Abstract
Sclereid cell clusters are a significant character of pear fruits, both in Asian (Pyrus pyrifolia) and European cultivars (P. communis). The dispersal and form of sclereid clusters affects texture and fruit quality of pear cultivars. This research was carried out to evaluate histological and pomological characterization of 5 local, 19 exogenous (European) and 4 unknown pear cultivars from the Iranian National Pyrus Collection, established in Karaj. Histological evaluation of sclereids was performed microscopically by new-methylene blue staining of fruit tissue. The pomological evaluation of fruits was based on the UPOV descriptor and their correlations with sclereids characterizations were statistically determined. Among tested cultivars, two cultivars, 'Felestini' and 'Red Bartlett', showed the lowest and highest sclereid cluster per sample, while two cultivars, 'Felestini' and 'Shahak' demonstrated the lowest and highest sclereid cell per cluster, respectively. The fruit size and volume had high correlation with sclereid cluster density; accordingly genetically small fruit-bearing cultivars demonstrated higher sclereid density. The results also revealed that sclereid differentiation occurs in primary fruit development phase, before cell division termination that usually in pear fruits is not longer than 60 days. Therefore, more cell enlargement inducing condition result in a decrease in the sclereid density in pear fruits.
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Claims 8
Claim · model-written summary
Felestini had the fewest sclereid clusters per sample.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communise1 - Material
- 'Felestini'e0
- Outcome
- sclereid cluster per samplee0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“'Felestini' and 'Red Bartlett', showed the lowest and highest sclereid cluster per sample”
e1“fruit quality of pear cultivars”
Claim · model-written summary
Red Bartlett had the most sclereid clusters per sample.
- Taxon
- pearPyrus communise1
- Material
- 'Red Bartlett'e0
- Outcome
- sclereid cluster per samplee0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“'Felestini' and 'Red Bartlett', showed the lowest and highest sclereid cluster per sample”
e1“fruit quality of pear cultivars”
Claim · model-written summary
Felestini had the fewest sclereid cells per cluster.
- Taxon
- pearPyrus communise1
- Material
- 'Felestini'e0
- Outcome
- sclereid cell per clustere0
- Direction
- loweste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“'Felestini' and 'Shahak' demonstrated the lowest and highest sclereid cell per cluster”
e1“fruit quality of pear cultivars”
Claim · model-written summary
Shahak had the most sclereid cells per cluster.
- Taxon
- pearPyrus communise1
- Material
- 'Shahak'e0
- Outcome
- sclereid cell per clustere0
- Direction
- higheste0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“'Felestini' and 'Shahak' demonstrated the lowest and highest sclereid cell per cluster”
e1“fruit quality of pear cultivars”
Claim · model-written summary
Fruit size and volume correlated strongly with sclereid cluster density.
- Taxon
- pearPyrus communise1
- Organ / stage
- fruite0
- Outcome
- sclereid cluster densitye0
- Qualifier
- high correlatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The fruit size and volume had high correlation with sclereid cluster density”
e1“fruit quality of pear cultivars”
Claim · model-written summary
Genetically small-fruited cultivars had higher sclereid density.
- Taxon
- pearPyrus communise1
- Material
- cultivarse0
- Outcome
- sclereid densitye0
- Direction
- highere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“genetically small fruit-bearing cultivars demonstrated higher sclereid density”
e1“fruit quality of pear cultivars”
Claim · model-written summary
Sclereids differentiated in the primary phase of pear fruit development before cell division ceased.
- Taxon
- pearPyrus communise0
- Organ / stage
- fruite0
- Outcome
- sclereid differentiatione0
- Value
- 60 dayse0
- Qualifier
- before cell division terminatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“sclereid differentiation occurs in primary fruit development phase, before cell division termination that usually in pear fruits is not longer than 60 days.”
Claim · model-written summary
Conditions inducing more cell enlargement were interpreted to decrease sclereid density.
- Taxon
- pearPyrus communise0
- Outcome
- sclereid densitye0
- Direction
- decreasee0
- Qualifier
- more cell enlargement inducing conditione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“more cell enlargement inducing condition result in a decrease in the sclereid density in pear fruits.”