Abstract
Germination, establishment, dry weight accumulation and leaf development of seedlings of two Pennisetum typhoides cultivars and a P. typhoides × P. purpureum biotype were studied at four temperatures from 33/28 to 15/10°C (day/night) under natural irradiances. Percentage seedling germination was independent of temperature. However, rate of germination and emergence were fastest, the spread in populations of time to germination least, and seedling survival highest, at the temperature at which rates of leaf area expansion and dry weight accumulation were greatest, i.e. 33/28°C. Rates of dry weight accumulation differed between the three pennisetums, the ranking in early growth at temperatures below 33/28°C being the same as that for seed size, and in later growth at all temperatures being in the order interspecific hybrid > intra-specific hybrid > selected strain.
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Claims 10
Claim · model-written summary
Seedling germination percentage was independent of temperature.
- Taxon
- Pennisetum
Pennisetumt0 - Treatment
- temperaturee0
- Outcome
- Percentage seedling germinatione0
- Direction
- independent ofe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Percentage seedling germination was independent of temperature”
t0“Thermal Adaptation of Pennisetum: Seedling Development”
Claim · model-written summary
Germination rate was fastest at 33/28°C.
- Taxon
- PennisetumPennisetumt0
- Treatment
- 33/28°Ce0
- Outcome
- rate of germinatione0
- Direction
- fasteste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rate of germination and emergence were fastest, the spread in populations of time to germination least, and seedling survival highest, at the temperature at which rates of leaf area expansion and dry weight accumulation were greatest, i.e. 33/28°C”
t0“Thermal Adaptation of Pennisetum: Seedling Development”
Claim · model-written summary
Emergence rate was fastest at 33/28°C.
- Taxon
- PennisetumPennisetumt0
- Treatment
- 33/28°Ce0
- Outcome
- emergencee0
- Direction
- fasteste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rate of germination and emergence were fastest, the spread in populations of time to germination least, and seedling survival highest, at the temperature at which rates of leaf area expansion and dry weight accumulation were greatest, i.e. 33/28°C”
t0“Thermal Adaptation of Pennisetum: Seedling Development”
Claim · model-written summary
Spread in time to germination was least at 33/28°C.
- Taxon
- PennisetumPennisetumt0
- Treatment
- 33/28°Ce0
- Outcome
- spread in populations of time to germinatione0
- Direction
- leaste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the spread in populations of time to germination least, and seedling survival highest, at the temperature at which rates of leaf area expansion and dry weight accumulation were greatest, i.e. 33/28°C”
t0“Thermal Adaptation of Pennisetum: Seedling Development”
Claim · model-written summary
Seedling survival was highest at 33/28°C.
- Taxon
- PennisetumPennisetumt0
- Treatment
- 33/28°Ce0
- Outcome
- seedling survivale0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“seedling survival highest, at the temperature at which rates of leaf area expansion and dry weight accumulation were greatest, i.e. 33/28°C”
t0“Thermal Adaptation of Pennisetum: Seedling Development”
Claim · model-written summary
Leaf area expansion was greatest at 33/28°C.
- Taxon
- PennisetumPennisetumt0
- Treatment
- 33/28°Ce0
- Outcome
- rates of leaf area expansione0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rates of leaf area expansion and dry weight accumulation were greatest, i.e. 33/28°C”
t0“Thermal Adaptation of Pennisetum: Seedling Development”
Claim · model-written summary
Dry weight accumulation was greatest at 33/28°C.
- Taxon
- PennisetumPennisetumt0
- Treatment
- 33/28°Ce0
- Outcome
- dry weight accumulatione0
- Direction
- greateste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rates of leaf area expansion and dry weight accumulation were greatest, i.e. 33/28°C”
t0“Thermal Adaptation of Pennisetum: Seedling Development”
Claim · model-written summary
Dry weight accumulation rates differed among the three Pennisetum groups.
- Taxon
- PennisetumPennisetumt0
- Material
- three pennisetumse0
- Outcome
- Rates of dry weight accumulatione0
- Direction
- differede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rates of dry weight accumulation differed between the three pennisetums”
t0“Thermal Adaptation of Pennisetum: Seedling Development”
Claim · model-written summary
Early growth rankings below 33/28°C matched seed size rankings.
- Taxon
- PennisetumPennisetumt0
- Outcome
- ranking in early growthe0
- Direction
- same ase0
- Qualifier
- temperatures below 33/28°Ce0
- Comparator
- seed sizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“ranking in early growth at temperatures below 33/28°C being the same as that for seed size”
t0“Thermal Adaptation of Pennisetum: Seedling Development”
Claim · model-written summary
Later growth at all temperatures ranked interspecific hybrid above intra-specific hybrid above selected strain.
- Taxon
- PennisetumPennisetumt0
- Material
- interspecific hybrid > intra-specific hybrid > selected straine0
- Outcome
- later growthe0
- Direction
- in the ordere0
- Qualifier
- at all temperaturese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in later growth at all temperatures being in the order interspecific hybrid > intra-specific hybrid > selected strain”
t0“Thermal Adaptation of Pennisetum: Seedling Development”