Abstract
The results of the study of the adaptation potential of perennial fruit crops depending on climatic changes are presented. The physiological state of some pear varieties during summer periods in 2021, 2022 in the fruit plantations of the Krasnodar Territory were evaluated. Two Russian varieties (Flamenko, Luberskaya) and two European varieties (Conference, Williams) were studied. An experiment on artificially drying freshly harvested pear leaves at constant room temperature was conducted to amplify the negative effects of summer stressors. The relative water content of leaves and electrolyte leakage were determined before and after the stress according to generally accepted methods. It was found that relative humidity is an important factor for normal leaf development, and the change in its values in the summer months correlated with the variability of values of the stress parameter of pear leaves - electrolyte leakage. It was found that the widespread European variety Conference was the most susceptible to the effects of artificial stress. After a short drying period, this variety was characterized by a sharp increase in the electrolyte leakage to ~36 % on the background of a significant decrease in the relative water content in the leaves (71–73 %), due to the development of oxidative processes, leading to a violation of the integrity of cell membranes. Russian varieties Flamenko and Luberskaya, as well as the European variety Williams, on the contrary, by the studied physiological parameters had no strong differences (the change of physiological parameters was from 1.1 to 1.3 times), which allowed them to be identified as more resistant varieties to this type of stress exposure.
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Claims 6
Claim · model-written summary
In pear leaves, changes in relative humidity over the summer months correlated with variability of electrolyte leakage.
- Taxon
- pear
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Treatment
- relative humiditye1
- Outcome
- electrolyte leakagee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
t0“pear cultivars”
e1“relative humidity is an important factor for normal leaf development, and the change in its values in the summer months correlated with the variability of values of the stress parameter of pear leaves - electrolyte leakage”
Claim · model-written summary
After a short drying period, electrolyte leakage in leaves of the pear variety Conference rose sharply to about 36 %.
- Taxon
- pearPyrus communist0
- Material
- Conferencee3
- Treatment
- short drying periode2
- Outcome
- electrolyte leakagee2
- Direction
- sharp increasee2
- Value
- ~36 %e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pear cultivars”
e2“After a short drying period, this variety was characterized by a sharp increase in the electrolyte leakage to ~36 %”
e3“European variety Conference was the most susceptible to the effects of artificial stress”
Claim · model-written summary
After drying, relative water content in Conference pear leaves decreased significantly to 71-73 %.
- Taxon
- pearPyrus communist0
- Material
- Conferencee3
- Treatment
- short drying periode2
- Outcome
- relative water contente4
- Direction
- decreasee4
- Value
- 71–73 %e4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pear cultivars”
e2“After a short drying period, this variety was characterized by a sharp increase in the electrolyte leakage to ~36 %”
e3“European variety Conference was the most susceptible to the effects of artificial stress”
e4“a significant decrease in the relative water content in the leaves (71–73 %)”
Claim · model-written summary
The European pear variety Conference was the most susceptible of the studied varieties to artificial stress.
- Taxon
- pearPyrus communist0
- Material
- Conferencee3
- Treatment
- artificial stresse3
- Outcome
- susceptiblee3
- Direction
- most susceptiblee3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pear cultivars”
e3“European variety Conference was the most susceptible to the effects of artificial stress”
Claim · model-written summary
The pear varieties Flamenko, Luberskaya and Williams showed no strong differences in physiological parameters under the stress, with changes of 1.1 to 1.3 times.
- Taxon
- pearPyrus communist0
- Material
- Flamenko and Luberskaya, as well as the European variety Williamse5
- Outcome
- physiological parameterse6
- Direction
- no strong differencese6
- Value
- from 1.1 to 1.3 timese6
Not reportedTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pear cultivars”
e5“Russian varieties Flamenko and Luberskaya, as well as the European variety Williams”
e6“had no strong differences (the change of physiological parameters was from 1.1 to 1.3 times)”
Claim · model-written summary
Flamenko, Luberskaya and Williams were identified as more resistant pear varieties to this type of stress exposure.
- Taxon
- pearPyrus communist0
- Material
- Flamenko and Luberskaya, as well as the European variety Williamse5
- Outcome
- more resistant varieties to this type of stress exposuree7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“pear cultivars”
e5“Russian varieties Flamenko and Luberskaya, as well as the European variety Williams”
e7“which allowed them to be identified as more resistant varieties to this type of stress exposure”
The same questions in other papers
processing · physiology: water · Pyrus communis (pear)Positive and negative results
1 paper in the same direction as this paper · 1 in the opposite direction
- positive
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processing · physiology: oxidative · Pyrus communis (pear)Results agree
1 paper in the same direction as this paper
- negative
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.