Abstract
The effects of shading on photosynthetic and fluorescent characteristics of soybean seedlings were studied under maize-soybean relay cropping and monoculture.The results showed that under relay cropping condition,there were increases of chlorophyll content,total-chlorophyll/carotenoids[Chl(a+b)/Car] ratios,ratio of intercellular to ambient CO2,water-use efficiency,minimal fluorescence(Fo),photochemical efficiency of PSⅡin the light(Fv′/Fm′) and the actual photochemical efficiency of PSⅡ in the light(ΦPSⅡ),although there were decrease of Chla/b ratios,carotenoids,net photosynthesis rate(Pn),stomata conductance(Gs),stomata limitation(Ls),transpiration rate(Tr),maximal photochemical efficiency of PSⅡ in the dark(Fv/Fm),photosynthetic active fluorescence quenching(qP) and nonphochemical fluorescence quenching(NPQ).Poor light led to lower weight of dry matter accumulation in maize-soybean relay cropping.The dry matter accumulation was highly significantly correlated to Pn.In shading tolerance soybean cultivars such as Gongxuan 1 and Nandou 12,there were less Pn decreasing,more Chlb,Car and Fo,and higher Fv/Fm.
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Claims 13
Claim · model-written summary
Relay cropping increased chlorophyll content and Chl(a+b)/Car ratio of soybean seedlings relative to monoculture
- Taxon
- soybean
Glycine maxe0 - Treatment
- relay cropping conditione1
- Outcome
- chlorophyll content,total-chlorophyll/carotenoids[Chl(a+b)/Car] ratiose1
- Direction
- increasese1
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of shading on photosynthetic and fluorescent characteristics of soybean seedlings were studied under maize-soybean relay cropping and monoculture”
e1“under relay cropping condition,there were increases of chlorophyll content,total-chlorophyll/carotenoids[Chl(a+b)/Car] ratios,ratio of intercellular to ambient CO2,water-use efficiency,minimal fluorescence(Fo),photochemical efficiency of PSⅡin the light(Fv′/Fm′) and the actual photochemical efficiency of PSⅡ in the light(ΦPSⅡ)”
Claim · model-written summary
Relay cropping increased the ratio of intercellular to ambient CO2 and water-use efficiency of soybean seedlings relative to monoculture
- Taxon
- soybeanGlycine maxe0
- Treatment
- relay cropping conditione1
- Outcome
- ratio of intercellular to ambient CO2,water-use efficiencye1
- Direction
- increasese1
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of shading on photosynthetic and fluorescent characteristics of soybean seedlings were studied under maize-soybean relay cropping and monoculture”
e1“under relay cropping condition,there were increases of chlorophyll content,total-chlorophyll/carotenoids[Chl(a+b)/Car] ratios,ratio of intercellular to ambient CO2,water-use efficiency,minimal fluorescence(Fo),photochemical efficiency of PSⅡin the light(Fv′/Fm′) and the actual photochemical efficiency of PSⅡ in the light(ΦPSⅡ)”
Claim · model-written summary
Relay cropping increased minimal fluorescence (Fo) and photochemical efficiency (Fv′/Fm′) of soybean seedlings relative to monoculture
- Taxon
- soybeanGlycine maxe0
- Treatment
- relay cropping conditione1
- Outcome
- minimal fluorescence(Fo),photochemical efficiency of PSⅡin the light(Fv′/Fm′)e1
- Direction
- increasese1
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of shading on photosynthetic and fluorescent characteristics of soybean seedlings were studied under maize-soybean relay cropping and monoculture”
e1“under relay cropping condition,there were increases of chlorophyll content,total-chlorophyll/carotenoids[Chl(a+b)/Car] ratios,ratio of intercellular to ambient CO2,water-use efficiency,minimal fluorescence(Fo),photochemical efficiency of PSⅡin the light(Fv′/Fm′) and the actual photochemical efficiency of PSⅡ in the light(ΦPSⅡ)”
Claim · model-written summary
Relay cropping increased the actual photochemical efficiency of PSII (ΦPSII) of soybean seedlings relative to monoculture
- Taxon
- soybeanGlycine maxe0
- Treatment
- relay cropping conditione1
- Outcome
- the actual photochemical efficiency of PSⅡ in the light(ΦPSⅡ)e1
- Direction
- increasese1
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of shading on photosynthetic and fluorescent characteristics of soybean seedlings were studied under maize-soybean relay cropping and monoculture”
e1“under relay cropping condition,there were increases of chlorophyll content,total-chlorophyll/carotenoids[Chl(a+b)/Car] ratios,ratio of intercellular to ambient CO2,water-use efficiency,minimal fluorescence(Fo),photochemical efficiency of PSⅡin the light(Fv′/Fm′) and the actual photochemical efficiency of PSⅡ in the light(ΦPSⅡ)”
Claim · model-written summary
Relay cropping decreased Chla/b ratios and carotenoids of soybean seedlings relative to monoculture
- Taxon
- soybeanGlycine maxe0
- Treatment
- relay cropping conditione1
- Outcome
- Chla/b ratios,carotenoidse2
- Direction
- decreasee2
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of shading on photosynthetic and fluorescent characteristics of soybean seedlings were studied under maize-soybean relay cropping and monoculture”
e2“although there were decrease of Chla/b ratios,carotenoids,net photosynthesis rate(Pn),stomata conductance(Gs),stomata limitation(Ls),transpiration rate(Tr),maximal photochemical efficiency of PSⅡ in the dark(Fv/Fm),photosynthetic active fluorescence quenching(qP) and nonphochemical fluorescence quenching(NPQ)”
e1“under relay cropping condition,there were increases of chlorophyll content,total-chlorophyll/carotenoids[Chl(a+b)/Car] ratios,ratio of intercellular to ambient CO2,water-use efficiency,minimal fluorescence(Fo),photochemical efficiency of PSⅡin the light(Fv′/Fm′) and the actual photochemical efficiency of PSⅡ in the light(ΦPSⅡ)”
Claim · model-written summary
Relay cropping decreased net photosynthesis rate, stomata conductance and stomata limitation of soybean seedlings relative to monoculture
- Taxon
- soybeanGlycine maxe0
- Treatment
- relay cropping conditione1
- Outcome
- net photosynthesis rate(Pn),stomata conductance(Gs),stomata limitation(Ls)e2
- Direction
- decreasee2
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of shading on photosynthetic and fluorescent characteristics of soybean seedlings were studied under maize-soybean relay cropping and monoculture”
e2“although there were decrease of Chla/b ratios,carotenoids,net photosynthesis rate(Pn),stomata conductance(Gs),stomata limitation(Ls),transpiration rate(Tr),maximal photochemical efficiency of PSⅡ in the dark(Fv/Fm),photosynthetic active fluorescence quenching(qP) and nonphochemical fluorescence quenching(NPQ)”
e1“under relay cropping condition,there were increases of chlorophyll content,total-chlorophyll/carotenoids[Chl(a+b)/Car] ratios,ratio of intercellular to ambient CO2,water-use efficiency,minimal fluorescence(Fo),photochemical efficiency of PSⅡin the light(Fv′/Fm′) and the actual photochemical efficiency of PSⅡ in the light(ΦPSⅡ)”
Claim · model-written summary
Relay cropping decreased transpiration rate and maximal photochemical efficiency (Fv/Fm) of soybean seedlings relative to monoculture
- Taxon
- soybeanGlycine maxe0
- Treatment
- relay cropping conditione1
- Outcome
- transpiration rate(Tr),maximal photochemical efficiency of PSⅡ in the dark(Fv/Fm)e2
- Direction
- decreasee2
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of shading on photosynthetic and fluorescent characteristics of soybean seedlings were studied under maize-soybean relay cropping and monoculture”
e2“although there were decrease of Chla/b ratios,carotenoids,net photosynthesis rate(Pn),stomata conductance(Gs),stomata limitation(Ls),transpiration rate(Tr),maximal photochemical efficiency of PSⅡ in the dark(Fv/Fm),photosynthetic active fluorescence quenching(qP) and nonphochemical fluorescence quenching(NPQ)”
e1“under relay cropping condition,there were increases of chlorophyll content,total-chlorophyll/carotenoids[Chl(a+b)/Car] ratios,ratio of intercellular to ambient CO2,water-use efficiency,minimal fluorescence(Fo),photochemical efficiency of PSⅡin the light(Fv′/Fm′) and the actual photochemical efficiency of PSⅡ in the light(ΦPSⅡ)”
Claim · model-written summary
Relay cropping decreased photosynthetic active fluorescence quenching and nonphotochemical fluorescence quenching of soybean seedlings relative to monoculture
- Taxon
- soybeanGlycine maxe0
- Treatment
- relay cropping conditione1
- Outcome
- photosynthetic active fluorescence quenching(qP) and nonphochemical fluorescence quenching(NPQ)e2
- Direction
- decreasee2
- Comparator
- monoculturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of shading on photosynthetic and fluorescent characteristics of soybean seedlings were studied under maize-soybean relay cropping and monoculture”
e2“although there were decrease of Chla/b ratios,carotenoids,net photosynthesis rate(Pn),stomata conductance(Gs),stomata limitation(Ls),transpiration rate(Tr),maximal photochemical efficiency of PSⅡ in the dark(Fv/Fm),photosynthetic active fluorescence quenching(qP) and nonphochemical fluorescence quenching(NPQ)”
e1“under relay cropping condition,there were increases of chlorophyll content,total-chlorophyll/carotenoids[Chl(a+b)/Car] ratios,ratio of intercellular to ambient CO2,water-use efficiency,minimal fluorescence(Fo),photochemical efficiency of PSⅡin the light(Fv′/Fm′) and the actual photochemical efficiency of PSⅡ in the light(ΦPSⅡ)”
Claim · model-written summary
Poor light under maize-soybean relay cropping led to lower dry matter accumulation
- Taxon
- soybeanGlycine maxe0
- Treatment
- Poor lighte3
- Outcome
- weight of dry matter accumulatione3
- Direction
- lowere3
- Setting
- maize-soybean relay croppinge3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of shading on photosynthetic and fluorescent characteristics of soybean seedlings were studied under maize-soybean relay cropping and monoculture”
e3“Poor light led to lower weight of dry matter accumulation in maize-soybean relay cropping”
Claim · model-written summary
Dry matter accumulation of soybean was highly significantly correlated with net photosynthesis rate
- Taxon
- soybeanGlycine maxe0
- Outcome
- dry matter accumulatione4
- Qualifier
- highly significantly correlated to Pne4
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The effects of shading on photosynthetic and fluorescent characteristics of soybean seedlings were studied under maize-soybean relay cropping and monoculture”
e4“The dry matter accumulation was highly significantly correlated to Pn”
Claim · model-written summary
Shading-tolerant soybean cultivars showed less decrease of net photosynthesis rate
- Taxon
- soybeanGlycine maxe5
- Material
- Gongxuan 1 and Nandou 12e5
- Outcome
- Pn decreasinge5
- Direction
- lesse5
- Qualifier
- shading tolerancee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“In shading tolerance soybean cultivars such as Gongxuan 1 and Nandou 12,there were less Pn decreasing,more Chlb,Car and Fo,and higher Fv/Fm”
Claim · model-written summary
Shading-tolerant soybean cultivars showed more chlorophyll b, carotenoids and Fo
- Taxon
- soybeanGlycine maxe5
- Material
- Gongxuan 1 and Nandou 12e5
- Outcome
- Chlb,Car and Foe5
- Direction
- moree5
- Qualifier
- shading tolerancee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“In shading tolerance soybean cultivars such as Gongxuan 1 and Nandou 12,there were less Pn decreasing,more Chlb,Car and Fo,and higher Fv/Fm”
Claim · model-written summary
Shading-tolerant soybean cultivars showed higher Fv/Fm
- Taxon
- soybeanGlycine maxe5
- Material
- Gongxuan 1 and Nandou 12e5
- Outcome
- Fv/Fme5
- Direction
- highere5
- Qualifier
- shading tolerancee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“In shading tolerance soybean cultivars such as Gongxuan 1 and Nandou 12,there were less Pn decreasing,more Chlb,Car and Fo,and higher Fv/Fm”
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