Estimation of Chilling and Heat Requirement of 'Chemlali' Olive Cultivar and Its Use to Predict Flowering Date

Sahli, Ali; Dakhlaoui, H.; Aounallah, Mohamed Karim; Hellali, R.; Mezghani, Mouna Aïachi; Bornaz, Salwa

doi:10.17660/actahortic.2012.949.21

Cited by 7 publications

(7 citation statements)

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“…The differences are caused by the evolution of temperatures until bud-breaking. Sahli et al 2012 confirm that the winter conditions in the period after chilling accumulation are highly correlated with yearly differences in flowering date. Release from dormancy requires a specific minimum cold temperature requirement be met for growth to resume when temperatures warm in spring.…”

Section: Discussionsupporting

confidence: 71%

Influence of temperature on blackthorn (<I>Prunus spinosa</I> L.) phenophases in spring season

Cosmulescu

Calusaru

2020

J. Agric. Meteorol.

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Phenology is the study of periodic biologic changes that plants are going through, under the influence of environmental factors, especially temperature. The present paper evaluates the behaviour of Prunus spinosa L. genotypes under the fluctuations of climatic factors by calculating the average time elapsed from bud-breaking to blooming, the average time elapsed between different phenophases, the heat demand and the chilling requirement. The data obtained show that the onset of spring season phenological phases is significantly speeded-up by temperatures increase and provides useful information on temperature influence on phenologic phased triggering and better understanding of temperature influence on phenology in Prunus spinosa L. genotypes in Oltenia region of Romania.

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Section: Discussionsupporting

confidence: 71%

Influence of temperature on blackthorn (<I>Prunus spinosa</I> L.) phenophases in spring season

Cosmulescu

Calusaru

2020

J. Agric. Meteorol.

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“…However, we observed a significant correlation between flowering date and HR amount indicating a pattern tendency of early bloomers with low HR. The same results obtained by [68,69] confirm the relationship between heat accumulation and flowering date.…”

Section: Hr Variability and Limits Of Its Assessmentsupporting

confidence: 83%

Statistical Approach to Assess Chill and Heat Requirements of Olive Tree Based on Flowering Date and Temperatures Data: Towards Selection of Adapted Cultivars to Global Warming

Abou-Saaid¹,

Yaacoubi²,

Moukhli³

et al. 2022

Preprint

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Delineating chilling and forcing periods is one of the challenging topics to understand how temperatures drive the timing of budburst and bloom in fruit tree species, especially when flowering data are limited to a short-term phenology data. Here, we investigated this question on olive trees, using flowering data collected over six years on 331 cultivars cultivated in the worldwide collection of Marrakech, Morocco. Using Partial Least Squares (PLS) approach on a long-term phenology (29 years) of Picholine Marocaine cultivar, we showed that the relevance of delineating chilling and forcing periods depends more on the variability of inter-annual temperatures than on the long-term datasets. In fact, chilling and forcing periods are similar between those delineated using datasets of 29 years and those of only six years (2014-2019). Furthermore, we demonstrated that the variability of inter-annual temperatures is the main factor explaining this pattern. We, then, used datasets of six years to assess chill and heat requirements, of 285 cultivars. We classified Mediterranean olive cultivars into four groups according to their chill requirements. Our results, using the kriging interpolation method, indicated that flowering dates of most of these cultivars (92%) were governed by both chilling and forcing temperatures.

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“…Perhaps, the more relevant temperature in this tropical agro-environment is 12.5°C, which was reported by Rallo and Martin (1991) to be sufficient to complete the chilling et al (2004) or Sahli et al (2012), due to differences in calculations of chilling units by each researcher. The other critical temperature in this tropical agro-environment is 24°C, above which olive flowering was suggested to be inhibited by Malik and Bradford (2006).…”

Section: Resultsmentioning

confidence: 93%

“…Plantings of olives have spread outside the Mediterranean region, into countries such as Angola, Australia (northern Victoria province), northwest Argentina, California, and Texas (Aybar et al, 2015;De Melo-Abreu et al, 2004;Mailer and Ayton, 2011;Malik and Bradford, 2006;Sahli et al, 2012;Trentacoste et al, 2010). In Hawaii, olives have been cultivated during most of the 20th century and are naturalized in dry to mesic areas on Hawaii Island (Wagner et al, 1990).…”

mentioning

confidence: 99%

“…Cultivar selection is critical for successful fruit and oil production, because cultivars differ in the chilling requirement to break floral bud dormancy (De Melo-Abreu et al, 2004;Hartmann and Porlingis, 1957;Orlandi et al, 2004;Sahli et al, 2012). In central Italy and southern Spain, Orlandi et al (2004) found that Italian cultivar Ascolana required 1848 h below 7.2°C to reach budburst, whereas Spanish cultivar Picudo required 997 h. In northwest Argentina, at almost all sites (elevations ranging from 350 to 1200 m above sea level) and in all years, 'Arbequina' flowered normally (Aybar et al, 2015).…”

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confidence: 99%

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Promising Olive Cultivars for Oil Production in Hawaii

Miyasaka

Hamasaki

2016

hortte

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To determine promising olive (Olea europaea) cultivars for oil production in Hawaii, seven trees each of 10 cultivars (Arbequina, Arbosana, Coratina, Frantoio, Koroneiki, Leccino, Mission, Moraiolo, Pendolino, and Taggiasca) were planted in Feb. and July 2011 at the Lalamilo Experiment station on Hawaii Island (lat. 20.0176°N, long. 155.6827°W, elevation 2700 ft). In addition, two trees each of these 10 cultivars were planted in June 2011, with the exception of Arbequina, which was planted in July 2012, at the Maui Agricultural Research Center in Kula, Maui (lat. 20.7564°N, long. 156.3289°W, elevation 3100 ft). At Lalamilo, after ≈2 years of growth in the field (2013), three cultivars of olives (Arbequina, Arbosana, and Koroneiki) flowered, fruited, and produced oil yields of greater than 20%. These same cultivars flowered and fruited in 2014 and 2015. There was no significant difference among cultivars in fresh weight fruit yield averaged over 2 years (2013 and 2014), ranging from 2.14 to 2.45 kg/tree. During December to March, calculation of chilling hours below 12.5 °C was 141 hours during 2012–13 and 161 hours during 2013–14. The other seven cultivars did not flower and fruit during these 2 years of growth at Lalamilo, perhaps due to a greater requirement for chilling hours. At Kula, after 3 years of growth (2015), nine cultivars of olives with the exception of Moraiolo flowered and fruited. Mean fresh weight fruit yield in 2015 ranged from 0.25 to 22.06 kg/tree for various cultivars grown in Kula, Maui. In 2013, the oil from three cultivars grown at Lalamilo was analyzed for free fatty acids (FFA), peroxide value (PV), ultraviolet absorption for conjugated double bonds, 1,2-diacylglycerol (DAG), and pyropheophytins (PPP). Oil quality was within the range of extra-virgin olive oil. There is a need to investigate further the effects of temperature and management on flowering and fruiting of olive cultivars grown in Hawaii at various elevations. In particular, ‘Arbequina’, ‘Arbosana’, and ‘Koroneiki’ appear to have a lower requirement for chilling hours than other cultivars tested.

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Estimation of Chilling and Heat Requirement of 'Chemlali' Olive Cultivar and Its Use to Predict Flowering Date

Cited by 7 publications

References 0 publications

Influence of temperature on blackthorn (<I>Prunus spinosa</I> L.) phenophases in spring season

Influence of temperature on blackthorn (<I>Prunus spinosa</I> L.) phenophases in spring season

Statistical Approach to Assess Chill and Heat Requirements of Olive Tree Based on Flowering Date and Temperatures Data: Towards Selection of Adapted Cultivars to Global Warming

Promising Olive Cultivars for Oil Production in Hawaii

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