Abstract
Soybean [ Glycine max (L.) Merr.] genotypes have been identified that show differential sensitivity to light quality. The use of different lamp types emitting light of different quality changed flowering responses to long days. The objective of this study was to investigate the flowering response of three photoperiod‐sensitivity loci to long days of various light qualities. ‘Harosoy’ near‐isogenic lines were grown under 20‐h‐long days of different light qualities, as measured by the bichromatic ratio of red to far‐red quanta (R:FR), and under light quality gradients. Generally, the photoperiodic response was greater, i.e., later flowering, with decreased R:FR. The E l allele was most sensitive to light quality and required an R:FR approximating that of natural daylight for response to long days. The E 3 allele was the least sensitive, and the E 4 allele showed intermediate sensitivity to light quality. The earliest‐flowering near‐isogenic line ( e 1 e 3 e 4 ), previously found to be insensitive to long day length, showed sensitivity to long days of low R:FR light. Long days of high R:FR light were not effective in delaying flowering for some genotypes. Sensing the R:FR ratio is the function of phytochrome in light‐grown plants. The three loci studied in this work responded differentially to changes in R:FR, suggesting either a close relationship between soybean E alleles and phytochrome or the possibility that some photoperiod‐sensitivity loci are part of the phytochrome family of genes.
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Claims 7
Claim · model-written summary
Flowering was generally later with decreased red:far-red ratio.
- Taxon
- Soybean
Glycine maxt0 - Outcome
- later floweringe0
- Direction
- latere0
- Setting
- decreased R:FRe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“photoperiodic response was greater, i.e., later flowering, with decreased R:FR”
t0“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
t1“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
Claim · model-written summary
The E l allele was most sensitive to light quality and needed near-daylight R:FR to respond to long days.
- Taxon
- SoybeanGlycine maxt0
- Gene
- E l allelee0
- Outcome
- most sensitive to light qualitye0
- Qualifier
- R:FR approximating that of natural daylighte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The E l allele was most sensitive to light quality and required an R:FR approximating that of natural daylight for response to long days”
t0“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
t1“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
Claim · model-written summary
The E 3 allele was least sensitive to light quality.
- Taxon
- SoybeanGlycine maxt0
- Gene
- E 3 allelee0
- Outcome
- least sensitivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The E 3 allele was the least sensitive”
t0“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
t1“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
Claim · model-written summary
The E 4 allele had intermediate light-quality sensitivity.
- Taxon
- SoybeanGlycine maxt0
- Gene
- E 4 allelee0
- Outcome
- intermediate sensitivity to light qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the E 4 allele showed intermediate sensitivity to light quality”
t0“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
t1“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
Claim · model-written summary
The e 1 e 3 e 4 line responded to long days of low R:FR light.
- Taxon
- SoybeanGlycine maxt0
- Material
- e 1 e 3 e 4e0
- Treatment
- long days of low R:FR lighte0
- Outcome
- sensitivity to long dayse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“earliest‐flowering near‐isogenic line ( e 1 e 3 e 4 ), previously found to be insensitive to long day length, showed sensitivity to long days of low R:FR light”
t0“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
t1“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
Claim · model-written summary
High R:FR long days did not delay flowering for some genotypes.
- Taxon
- SoybeanGlycine maxt0
- Treatment
- Long days of high R:FR lighte0
- Outcome
- delaying floweringe0
- Direction
- not effectivee0
- Qualifier
- some genotypese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Long days of high R:FR light were not effective in delaying flowering for some genotypes”
t0“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
t1“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
Claim · model-written summary
The three loci responded differently to R:FR changes, suggesting a relationship to phytochrome.
- Taxon
- SoybeanGlycine maxt0
- Gene
- soybean E allelese0
- Outcome
- responded differentially to changes in R:FRe0
- Qualifier
- close relationship between soybean E alleles and phytochromee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The three loci studied in this work responded differentially to changes in R:FR, suggesting either a close relationship between soybean E alleles and phytochrome or the possibility that some photoperiod‐sensitivity loci are part of the phytochrome family of genes”
t0“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
t1“Soybean Photoperiod‐Sensitivity Loci Respond Differentially to Light Quality”
The same questions in other papers
light · phenology · Glycine max (soybean)Positive and negative results
9 papers in the same direction as this paper · 11 in the opposite direction
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