 1000-grain weight were decreased by enhanced UV-B radiation. Consequently the grain yields were reduced by 25.2%-31.1%.
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Claims 19
Claim · model-written summary
Enhanced UV-B radiation decreased rice tiller number and total leaf area.
- Taxon
- rice
Oryza sativat0 - Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- tiller number, total leaf areae0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“enhanced ultraviolet-B radiation decreased rice height, tiller number, total leaf area and biomass”
Claim · model-written summary
Enhanced UV-B radiation decreased plant height by 9.4%-12.2% in the seedling stage.
- Taxon
- riceOryza sativat0
- Organ / stage
- seedling stagee0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- Plant heighte0
- Direction
- decreasede0
- Value
- 9.4%-12.2%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“Plant height was decreased by 9.4%-12.2% in seedling stage”
Claim · model-written summary
Enhanced UV-B radiation decreased shoot dry matter by 45.3%-59.8% in the tillering period.
- Taxon
- riceOryza sativat0
- Organ / stage
- tillering periode0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- plant shoote0
- Direction
- decreasede0
- Value
- 45.3%-59.8%e0
- Qualifier
- dry mattere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“plant shoot and root of dry matter were decreased by 45.3%-59.8% and 54.9%-59.0% respectively in tillering period”
Claim · model-written summary
Enhanced UV-B radiation decreased root dry matter by 54.9%-59.0% in the tillering period.
- Taxon
- riceOryza sativat0
- Organ / stage
- tillering periode0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- root of dry mattere0
- Direction
- decreasede0
- Value
- 54.9%-59.0%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“plant shoot and root of dry matter were decreased by 45.3%-59.8% and 54.9%-59.0% respectively in tillering period”
Claim · model-written summary
Enhanced UV-B radiation delayed leaf emergence.
- Taxon
- riceOryza sativat0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- leaf emergencee0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“The leaf emergence delayed”
Claim · model-written summary
Enhanced UV-B radiation delayed flowering of Shanyou 63 by 2 d.
- Taxon
- riceOryza sativat0
- Material
- Shanyou 63e0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- time of floweringe0
- Direction
- delayede0
- Value
- 2de0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“resulting in delayed time of flowering in Shanyou 63, Nanchuan and IR65600-85 by 2d, 3d and 7d, prolonged total growth period by 3d, 4d and 9d”
Claim · model-written summary
Enhanced UV-B radiation delayed flowering of Nanchuan by 3 d.
- Taxon
- riceOryza sativat0
- Material
- Nanchuane0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- time of floweringe0
- Direction
- delayede0
- Value
- 3de0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“resulting in delayed time of flowering in Shanyou 63, Nanchuan and IR65600-85 by 2d, 3d and 7d, prolonged total growth period by 3d, 4d and 9d”
Claim · model-written summary
Enhanced UV-B radiation delayed flowering of IR65600-85 by 7 d.
- Taxon
- riceOryza sativat0
- Material
- IR65600-85e0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- time of floweringe0
- Direction
- delayede0
- Value
- 7de0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“resulting in delayed time of flowering in Shanyou 63, Nanchuan and IR65600-85 by 2d, 3d and 7d, prolonged total growth period by 3d, 4d and 9d”
Claim · model-written summary
Enhanced UV-B radiation prolonged the total growth period of Shanyou 63 by 3 d.
- Taxon
- riceOryza sativat0
- Material
- Shanyou 63e0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- total growth periode0
- Direction
- prolongede0
- Value
- 3de0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“resulting in delayed time of flowering in Shanyou 63, Nanchuan and IR65600-85 by 2d, 3d and 7d, prolonged total growth period by 3d, 4d and 9d”
Claim · model-written summary
Enhanced UV-B radiation prolonged the total growth period of Nanchuan by 4 d.
- Taxon
- riceOryza sativat0
- Material
- Nanchuane0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- total growth periode0
- Direction
- prolongede0
- Value
- 4de0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“resulting in delayed time of flowering in Shanyou 63, Nanchuan and IR65600-85 by 2d, 3d and 7d, prolonged total growth period by 3d, 4d and 9d”
Claim · model-written summary
Enhanced UV-B radiation prolonged the total growth period of IR65600-85 by 9 d.
- Taxon
- riceOryza sativat0
- Material
- IR65600-85e0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- total growth periode0
- Direction
- prolongede0
- Value
- 9de0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“resulting in delayed time of flowering in Shanyou 63, Nanchuan and IR65600-85 by 2d, 3d and 7d, prolonged total growth period by 3d, 4d and 9d”
Claim · model-written summary
Enhanced UV-B radiation decreased net photosynthesis rate of Shanyou 63 by 11.9%.
- Taxon
- riceOryza sativat0
- Material
- Shanyou 63e0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- Net photosynthesis ratee0
- Direction
- decreasede0
- Value
- 11.9%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“Net photosynthesis rate of Shanyou 63, Nanchuan and IR65600-85 were decreased by 11.9%, 12.8% and 29.7%, respectively”
Claim · model-written summary
Enhanced UV-B radiation decreased net photosynthesis rate of Nanchuan by 12.8%.
- Taxon
- riceOryza sativat0
- Material
- Nanchuane0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- Net photosynthesis ratee0
- Direction
- decreasede0
- Value
- 12.8%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“Net photosynthesis rate of Shanyou 63, Nanchuan and IR65600-85 were decreased by 11.9%, 12.8% and 29.7%, respectively”
Claim · model-written summary
Enhanced UV-B radiation decreased net photosynthesis rate of IR65600-85 by 29.7%.
- Taxon
- riceOryza sativat0
- Material
- IR65600-85e0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- Net photosynthesis ratee0
- Direction
- decreasede0
- Value
- 29.7%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“Net photosynthesis rate of Shanyou 63, Nanchuan and IR65600-85 were decreased by 11.9%, 12.8% and 29.7%, respectively”
Claim · model-written summary
The decline in photosynthesis is attributed to decreased chlorophyll a, b and carotenoid contents and decreased induction kinetics parameters Fv, Fv/Fm and Fv/Fo.
- Taxon
- riceOryza sativat0
- Outcome
- decreased contents of chlorophyll a, b, carotenoide0
- Qualifier
- induction kinetics parameters of Fv, Fv/Fm and Fv/Foe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“Attributed to decreased contents of chlorophyll a, b, carotenoid and induction kinetics parameters of Fv, Fv/Fm and Fv/Fo”
Claim · model-written summary
Enhanced UV-B radiation decreased effective panicles per plant and total grain number per panicle.
- Taxon
- riceOryza sativat0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- Effective panicle per plant, total grain number per paniclee0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“Effective panicle per plant, total grain number per panicle, filled grain rate and 1000-grain weight were decreased by enhanced UV-B radiation”
Claim · model-written summary
Enhanced UV-B radiation decreased filled grain rate and 1000-grain weight.
- Taxon
- riceOryza sativat0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- filled grain rate and 1000-grain weighte0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“Effective panicle per plant, total grain number per panicle, filled grain rate and 1000-grain weight were decreased by enhanced UV-B radiation”
Claim · model-written summary
Enhanced UV-B radiation reduced grain yields by 25.2%-31.1%.
- Taxon
- riceOryza sativat0
- Treatment
- enhanced ultraviolet-B radiationt0
- Outcome
- grain yieldse0
- Direction
- reducede0
- Value
- 25.2%-31.1%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“Consequently the grain yields were reduced by 25.2%-31.1%”
Claim · model-written summary
The inhibitory rate of enhanced UV-B radiation varied among rice cultivars and developmental stages.
- Taxon
- riceOryza sativat0
- Outcome
- inhibitory ratee0
- Qualifier
- different cultivars and developmental stagese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“enhanced ultraviolet-B radiation on growth development and yield formation in rice”
e0“the inhibitory rate varied in different cultivars and developmental stages”
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