Abstract
A study of the germination requirements of local populations of Dactylis glomerata from NW Spain and central Italy showed that, with the exception of one ecotype from central Italy, there was a positive germination response to alternating temperatures. With five bred varieties from the Welsh Plant Breeding Station, Aberystwyth there was no such response and constant temperatures were as effective as alternating temperatures. A low temperature treatment (2 °C) before germination at constant temperatures, also increased germination of the Spanish and Italian populations with the exception of the ecotype from central Italy. Increasing air temperature from 15 °C to 25 °C during seed development increased subsequent germination at constant and alternating temperatures. The relationship between the mean July temperature and the germination of seven stocks of a diploid cocksfoot from NW Spain suggested that, under field conditions also, air temperature at the time of seed development is an important factor determining seed germination.
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Claims 5
Claim · model-written summary
Local Dactylis glomerata populations from NW Spain and central Italy, except one central Italian ecotype, showed a positive germination response to alternating temperatures.
- Taxon
- Dactylis glomerata
.jpg?width=60)
Dactylis glomeratat0 - Material
- local populationse0
- Treatment
- alternating temperaturese0
- Outcome
- germination responsee0
- Direction
- positivee0
- Qualifier
- with the exception of one ecotype from central Italye0
- Setting
- NW Spain and central Italye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“Dactylis glomerata”
e0“local populations of Dactylis glomerata from NW Spain and central Italy showed that, with the exception of one ecotype from central Italy, there was a positive germination response to alternating temperatures”
Claim · model-written summary
Five bred varieties showed no germination response to alternating temperatures; constant temperatures were as effective as alternating ones.
- Taxon
- Dactylis glomerataDactylis glomeratat0
- Material
- five bred varietiese0
- Treatment
- alternating temperaturese0
- Outcome
- responsee0
- Direction
- no such responsee0
- Comparator
- constant temperaturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dactylis glomerata”
e0“With five bred varieties from the Welsh Plant Breeding Station, Aberystwyth there was no such response and constant temperatures were as effective as alternating temperatures”
Claim · model-written summary
A low temperature treatment (2 °C) before germination at constant temperatures increased germination of the Spanish and Italian populations, except the central Italian ecotype.
- Taxon
- Dactylis glomerataDactylis glomeratat0
- Material
- Spanish and Italian populationse0
- Treatment
- A low temperature treatment (2 °C) before germinatione0
- Outcome
- germinatione0
- Direction
- increasede0
- Qualifier
- with the exception of the ecotype from central Italye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dactylis glomerata”
e0“A low temperature treatment (2 °C) before germination at constant temperatures, also increased germination of the Spanish and Italian populations with the exception of the ecotype from central Italy”
Claim · model-written summary
Increasing air temperature from 15 °C to 25 °C during seed development increased subsequent germination at constant and alternating temperatures.
- Taxon
- Dactylis glomerataDactylis glomeratat0
- Treatment
- Increasing air temperature from 15 °C to 25 °C during seed developmente0
- Outcome
- subsequent germinatione0
- Direction
- increasede0
- Qualifier
- at constant and alternating temperaturese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Dactylis glomerata”
e0“Increasing air temperature from 15 °C to 25 °C during seed development increased subsequent germination at constant and alternating temperatures”
Claim · model-written summary
Mean July temperature was related to germination of seven stocks of diploid cocksfoot from NW Spain, suggesting air temperature at seed development is an important determinant of germination under field conditions.
Not reportedDirection
Verbatim
e0“The relationship between the mean July temperature and the germination of seven stocks of a diploid cocksfoot from NW Spain suggested that”
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See all 7 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.