Abstract
At an optimal germination temperature loss of viability in wheat seed is reflected in reduced levels of nucleoside triphosphates and nucleotide sugars in the embryo compared to the levels found in high viability embryos during the early hours of imbibition. These differences are magnified on germination at 10° C and are accompanied by a greatly reduced rate of protein synthesis in embryos of low viability compared with the corresponding rate in embryos of high viability. Loss of vigour precedes loss of viability in seed but differences in biochemical parameters between high and medium vigour seed do not become apparent unless germination under stress conditions, e. g. low temperature, occurs. Under these stress conditions, wheat seed of reduced vigour can be distinguished from high vigour seed lots of similar viability by the decreased levels of nucleotides and nucleotide sugars found in embryos from reduced vigour seed lots during the early hours of imbibition and by reduced rates of protein synthesis in these embryos during this same period. Nucleotide analysis is a potentially useful method for rapid assessment of the viability or vigour of a seed lot.
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Claims 7
Claim · model-written summary
At optimal germination temperature, low-viability wheat embryos had reduced levels of nucleoside triphosphates and nucleotide sugars compared with high-viability embryos in early imbibition.
- Taxon
- wheat
Triticum aestivume0 - Organ / stage
- embryoe0
- Outcome
- levels of nucleoside triphosphates and nucleotide sugarse0
- Direction
- reducede0
- Qualifier
- during the early hours of imbibitione0
- Comparator
- high viability embryose0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At an optimal germination temperature loss of viability in wheat seed is reflected in reduced levels of nucleoside triphosphates and nucleotide sugars in the embryo compared to the levels found in high viability embryos during the early hours of imbibition”
Claim · model-written summary
Germination at 10° C magnified the reduction in the rate of protein synthesis in low-viability wheat embryos compared with high-viability embryos.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- embryose1
- Treatment
- germination at 10° Ce1
- Outcome
- rate of protein synthesise1
- Direction
- greatly reducede1
- Comparator
- embryos of high viabilitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At an optimal germination temperature loss of viability in wheat seed is reflected in reduced levels of nucleoside triphosphates and nucleotide sugars in the embryo compared to the levels found in high viability embryos during the early hours of imbibition”
e1“These differences are magnified on germination at 10° C and are accompanied by a greatly reduced rate of protein synthesis in embryos of low viability compared with the corresponding rate in embryos of high viability”
Claim · model-written summary
Under stress conditions, reduced-vigour wheat seed lots had decreased levels of nucleotides and nucleotide sugars in embryos compared with high-vigour lots of similar viability.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- embryose1
- Treatment
- stress conditionse1
- Outcome
- levels of nucleotides and nucleotide sugarse1
- Direction
- decreasede1
- Comparator
- high vigour seed lots of similar viabilitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At an optimal germination temperature loss of viability in wheat seed is reflected in reduced levels of nucleoside triphosphates and nucleotide sugars in the embryo compared to the levels found in high viability embryos during the early hours of imbibition”
e1“Under these stress conditions, wheat seed of reduced vigour can be distinguished from high vigour seed lots of similar viability by the decreased levels of nucleotides and nucleotide sugars found in embryos from reduced vigour seed lots during the early hours of imbibition and by reduced rates of protein synthesis in these embryos during this same period”
Claim · model-written summary
Under stress conditions, reduced-vigour wheat embryos had reduced rates of protein synthesis compared with high-vigour lots of similar viability.
- Taxon
- wheatTriticum aestivume0
- Organ / stage
- embryose1
- Treatment
- stress conditionse1
- Outcome
- rates of protein synthesise1
- Direction
- reducede1
- Comparator
- high vigour seed lots of similar viabilitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At an optimal germination temperature loss of viability in wheat seed is reflected in reduced levels of nucleoside triphosphates and nucleotide sugars in the embryo compared to the levels found in high viability embryos during the early hours of imbibition”
e1“Under these stress conditions, wheat seed of reduced vigour can be distinguished from high vigour seed lots of similar viability by the decreased levels of nucleotides and nucleotide sugars found in embryos from reduced vigour seed lots during the early hours of imbibition and by reduced rates of protein synthesis in these embryos during this same period”
Claim · model-written summary
Loss of vigour precedes loss of viability in wheat seed.
- Taxon
- wheatTriticum aestivume0
- Outcome
- Loss of vigoure1
- Direction
- precedese1
- Qualifier
- loss of viabilitye1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At an optimal germination temperature loss of viability in wheat seed is reflected in reduced levels of nucleoside triphosphates and nucleotide sugars in the embryo compared to the levels found in high viability embryos during the early hours of imbibition”
e1“Loss of vigour precedes loss of viability in seed but differences in biochemical parameters between high and medium vigour seed do not become apparent unless germination under stress conditions, e. g. low temperature, occurs”
Claim · model-written summary
Biochemical differences between high- and medium-vigour wheat seed did not appear unless germination occurred under stress conditions.
- Taxon
- wheatTriticum aestivume0
- Treatment
- germination under stress conditionse1
- Outcome
- differences in biochemical parameterse1
- Direction
- do not become apparente1
- Comparator
- high and medium vigour seede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At an optimal germination temperature loss of viability in wheat seed is reflected in reduced levels of nucleoside triphosphates and nucleotide sugars in the embryo compared to the levels found in high viability embryos during the early hours of imbibition”
e1“Loss of vigour precedes loss of viability in seed but differences in biochemical parameters between high and medium vigour seed do not become apparent unless germination under stress conditions, e. g. low temperature, occurs”
Claim · model-written summary
Nucleotide analysis is a potentially useful method for rapid assessment of the viability or vigour of wheat seed lots.
- Taxon
- wheatTriticum aestivume0
- Outcome
- rapid assessment of the viability or vigour of a seed lote1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At an optimal germination temperature loss of viability in wheat seed is reflected in reduced levels of nucleoside triphosphates and nucleotide sugars in the embryo compared to the levels found in high viability embryos during the early hours of imbibition”
e1“Nucleotide analysis is a potentially useful method for rapid assessment of the viability or vigour of a seed lot”
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See all 25 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.