Winter Hardiness of Plum on Different Rootstocks in Winter 2002/2003 in Estonia

Jänes, H.; Klaas, L.; Pae, Ahran

doi:10.17660/actahortic.2007.734.38

Cited by 6 publications

(3 citation statements)

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“…Erem.) is well known in the Baltic states and some other neighbouring counties (Jänes et al, 2007;Dçíena et al, 2017). It was well appreciated for its early ripening fruits.…”

Section: Discussionmentioning

confidence: 92%

Plum Cultivar Evaluation on Myrobalan Rootstock in Lithuania

Lanauskas

Kviklys

Uselis

et al. 2019

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

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Twenty plum cultivars on Myrobalan (Prunus cerasifera Ehrh.) seedling rootstock were tested in 2012–2017 at the Institute of Horticulture of the Lithuanian Research Centre for Agriculture and Forestry. Plum trees were spaced at 4.5 × 2.5 m and trained as spindles. Orchard floor management included frequent mowing of grass in the alleyways with herbicide strips along tree rows. ‘Duke of Edinburgh’, ‘Kijevas Vēlā’, ‘Dąbrowicka Prune’, ‘Čačanska Najbolje’, ‘and ‘Štaro Vengrinė’ cultivars were the most vigorous plum trees at the end of 6th year. Their trunk diameter achieved 92–96 mm. ‘Valor’, ‘Queen Victoria’, ‘Herman’, ‘Čačanska Najbolje’, ‘Favorita del Sultano’, ‘Ave’, and ‘Jubileum’ cultivars had the lowest trunk diameter — 72–78 mm. The highest cumulative yield of four fruiting years was recorded for ‘Kometa’ and ‘Violeta’ cultivars, respectively, 43.0 and 46.5 kg/tree. ‘Favorita del Sultano’, ‘Rausvė’, and ‘Kijevas Vēlā’ produced the largest fruits — 52–60 g. The smallest fruit occurred on ‘Dąbrowicka Prune’ and ‘Herman’ cultivars, respectively, 22 and 25 g. ‘Dąbrowicka Prune’ had the highest soluble solids content (SSC) — 19.5%. The least SSC was recorded in ‘Kometa’, ‘Violeta’ and ‘Herman’ fruits — 10.6–11.8%. ‘Renklod Rannij Doneckij’, ‘Čačanska Najbolje’, and ‘Valor’ cultivars had the highest fruit flesh firmness.

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“…Erem.) is well known in the Baltic states and some other neighbouring counties (Jänes et al, 2007;Dçíena et al, 2017). It was well appreciated for its early ripening fruits.…”

Section: Discussionmentioning

confidence: 92%

Plum Cultivar Evaluation on Myrobalan Rootstock in Lithuania

Lanauskas

Kviklys

Uselis

et al. 2019

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

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“…The cultivar has a high importance in flower bud winter hardiness. In a study on evaluation of rootstocks in Estonia, during spring 2004, the home plum cultivar 'Victoria' had all flower buds damaged by frosts, whereas the diploid plum cultivar 'Kubanskaya Kometa' was less damaged and produced fruits (Jänes et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Influence of Rootstocks on Winter-Hardiness of Plum Generative Buds During the Wintering Period in Two Growing Regions

Dēķena

Alsiņa

Laugale

et al. 2019

Proceedings of the Latvian Academy of Sciences. Section B. Natural, Exact, and Applied Sciences.

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The selection of appropriate rootstock is the main precondition for obtaining a high yielding and sustainable plum orchard. In the Northern climate, plum overwintering is especially important, where winter hardiness of flower buds is one of indicators. This investigation was carried out during three wintering periods (2010–2013) at the Institute of Horticulture in Pūre (Latvia) and the Polli Horticultural Research Centre (Estonia), in orchards planted in 2001. The aim of the investigation was to evaluate the influence of different rootstocks on the viability of flower buds during winter for two plum cultivars in two growing regions. European plum ‘Victoria’ and hybrid plum ‘Kubanskaya Kometa’ grafted on eight clonal and eight seedling rootstocks were used in the investigation. Bud samples were taken two times during winter: end of January and end of March. The viability of flower buds and flowering intensity were determined in the laboratory. The viability was determined as dehydrogenase activity using triphenyl tetrazole chloride (0.5%), where in living cells the colourless substance due to enzymatic activity turns into a brightly coloured product — formasan. The optical density of colour was determined with a spectrophotometer at 485 nm. Both cultivars ‘Kubanskaya Kometa’ and ‘Victoria’ had higher flower bud viability in Polli compare to Pūre. In both growing regions, the highest activity of dehydrogenases for cultivar ‘Kubanskaya Kometa’ was on rootstocks ‘Myrobalan’, ‘St. Julien INRA 2’, ‘Wangenheims Zwetsche’ and for cultivar ‘Victoria’ — on rootstocks ‘Ackermann’, ‘Brompton’ seedlings, and ‘St. Julien d’ Orleans’. The dehydrogenase activity of in flower buds had a tendency to decrease during winter.

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“…Deviations of meteorological conditions from the long term observations are registered in Latvia and Estonia during the last decades caused by global climate changes -winters become unstable with frequent thaws followed by rapid decrease of temperature. It has a very negative influence on the trees wintering (Jänes, Klaas et al, 2007, Tyurina, Demenko et al, 2000. Also, soil freezing through is not observed during last years.…”

Section: Introductionmentioning

confidence: 99%