Frost Resistance of Some Olive Cultivars During the Winter

Antognozzi, E.; Famiani, Franco; Proietti, Primo; Pannelli, Giorgio; Alfei, B.

doi:10.17660/actahortic.1994.356.32

Cited by 11 publications

(11 citation statements)

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“…Leaves were more sensitive to frost than shoots (Fig. 6), as observed by Mancuso (2000), Denney et al (1993) and Antognozzi et al (1994). The latter authors found that the lethal freezing temperature (LT 50 ) of leaves reached 2 128C, while that of shoots was 2 188C.…”

Section: Resultsmentioning

confidence: 54%

“…2) as observed by other authors (Fontanazza and Preziosi, 1969;Pezzarossa, 1985;Barranco et al, 2005). Different cold-hardening rates may explain the differences in frost resistance found between olive cultivars (Antognozzi et al, 1994). Frost resistance was not influenced by the vigour of each cultivar, as no significant between-cultivar differences were found for total dry matter of the aerial part of the plants (Table 1).…”

Section: Resultsmentioning

confidence: 96%

“…In an assay carried out in the laboratory, Antognozzi et al (1994) found that leaves and shoots showed the greatest frost resistance in January and February and that the greatest differences between cultivars were produced at the beginning and the end of the frost period.…”

Section: Resultsmentioning

confidence: 99%

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Field evaluation of frost tolerance in 10 olive cultivars

Gómez-del-Campo

Barranco

2005

Plant Genet. Resour.

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Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 96%

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Field evaluation of frost tolerance in 10 olive cultivars

Gómez-del-Campo

Barranco

2005

Plant Genet. Resour.

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“…The olive tree can adapt well to harsh environmental conditions such as drought and high temperature. However, it is very sensitive to low temperatures, with a risk of severe and persistent damage when the temperature falls below −10°C (Antognozzi et al 1993).…”

Section: Introductionmentioning

confidence: 99%

Olive flowering trends in a large Mediterranean area (Italy and Spain)

et al. 2009

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The aim of this study was to investigate the main climatic and biological trends related to olive flowering in central-southern Italy compared to those in Andalusia, Spain. Results since 1982 were compared for the two long-series monitoring areas of Cordoba and Perugia, and since 1992-1999 for the short-series areas. The relationship between climatic trends and the biological response of the olive, a widespread culture in the Mediterranean basin, were investigated. An aerobiological method involving capturing pollen released into the atmosphere was utilised as a bioindicator of flowering phenology. The study results confirm the strong relationship between flowering periods and spring temperature trends for the olive. Temperature during March, April and May was the parameter most related to flowering date in the study areas, particularly in Italy. In some cases we found a significant correlation between flowering and past autumn temperatures, probably due to their effect on floral bud dormancy induction, but this phenomenon appeared to be of minor importance in the studied areas. The phenological trend results show the continuous advance of flowering dates to the late 1990s, followed by a relatively stationary time series related to a short-term temperature fluctuation in the Mediterranean area. This latter period probably represents a mesoscale event forced by a macroscale event-the North Atlantic Oscillation. The results reveal that the trend towards increased temperatures, and the consequent flowering advance of some species, indicated some years ago is nowadays not as clear as was expected and should be confirmed over the next few years in the Mediterranean areas under investigation.

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“…Different letters inside each column indicate a statistically significant difference when means were separated by Duncan's multiple range test (P \ 0.05; n = 5) Fiorino and Mancuso (2000) and Mancuso (2000). Antognozzi et al (1994) found that the LT 50 of olive leaves collected from different varieties reached -12°C, while that of shoots reached -18°C. The higher sensitivity of leaves may be due to their greater exposure to cold resulting in a more rapid heat loss (Denney et al 1993), even if other factors should be involved in olivefreezing tolerance.…”

Section: Discussionmentioning

confidence: 99%

Comparing image (fractal analysis) and electrochemical (impedance spectroscopy and electrolyte leakage) techniques for the assessment of the freezing tolerance in olive

Azzarello

Mugnai

Pandolfi

et al. 2008

Trees

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Olive growth and productivity are limited by low temperatures mainly during winter, but sometimes also in spring and fall. The most effective way to avoid these damages in areas subjected to these climatic conditions is to select least susceptible varieties, but the choice of the right method to determine cold hardiness is extremely difficult. The aims of the work were (1) to assess LT50 (lethal temperature at which 50% of damage in plants subjected to low temperatures occurs) of some olive varieties in two seasons (summer and winter) and (2) to assess the reliability of different methods to evaluate cold hardiness. LT50 was determined on 21 different olive (Olea europaea L.) Italian varieties by leaf and shoot electrolyte leakage, shoot impedance spectroscopy and leaf color determination of fractal spectrum. All the experiments were conducted on non-acclimated and cold-acclimated plants. Our results showed that all the three methods were able to detect damages on olive plants after exposure to low temperatures, with leaves appearing more sensitive to cold stress than shoots. Among these methods, fractal analysis could be very useful in assessing cold hardiness of plants on the basis of visible injury, without sophisticated or expensive instruments and in a reliable and cost-effective way, using only a scanning device, a personal computer and dedicated freeware software.[...

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Frost Resistance of Some Olive Cultivars During the Winter

Cited by 11 publications

References 0 publications

Field evaluation of frost tolerance in 10 olive cultivars

Field evaluation of frost tolerance in 10 olive cultivars

Olive flowering trends in a large Mediterranean area (Italy and Spain)

Comparing image (fractal analysis) and electrochemical (impedance spectroscopy and electrolyte leakage) techniques for the assessment of the freezing tolerance in olive

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