Increasing water stress negatively affects pear fruit growth by reducing first its xylem and then its phloem inflow

Morandi, Brunella; Losciale, Pasquale; Manfrini, Luigi; Zibordi, M.; Anconelli, S.; Galli, Fábio; Pierpaoli, E.; Grappadelli, Luca Corelli

doi:10.1016/j.jplph.2014.07.005

Cited by 39 publications

(21 citation statements)

References 53 publications

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“…It has been shown in previous studies, that in the beginning of drought conditions, it is possible to modify the water potential gradients in different tree organs, affecting the water-tree relationship (Diaz et al, 2016). At the foliar level, ABA and other molecules are transported from the roots as signals to reduce the water loss in the leaves in the transpiration process, in addition, water stress can improve the photosynthetic efficiency through an osmotic adjustment in the leaves (Morandi et al, 2014). In others studies with CDI in two stages of fruit growth, a higher osmotic adjustment was found as compared to the non-deficit irrigation treatment (Marsal et al, 2000).…”

Section: Resultsmentioning

confidence: 99%

Effect of deficit irrigation on the postharvest of pear variety Triunfo de Viena (Pyrus communis L.) in Sesquile (Cundinamarca, Colombia)

Bayona-Penagos¹,

Vélez-Sánchez²,

Rodríguez-Hernández³

2017

Agron. colomb.

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A technique settled to optimize the use of water resources is known as Controlled Deficient Irrigation (CDI), for which this experiment was carried out to determine the effect of a three water laminae: 100 (T1), 25 (T2) and 0% (T3) crop's evapotranspiration (ETc) on the rapid growth phase of the pear fruit variety Triunfo de Viena.The fruit quality (fresh weight variation, osmotic potential, color, acidity, soluble solids, CO2 emission, dry matter, volume, firmness, ripeness index and moisture content) was evaluated over a two-month storage period. The first quality measurement was taken 2 days after harvest (DAH 8), with significant differences between treatments according to the Duncan test (P≤0.05):the largest fruit size was achieved with 100% ETc, (its diameter and volume were 7.70 cm and 217.5 cm3, respectively.), the firmness was higher in the treatment without water (T3), with a value of 8.02 N; however, during the rest of the storage time, there were no significant differences, showing water restriction during the rapid growth phase of the fruit provided 100% water savings without compromising quality in terms of fresh weight, total titratable acidity, color index, total soluble solids and moisture content.

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Section: Resultsmentioning

confidence: 99%

Effect of deficit irrigation on the postharvest of pear variety Triunfo de Viena (Pyrus communis L.) in Sesquile (Cundinamarca, Colombia)

Bayona-Penagos¹,

Vélez-Sánchez²,

Rodríguez-Hernández³

2017

Agron. colomb.

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“…Monthly rainfall deficits during the vegetation season of the pear tree (April-October) in the Isparta and Bydgoszcz regions is shown in Figure 2. The water deficit negatively affects the physiological parameters and the yield of pear fruit [8][9][10][11][12]. According to Behboudian et al [8] water deficit in pear cultivation is unfavorable, especially at the beginning of the growing season, because it negatively affects water relations, photosynthesis and fruit growth.…”

Section: Resultsmentioning

confidence: 99%

“…Water stressaffects reductions in leaf and stem water potentials, leaf turgor pressure and gas exchanges [11; 18; 19]. In the research Morandi et al [11] found that water stress negatively affects pear fruit growth by reducing first its xylem and then its phloem inflow. This determines a progressive increase in the phloem relative contribution to growth, which leads to the typical higher dry matter percentages of stressed fruit.…”

Section: Resultsmentioning

confidence: 99%

“…The water deficit negatively affects the physiological parameters and yield of pear fruit. Trees subjected to prolonged water deficit usually produce smaller fruit and lower fruit yields [8][9][10][11][12]. In the literature there is information about cultivation or water requirements of fruits trees in the area of Isparta (Turkey) and Bydgoszcz (Poland) regions [7; 13].…”

Section: Introductionmentioning

confidence: 99%

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Comparison of pear tree water needs in Isparta (Turkey) and Bydgoszcz (Poland) regions

Senyigit

Rolbiecki

et al. 2018

Engineering for Rural Development

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Abstract. The purpose of the study has been an attempt at a comparison of pear-tree water needs in the vegetation period in the Bydgoszcz region (Poland) and in the Isparta region (Turkey). The paper refers to the 1984-2014 temperature and rainfall values in the Bydgoszcz and Isparta regions. To determine the reference evapotranspiration (ETo), the calculation model by Hargreaves -modified by Droogers and Allen -was applied. Potential evapotranspiration (ETp), identified with pear-tree water needs, was determined with the method of crop coefficients proposed by Doorenbos and Pruitt. In each of the seven months considered (April-October) higher pear-tree water needs occurred in the Isparta region. The highest monthly pear-tree water needs were noted in July and in the studied period, respectively for the Bydgoszcz and Isparta regions, they were on average 105 mm and 215 mm. Pear-tree water needs throughout the vegetation period (April-October) were much higher (by 114 %) in the Isparta region than in the Bydgoszcz region. The highest rainfall deficits occurred in July and, respectively for the Bydgoszcz and Isparta regions, amounted to 33 mm and 195 mm.

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“…In this study, we used the heat-girdling method, heating or steaming the peduncle to kill phloem cells and restrict the phloem influx to fruit because this has been used to estimate transpiration and there are many reports in fruit trees such as Vitis vinifera L. (Greenspan et al, 1994(Greenspan et al, , 1996Lang and Thorpe, 1989), Malus pumila L. (Lang, 1990), Prunus persica (L.) Batsch (Fishman et al, 2001;Morandi et al, 2014), and P. avium L. (Brüggenwirth et al, 2016). In addition, systematic errors are very small in the short term with a statistically sufficient sample, and this is the only method that allows the estimation of xylem and phloem influx and transpiration in the greenhouse (Fishman et al, 2001) using the heat-girdling method because it is available for greenhouse tomato production and can evaluate many fruits in a short time.…”

Section: Introductionmentioning

confidence: 99%

Differences in Water and Assimilate Fluxes in Tomato Fruits among Cultivars, and Relationships with Fruit Yield and Soluble Solids Content

Kawasaki

Higashide

2018

Hortic J

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Fruit growth represents the balance between material influxes via xylem and phloem and efflux by transpiration via the stomata of the calyx and cuticle of fruit, which determines the yield and soluble solids content (SSC). Knowledge of these factors is important for the production of high-SSC tomato fruit, but no physiological indicator is available to allow prediction of fruit yield and SSC for breeding and crop production purposes. To identify indicators, we grew Japanese, Dutch, Japanese × Dutch, and high-SSC cultivars and sought correlations of the fluxes to fruit with yield and SSC. To estimate the contributions of the xylem, phloem, and transpiration fluxes to fruit weight increase, we measured 2-day growth rates of intact, detached, and heat-girdled (peduncle steamed for 90 to 120 s) fruits treated at 14, 28, or 42 days after flowering (DAF). Xylem influx was much lower in the high-SSC cultivar than in the others. Phloem influx was lower in the Dutch and hybrid cultivars at 28 DAF. Transpiration efflux was greater in the Japanese cultivar at 42 DAF. Fruit growth rate at 14 DAF was positively correlated with yield, and phloem influx per fruit weight increase at 14 and 28 DAF was positively correlated with SSC. These results show how the xylem, phloem, and transpiration fluxes of fruit can predict fruit yield and SSC. This information will help the production and breeding of high-SSC fruit.

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Increasing water stress negatively affects pear fruit growth by reducing first its xylem and then its phloem inflow

Cited by 39 publications

References 53 publications

Effect of deficit irrigation on the postharvest of pear variety Triunfo de Viena (Pyrus communis L.) in Sesquile (Cundinamarca, Colombia)

Effect of deficit irrigation on the postharvest of pear variety Triunfo de Viena (Pyrus communis L.) in Sesquile (Cundinamarca, Colombia)

Comparison of pear tree water needs in Isparta (Turkey) and Bydgoszcz (Poland) regions

Differences in Water and Assimilate Fluxes in Tomato Fruits among Cultivars, and Relationships with Fruit Yield and Soluble Solids Content

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