Abstract
The effects of rootstocks and water supply on growth and productive behavior of pear trees were evaluated during the growing season of 2003. The experiment was carried out in the experimental area of the Dipartimento di Coltivazione and Difese Delle Specie Legnose, Universita degli Studi di Pisa, Italy. Nine-year old trees of the cv. Doyenne Du Comice were used, grafted either on pear (Pyrus communis) or quince (Cydonia oblonga Mill.) rootstocks and grown under two different water regimes, irrigated or non-irrigated. The fruit growth curves, water xylematic potential, trunk diameter fluctuation, leaf temperature, gaseous exchanges, soil moisture content and estimated yield were analysed during the fruit growing period. The fruit development presented a standard simple sigmoidal curve. Irrigated trees produced larger fruits, where the most significant period was the final fruit growth stage. Irrigation also induced greater fluctuation of the trunk diameter and low leaf temperature, even after 35 days of water removal. Trees grafted on irrigated quince rootstocks exhibited higher gaseous exchanges, as well as estimated yields. The results indicated that water stress can influence the growth and productive characteristics of pear trees. The quince rootstocks showed more sensitivity to water stress than Pyrus ssp. rootstocks.
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Claims 7
Claim · model-written summary
Pear fruit followed a simple sigmoidal growth curve.
- Taxon
- PEAR TREES
_Poirier_Fleurs_et_feuilles.jpg?width=60)
Pyrus communist0 - Outcome
- fruit development presented a standard simple sigmoidal curvee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Poirier_Fleurs_et_feuilles.jpg?width=500)
Verbatim
e0“The fruit development presented a standard simple sigmoidal curve.”
t0“PEAR TREES”
Claim · model-written summary
Irrigated pear trees produced larger fruits.
- Taxon
- PEAR TREESPyrus communist0
- Organ / stage
- final fruit growth stagee0
- Treatment
- Irrigatede0
- Outcome
- fruitse0
- Direction
- largere0
- Comparator
- non-irrigatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigated trees produced larger fruits, where the most significant period was the final fruit growth stage.”
t0“PEAR TREES”
e1“irrigated or non-irrigated”
Claim · model-written summary
Irrigation increased trunk diameter fluctuation.
- Taxon
- PEAR TREESPyrus communist0
- Treatment
- Irrigatione0
- Outcome
- fluctuation of the trunk diametere0
- Direction
- greatere0
- Qualifier
- even after 35 days of water removale0
- Comparator
- non-irrigatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation also induced greater fluctuation of the trunk diameter and low leaf temperature, even after 35 days of water removal.”
e1“irrigated or non-irrigated”
t0“PEAR TREES”
Claim · model-written summary
Irrigation lowered leaf temperature even after 35 days of water removal.
- Taxon
- PEAR TREESPyrus communist0
- Treatment
- Irrigatione0
- Outcome
- leaf temperaturee0
- Direction
- lowe0
- Qualifier
- even after 35 days of water removale0
- Comparator
- non-irrigatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Irrigation also induced greater fluctuation of the trunk diameter and low leaf temperature, even after 35 days of water removal.”
e1“irrigated or non-irrigated”
t0“PEAR TREES”
Claim · model-written summary
Trees on irrigated quince rootstocks had higher gaseous exchanges.
- Taxon
- PEAR TREESPyrus communist0
- Treatment
- irrigated quince rootstockse0
- Outcome
- gaseous exchangese0
- Direction
- highere0
- Comparator
- non-irrigatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trees grafted on irrigated quince rootstocks exhibited higher gaseous exchanges, as well as estimated yields.”
e1“grafted either on pear (Pyrus communis) or quince (Cydonia oblonga Mill.) rootstocks and grown under two different water regimes, irrigated or non-irrigated”
t0“PEAR TREES”
Claim · model-written summary
Trees on irrigated quince rootstocks had higher estimated yields.
- Taxon
- PEAR TREESPyrus communist0
- Treatment
- irrigated quince rootstockse0
- Outcome
- estimated yieldse0
- Direction
- highere0
- Comparator
- non-irrigatede1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trees grafted on irrigated quince rootstocks exhibited higher gaseous exchanges, as well as estimated yields.”
e1“irrigated or non-irrigated”
t0“PEAR TREES”
Claim · model-written summary
Quince rootstocks were more sensitive to water stress than Pyrus rootstocks.
- Taxon
- PEAR TREESPyrus communist0
- Material
- quince rootstockse0
- Outcome
- sensitivity to water stresse0
- Direction
- moree0
- Comparator
- Pyrus ssp. rootstockse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The quince rootstocks showed more sensitivity to water stress than Pyrus ssp. rootstocks.”
t0“PEAR TREES”
The same questions in other papers
Cydonia oblonga · yield · Pyrus communis (pear)Positive and negative results
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- negative
- negative
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See all 9 papers →grafting · yield · Pyrus communis (pear)Positive and negative results
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- no effect
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See all 12 papers →irrigation · yield · Pyrus communis (pear)Positive and negative results
11 papers in the same direction as this paper · 8 in the opposite direction · 3 reporting no difference from an alternative
- negative
- negative
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See all 23 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.