Juglans × intermedia Carr. - an interesting finding in the Židlochovice Forest Enterprise

Hrib, Michal; Kobližek, J; Maděra, Petr

doi:10.17221/11915-jfs

Cited by 4 publications

(3 citation statements)

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“…Another striking feature is the occurrence and sometimes dominance of the invasive species Solidago gigantea. simultaneously, spontaneous hybrids of black and Persian walnuts (J. nigra × Juglans regia = Juglans × intermedia) were observed, which were described previously herein (Hrib et al 2002).…”

Section: Resultsmentioning

confidence: 55%

Effect of black walnut (Juglans nigra) on the understorey vegetation - a case study of South Moravian forests (Czech Republic)

Hrib¹,

Podrázský²,

Matějka³

et al. 2017

J. For. Sci.

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The article analyses the influence of black walnut on forest phytocoenosis in South Moravian forests and assesses how its representation may affect the understorey vegetation of the forest ecosystems. In July 2014, 31 relevés were processed in the South Moravian forests. These were stands of pure black walnut (Juglans nigra) as well as black walnut with small-leaved lime (Tilia cordata), along with neighbouring autochthonous stands (pure ash – European and narrow-leaved), oak (summer oak), or their mixtures. Ellenberg’s indicator values reveal differences in the plant communities under black walnut comparing those under native tree species for the variables nitrogen, soil reaction and temperature. In addition, total cover is significantly higher under walnut. Other differences are visible from the detrended correspondence analysis ordination. The study also confirmed that in the stands of black walnut the preference of some species is suppressed, for example Brachypodium sylvaticum and Poa nemoralis in alluvial forests and Melica uniflora in hilly forests.

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Section: Resultsmentioning

confidence: 55%

Effect of black walnut (Juglans nigra) on the understorey vegetation - a case study of South Moravian forests (Czech Republic)

Hrib¹,

Podrázský²,

Matějka³

et al. 2017

J. For. Sci.

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show abstract

“…These should inhibit some species, on the contrary e.g., grasses can be supported, this was registered in foreign as well as local studies to some extent (Willis 2000;Tokár & Krekulová 2002;Csiszár et al 2013;). The hybridization with J. regia is documented in some cases (Hrib et al 2002). Nevertheless, this species represents considerable potential contribution to high-value forestry.…”

Section: Discussionmentioning

confidence: 99%

Silvicultural potential of the main introduced tree species in the Czech Republic – review

Novotný,

Gallo,

Baláš

et al. 2023

Central European Forestry Journal

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Only 1.82% of the Czech forests are covered by the introduced (exotic, non-native) tree species, they represent only a very minor part of the forest area in the Czech Republic. Despite this fact under certain circumstances and locally, they can play an important role in the forest restoration of declined forests. The main non-native tree species used in the Czech Republic are: black locust (Robinia pseudoacacia L.), Douglas-fir (Pseudotsuga menziesii [Mirbel] Franco), grand fir (Abies grandis [Douglas ex D. Don] Lindl.), black walnut (Juglans nigra L.), northern red oak (Quercus rubra L.), and blue spruce (Picea pungens Engelm.). Other tree species are cultivated on very small areas, despite their much larger potential. The aim of the presented review paper is to summarize information on the introduced tree species, available especially from national sources, and give comprehensive information concerning the potential and risk of their use in the conditions of the Czech Republic. The authors mention also other tree species eligible for silviculture under current as well as future climatic circumstances. The current area and silvicultural potential in the climate changing conditions are analysed and summarized.

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“…Nevertheless, in Central and Eastern Europe, the interspecific walnut hybrids are almost unknown. There are stochastic observations in black walnut stands about interesting individuals with an intermediate morphology towards the common walnut [18], but most of the information is built around personal communication. On the other hand, only in Hungary, several 'hybrid-like' trees have been reported recently after a quick enquiry from different parts of the country.…”

Section: Introductionmentioning

confidence: 99%

Genetic Identification of Hybrid Walnuts (Juglans × intermedia Carr.) in Hungary, the Hidden Potential for Future Breeding

et al. 2022

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The question of the hybrid walnut (Juglans × intermedia Carr.) is still under debate in the Central European region. There is not simply just an underutilization, rather, even the existence of these hybrid forms is not broadly accepted. On the contrary, there is an intensive cross-breeding activity in the western part of Europe resulting in commercially available hybrid clones. In Hungary, several individuals have been reported with intermediate morphology from different old black walnut plantations. Due to the lacking information, a preliminary study was conducted in order to prove the difference of these selected trees and to test the hybrid state. For this purpose, DNA fingerprinting was used by applying 13 simple sequence repeat (SSR) markers for the identification of 22 hybrid genotypes selected from one study plot. A comparative analysis with a reference sample set of the ‘parental’ species and other known hybrids was performed as well. The genetic analysis resulted distinct, unique genotypes for all of the samples. Based on the genetic pattern, the analyzed hybrid group was clearly distinguishable from the other two walnut groups. The result of this study also highlights the hidden potential in walnut breeding in the Central European region. Future concepts concerning hybrid walnut utilization in plantation forestry, agroforestry or as breeding material are also discussed.

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Juglans × intermedia Carr. - an interesting finding in the Židlochovice Forest Enterprise

Cited by 4 publications

References 0 publications

Effect of black walnut (Juglans nigra) on the understorey vegetation - a case study of South Moravian forests (Czech Republic)

Effect of black walnut (Juglans nigra) on the understorey vegetation - a case study of South Moravian forests (Czech Republic)

Silvicultural potential of the main introduced tree species in the Czech Republic – review

Genetic Identification of Hybrid Walnuts (Juglans × intermedia Carr.) in Hungary, the Hidden Potential for Future Breeding

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