Vegetative Growth and Salt Accumulation of Six Olive Cultivars Under Salt Stress

Perica, Slavko; Brkljača, Mia; Goreta, Smiljana; Romić, Davor; Romić, Marija

doi:10.17660/actahortic.2004.664.69

Cited by 3 publications

(4 citation statements)

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“…1A-F). This supports previous findings, classifying Leccino as sensitive to NaCl when compared to other cultivars (Chartzoulakis, 2005;Perica et al, 2004). The highest growth reduction was found with respect to shoot length, confirming that elongation is more sensitive to salinity than the number of nodes and leaves (Tattini et al, 1995), probably due to an accumulation of Na + ions in the stems (Tattini, 1994;Chartzoulakis et al, 2002).…”

Section: Discussionsupporting

confidence: 89%

“…The reduction of growth of olive trees exposed to salinity depends on the duration of exposure and salt concentration, with an earlier growth decline in sensitive cultivars (Tattini, 1994;Perica et al, 2004). The two olive cultivars examined in this study differed in their salinity tolerance, as was evidenced from the measured growth parameters.…”

Section: Discussionmentioning

confidence: 75%

“…Olive orchards are frequently exposed to increased soil salinity caused by summer drought and deficiency of good-quality irrigation water or high rates of evaporation and insufficient leaching of irrigated land (Chartzoulakis, 2005). In comparison to other fruit trees, olive is considered moderately tolerant (Kozlowski, 1997) with marked differences found among cultivars (Therios and Misopolinos, 1988;Chartzoulakis et al, 2002;Perica et al, 2004). Salt damage of growing tissue is prevented by salt exclusion at root level, inhibition of salt transport to shoot, retention of toxic ions in mature leaves, and the ability to maintain a higher K + : Na + ratio (Tattini, 1994;Chartzoulakis et al, 2002;Perica et al, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Salinity‐induced changes in growth, superoxide dismutase activity, and ion content of two olive cultivars

Goreta

Bučević-Popović

Pavela-Vrančić

et al. 2007

Z. Pflanzenernähr. Bodenk.

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Olive trees (Olea europaea L.) are considered moderately tolerant to salinity, with clear differences found among cultivars. One-year-old self-rooted olive plants of the Croatian cv. Oblica and Italian cv. Leccino were grown for 90 d in nutrient solutions containing 0, 66, or 166 mM NaCl, respectively. The shoot length and the number of nodes and leaves for both cultivars were not affected by salinity up to 66 mM NaCl. However, at 166 mM NaCl, growth of Leccino was reduced earlier and to a higher extent than growth of Oblica. After 10 d of exposure to 66 and 166 mM NaCl, increased activity of superoxide dismutase (SOD) was observed in Leccino, whereas there was almost no response in Oblica. Reduced SOD activity in Leccino at 166 mM NaCl was observed after prolonged stress (90 d), whereas in Oblica SOD was increased at 66 mM compared to control or 166 mM NaCl.Electrolyte and K + leakage were increased and relative water content decreased as NaCl concentration increased with similar intensity of response measured in both cultivars. Oblica exhibited an ability to keep a higher K + : Na + ratio at all salinity levels compared to Leccino, but since no difference was found in leaf K + concentration, this was mainly achieved by less Na + ions reaching the younger leaves. The antioxidative system represents a component of the complex olive salttolerance mechanism, and it seems that the role of SOD in protection from oxidative stress depends on sodium accumulation in leaves.

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Section: Discussionsupporting

confidence: 89%

Section: Discussionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

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Salinity‐induced changes in growth, superoxide dismutase activity, and ion content of two olive cultivars

Goreta

Bučević-Popović

Pavela-Vrančić

et al. 2007

Z. Pflanzenernähr. Bodenk.

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“…Salinity tolerance in olive is cultivar-dependent. Several studies have reported large differences between different cultivars (Benlloch et al, 1991;Chartzoulakis et al, 2002;Perica et al, 2004;Tattini et al, 1992;Therios and Misopolinos, 1988). The growth of all tested cultivars is reduced by salinity stress to varying degrees, the cultivars 'Kalamata', 'Picual', 'Lechin', 'de Sevilla', and 'Megaritiki' proved to be tolerant, 'Cordal' 'Manzanillo', 'Frantoio', 'Koroneiki', 'Chemlali' and 'Hotjiblanca' as moderately tolerant, while 'Pajarero' 'Lechino', Chetoui' and 'Chalkidikis' are considered as moderate sensitive (Benlloch et al, 1991(Benlloch et al, , 1994Chartzoulakis, 2005;Chartzoulakis et al, 2002, Therios and Misopolinos, 1988.…”

Section: Effect Of Salinity On Olivesmentioning

confidence: 99%

Combined salinity and ambient ozone stress effects on olive physiology and biochemistry

Abusafieh¹

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The presence of high ambient ozone concentrations is common in the Mediterranean region, while saline water is often used for olive irrigation. The effects of this combined stress on physiology and biochemistry were studied in young olive trees. Two-year-old ‘Konservolea’ and ‘Kalamata’ olive plants (Olea europaea L.) grafted on seedling rootstock were grown in sand:perlite mixture irrigated with half strength Hoagland’s solution containing or not 100 mM NaCl. In open top chambers, the plants received outside air with ambient ozone or charcoal-filtered air from April to October in 2006 and 2008. Specific leaf mass, chlorophyll content, net photosynthetic and transpiration rate, stomatal conductance, chlorophyll fluorescence, midday stem water potential and superoxide dismutase, catalase and ascorbate peroxidase activities were measured periodically from June to September. On October 15, 2006 and 2008, the plants (after sampling fresh tissues for soluble sugar and starch analysis) were divided into roots, trunk, old shoots, new shoots, old leaves and new leaves. Shoot length and total leaf area were initially measured and dry mass at each plant part was measured after complete dryness. Both studied olive cultivars showed similar behavior to salinity stress possibly due to the seedling rootstock on which both cultivars were grafted. Irrigation with 100 mM NaCl solution negatively affected most of the leaf physiological parameters evaluated resulting in reduced productivity. This was clearly evaluated by the dry mass partitioning data, where total tree dry matter decreased due to salinity as shoot length, leaf surface area and dry matter accumulated to new leaves, new shoots and roots was significantly reduced. Salinity also increased neutral sugar concentration in new shoots and leaves and decreased neutral sugarconcentration in roots. The opposite was often found for starch concentration. Ambient ozone concentrations from May to September able to damage plants (daylight mean ozone concentration >60 nL L-1) did not affect the olive leaf functions studied, dry matter accumulation and partitioning and stored sugar metabolism to any of the plant parts of young olive trees. This clearly shows that young olive trees are relatively resistant to ozone levels found around the Mediterranean region. The combination of salinity and ambient ozone stress did not result in any further effectsto leaf physiological parameters besides the ones from the salinity stress alone.

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Growth, biomass allocation and leaf ion concentration of seven olive (Olea europaea L.) cultivars under increased salinity

Perica

Goreta

Selak

2008

Scientia Horticulturae

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Vegetative Growth and Salt Accumulation of Six Olive Cultivars Under Salt Stress

Cited by 3 publications

References 0 publications

Salinity‐induced changes in growth, superoxide dismutase activity, and ion content of two olive cultivars

Salinity‐induced changes in growth, superoxide dismutase activity, and ion content of two olive cultivars

Combined salinity and ambient ozone stress effects on olive physiology and biochemistry

Growth, biomass allocation and leaf ion concentration of seven olive (Olea europaea L.) cultivars under increased salinity

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