Abstract
AbstractThere was no effect of irradiance level on surviving percentages of shoot tip explants of the pear rootstock BP10030, but low irradiance stimulated the initial growth of the explant. Irradiance had a strong effect on shoot multiplication. With an increase in photosynthetic photon flux (PPF) from 10 to 80 μmol m−2s−1, shoot number and length and shoot fresh and dry weights increased. The greatest number of shoots and the longest ones were obtained with a 16 h photoperiod, while the highest fresh and dry weight of shoots were produced with a 24 h photoperiod. Rooting percentage and the number of roots were markedly promoted under 80 μmolm−2s−1 PPF. Photoperiods of 8, 16 and 24 h produced similar effects on rooting percentages and the numbers of roots. Four to seven days of darkness were the optimum for rooting. Rooting percentage and the number of roots increased with increased temperature during darkness between 5 and 25°C. A further increase in dark temperature up to 30°C reduced rooting percentage and root number.
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Claims 11
Claim · model-written summary
Irradiance level had no effect on shoot tip explant survival percentage.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communise0 - Material
- BP10030e0
- Treatment
- irradiance levele0
- Outcome
- surviving percentages of shoot tip explantse0
- Direction
- no effecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“There was no effect of irradiance level on surviving percentages of shoot tip explants of the pear rootstock BP10030”
Claim · model-written summary
Low irradiance stimulated initial explant growth.
- Taxon
- pearPyrus communise1
- Material
- BP10030e1
- Treatment
- low irradiancee0
- Outcome
- initial growth of the explante0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“low irradiance stimulated the initial growth of the explant”
e1“pear rootstock BP10030”
Claim · model-written summary
Irradiance strongly affected shoot multiplication.
- Taxon
- pearPyrus communise1
- Material
- BP10030e1
- Treatment
- Irradiancee0
- Outcome
- shoot multiplicatione0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irradiance had a strong effect on shoot multiplication”
e1“pear rootstock BP10030”
Claim · model-written summary
Increasing PPF from 10 to 80 increased shoot number and length and fresh and dry weight.
- Taxon
- pearPyrus communise1
- Material
- BP10030e1
- Treatment
- increase in photosynthetic photon flux (PPF) from 10 to 80 μmol m−2s−1e0
- Outcome
- shoot number and length and shoot fresh and dry weightse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With an increase in photosynthetic photon flux (PPF) from 10 to 80 μmol m−2s−1, shoot number and length and shoot fresh and dry weights increased”
e1“pear rootstock BP10030”
Claim · model-written summary
A 16 h photoperiod gave the greatest shoot number and length.
- Taxon
- pearPyrus communise1
- Material
- BP10030e1
- Treatment
- 16 h photoperiode0
- Outcome
- number of shoots and the longest onese0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The greatest number of shoots and the longest ones were obtained with a 16 h photoperiod”
e1“pear rootstock BP10030”
Claim · model-written summary
A 24 h photoperiod produced the highest shoot fresh and dry weight.
- Taxon
- pearPyrus communise1
- Material
- BP10030e1
- Treatment
- 24 h photoperiode0
- Outcome
- fresh and dry weight of shootse0
- Direction
- higheste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the highest fresh and dry weight of shoots were produced with a 24 h photoperiod”
e1“pear rootstock BP10030”
Claim · model-written summary
PPF of 80 promoted rooting percentage and root number.
- Taxon
- pearPyrus communise1
- Material
- BP10030e1
- Treatment
- 80 μmolm−2s−1 PPFe0
- Outcome
- Rooting percentage and the number of rootse0
- Direction
- markedly promotede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rooting percentage and the number of roots were markedly promoted under 80 μmolm−2s−1 PPF”
e1“pear rootstock BP10030”
Claim · model-written summary
Photoperiods of 8, 16 and 24 h had similar effects on rooting percentage and root number.
- Taxon
- pearPyrus communise1
- Material
- BP10030e1
- Treatment
- Photoperiods of 8, 16 and 24 he0
- Outcome
- rooting percentages and the numbers of rootse0
- Direction
- similar effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Photoperiods of 8, 16 and 24 h produced similar effects on rooting percentages and the numbers of roots”
e1“pear rootstock BP10030”
Claim · model-written summary
Four to seven days of darkness were optimal for rooting.
- Taxon
- pearPyrus communise1
- Material
- BP10030e1
- Treatment
- Four to seven days of darknesse0
- Outcome
- rootinge0
- Direction
- optimume0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Four to seven days of darkness were the optimum for rooting”
e1“pear rootstock BP10030”
Claim · model-written summary
Raising dark temperature from 5 to 25°C increased rooting percentage and root number.
- Taxon
- pearPyrus communise1
- Material
- BP10030e1
- Treatment
- increased temperature during darkness between 5 and 25°Ce0
- Outcome
- Rooting percentage and the number of rootse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Rooting percentage and the number of roots increased with increased temperature during darkness between 5 and 25°C”
e1“pear rootstock BP10030”
Claim · model-written summary
Raising dark temperature to 30°C reduced rooting percentage and root number.
- Taxon
- pearPyrus communise1
- Material
- BP10030e1
- Treatment
- further increase in dark temperature up to 30°Ce0
- Outcome
- rooting percentage and root numbere0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A further increase in dark temperature up to 30°C reduced rooting percentage and root number”
e1“pear rootstock BP10030”
The same questions in other papers
light · survival · Pyrus communis (pear)Positive and negative results
1 in the opposite direction
- positive
light · growth · Pyrus communis (pear)Positive and negative results
3 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- no effect
- negative
4 papers more in this group
See all 8 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.