Abstract
SUMMARY1. The effect of ageing on seed viability, seedling growth and cellular damage was studies in Triticale seeds (2 n=56) of various ages. Old seeds generally showed reduced viability, slow growth rate accompanied by variable amount of chromosomal damage.2. No linear relationship could be found between the period of ageing and deleterious effects but after an initial lag period effects increased in later year significantly.3. To a treatment with EMS old seeds showed greater sensitivity than the fresh ones. Positive relation was found between chromosomal aberrations and loss of viability on one hand and period of ageing and chromosomal damage on the other.4. The death of embryo causing the loss of viability is regarded to be due to production and accumulation of nuclear damage in which respiratory waste products, normal metabolites, etc. play a direct role.5. It is indicated that effects have taken place during the period of ageing and are present before the onset of germination.
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Claims 11
Claim · model-written summary
Old Triticale seeds generally had reduced viability.
- Taxon
- Triticale
×Triticosecalee1 - Outcome
- viabilitye0
- Direction
- reducede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Old seeds generally showed reduced viability”
e1“Triticale seeds (2 n=56)”
Claim · model-written summary
Old Triticale seeds generally had a slow growth rate.
- Taxon
- Triticale×Triticosecalee1
- Outcome
- growth ratee0
- Direction
- slowe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“slow growth rate”
e1“Triticale seeds (2 n=56)”
Claim · model-written summary
Old Triticale seeds showed variable chromosomal damage.
- Taxon
- Triticale×Triticosecalee1
- Outcome
- chromosomal damagee0
- Qualifier
- variable amounte0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“variable amount of chromosomal damage”
e1“Triticale seeds (2 n=56)”
Claim · model-written summary
The period of ageing had no linear relationship with deleterious effects in Triticale seeds.
- Taxon
- Triticale×Triticosecalee1
- Treatment
- period of ageinge0
- Outcome
- deleterious effectse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No linear relationship could be found between the period of ageing and deleterious effects”
e1“Triticale seeds (2 n=56)”
Claim · model-written summary
Deleterious effects in Triticale seeds increased significantly in later years after an initial lag period.
- Taxon
- Triticale×Triticosecalee1
- Treatment
- period of ageinge2
- Outcome
- effectse0
- Direction
- increasede0
- Qualifier
- after an initial lag periode0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“after an initial lag period effects increased in later year significantly”
e1“Triticale seeds (2 n=56)”
e2“No linear relationship could be found between the period of ageing and deleterious effects”
Claim · model-written summary
Old Triticale seeds showed greater sensitivity to EMS than fresh seeds.
- Taxon
- Triticale×Triticosecalee1
- Treatment
- treatment with EMSe0
- Outcome
- sensitivitye0
- Direction
- greatere0
- Comparator
- fresh onese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“To a treatment with EMS old seeds showed greater sensitivity than the fresh ones”
e1“Triticale seeds (2 n=56)”
Claim · model-written summary
Chromosomal aberrations were positively related to loss of viability in Triticale seeds.
- Taxon
- Triticale×Triticosecalee1
- Organ / stage
- seedse1
- Outcome
- loss of viabilitye0
- Direction
- Positive relatione0
- Qualifier
- chromosomal aberrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Positive relation was found between chromosomal aberrations and loss of viability”
e1“Triticale seeds (2 n=56)”
Claim · model-written summary
The period of ageing was positively related to chromosomal damage in Triticale seeds.
- Taxon
- Triticale×Triticosecalee2
- Treatment
- period of ageinge0
- Outcome
- chromosomal damagee0
- Direction
- Positive relatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“period of ageing and chromosomal damage”
e1“Positive relation was found between chromosomal aberrations and loss of viability on one hand and period of ageing and chromosomal damage on the other”
e2“Triticale seeds (2 n=56)”
Claim · model-written summary
The authors attributed embryo death and viability loss in aged Triticale seeds to accumulated nuclear damage.
- Taxon
- Triticale×Triticosecalee1
- Organ / stage
- embryoe0
- Outcome
- loss of viabilitye0
- Qualifier
- production and accumulation of nuclear damagee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The death of embryo causing the loss of viability is regarded to be due to production and accumulation of nuclear damage”
e1“Triticale seeds (2 n=56)”
Claim · model-written summary
The authors suggested respiratory waste products and normal metabolites directly contribute to nuclear damage in aged Triticale seeds.
- Taxon
- Triticale×Triticosecalee2
- Compound
- respiratory waste products, normal metabolitese0
- Outcome
- nuclear damagee1
- Qualifier
- play a direct rolee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“respiratory waste products, normal metabolites, etc. play a direct role”
e1“production and accumulation of nuclear damage”
e2“Triticale seeds (2 n=56)”
Claim · model-written summary
The authors indicated that ageing effects in Triticale seeds occur before germination begins.
- Taxon
- Triticale×Triticosecalee1
- Outcome
- effectse0
- Qualifier
- before the onset of germinatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“effects have taken place during the period of ageing and are present before the onset of germination”
e1“Triticale seeds (2 n=56)”