Persian walnut breeding program at Naric Fruticulture Research Institute in Hungary

Bujdosó, G.; Izsépi, F.; Bartha, Károly; Varjas, Virág; Szentiványi, P.

doi:10.17660/actahortic.2020.1280.13

Cited by 5 publications

(6 citation statements)

References 8 publications

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“…Naphthoquinones showed strong correlations between budburst and blossom time, which are related to their yearly fluctuation; the earlier the budburst and blossom, the earlier their peak concentration can be reached [ 54 ]. The cultivars with late budburst and blossom time are the best for growers due to their lower susceptibility to walnut blight as described in some previous papers [ 68 , 69 , 70 ]. Fortunately, there is a strong correlation between the budburst and blossom time (0.79) too, as described by breeders [ 68 , 69 , 70 ].…”

Section: Discussionmentioning

confidence: 99%

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Effects of Phenolic Compounds on Walnut Bacterial Blight in the Green Husk of Hungarian-Bred Cultivars

Bujdosó

Lengyel-Kónya

Berki

et al. 2022

Plants

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The Persian walnut (Juglans regia L.) is the most grown nut tree crop in Central Europe. The aim was to study the full Hungarian walnut assortment with a distinct early spring phenology to detect the difference in phenolic profile in their green husks. Furthermore, the relationship between the presence and concentration of phenolic compounds and the tolerance/resistance of the observed cultivars to walnut bacterial blight was investigated. Examining the samples, significant differences were found between the concentrations of the different groups of phenolic compounds. Walnut blight immunity tests were also performed to clarify the role of phenolic compounds in the nut derived from a non-irrigated orchard. The Hungarian-bred local cultivars contained phenolic compounds in higher concentrations than the domesticated ones. There was a significant correlation between the budburst, as well as the pistillate flowers’ receptivity and the concentration of juglone. Cultivars with a low concentration of phenolic compounds were the most susceptible to walnut bacterial blight, except ‘Bonifác’.

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Section: Discussionmentioning

confidence: 99%

“…The cultivars with late budburst and blossom time are the best for growers due to their lower susceptibility to walnut blight as described in some previous papers [ 68 , 69 , 70 ]. Fortunately, there is a strong correlation between the budburst and blossom time (0.79) too, as described by breeders [ 68 , 69 , 70 ].…”

Section: Discussionmentioning

confidence: 99%

Effects of Phenolic Compounds on Walnut Bacterial Blight in the Green Husk of Hungarian-Bred Cultivars

Bujdosó

Lengyel-Kónya

Berki

et al. 2022

Plants

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“…The basis of the Hungarian walnut assortment is provided by the selected varieties derived from the Carpathian race [ 1 , 2 ], which selections are thought to be native/indigenous [ 3 ]. These genotypes have unique characteristics [ 4 ], such as early ripening time and large fruit size [ 5 ].…”

Section: Introductionmentioning

confidence: 99%

“…Unfortunately, old cultivars are missing from the contemporary breeding programs of many countries. However there are also some exceptions such as China [ 9 , 10 ], Hungary [ 2 ], Iran [ 11 ], Kazakhstan [ 12 ], New Zealand [ 13 ], Romania [ 14 , 15 ], Serbia [ 16 ], Slovenia [ 17 ] and the United States of America [ 18 ]. Apart from the previously mentioned old walnut genotypes, Esterhazy II (syn: Eszterházy II, Eszterházi 2, Estherházai II, E II) still has importance.…”

Section: Introductionmentioning

confidence: 99%

Is “Esterhazy II”, an Old Walnut Variety in the Hungarian Gene Bank, the Original Genotype?

Bujdosó

Illés

Varjas

et al. 2021

Plants

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The old walnut (Juglans regia L.) genotype called “Esterhazy II” was well-known in the Austro-Hungarian Monarchy before World War II, and it can still be found in the Austrian, German and Swiss backyard gardens today. Unfortunately, nowadays, vegetatively propagated progenies of the original “Esterhazy II” are not available anymore around the world because walnut grafting started later than this genotype had become well-known. Although various accessions with “Esterhazy II”-“blood“ are available, it is difficult to determine which one can be considered true or the most similar to the original one. In this paper, phenological and nut morphological characteristics of an “Esterhazy II” specimen planted in a Hungarian gene bank were compared to the varieties “Milotai 10” and “Chandler”. Examined characteristics were: budbreak, blossom time, type of dichogamy, ripening time, nut and kernel features. An additional SSR fingerprinting was used to identify identical genotypes and to demonstrate the relatedness of the analyzed “Esterhazy II” genotype to the other Hungarian walnut cultivars. It can be concluded that under the name “Esterhazy II”, several different genotypes can be observed. All the checked characteristics except budbreak fitted well with the previous descriptions. Our results confirmed that the examined “Esterhazy II” genotype shows high similarity to the “original“ “Esterhazy II” described in the literature.

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“…Evidenţierea diferitor calităţi ale nucilor permite selectarea de biotipuri preţioase-candidaţi la soiuri pentru diferite destinaţii de utilizare în industria alimentară etc. În diferite ţări [2,3,7,8]. Cel mai important lucru în direcţia depăşirii parametrilor de performanţă şi calitate se poate considera selectarea și implementarea genotipurilor de nuc evidențiate ce posedă plasticitate ecologică şi adaptabilitate largă la condiţiile de mediu [3,7,8], capacitate de fructificare din mugurii laterali şi terminali, a genotipurilor cu dezmugurire și înflorire feminină foarte tardivă.…”

Section: Introducereunclassified

Cercetări privind diversitatea genofondului nucului (Juglans regia L.) în Republica Moldova

Pintea¹,

Cozmic²,

Mapelli³

2021

Genetics, Physiology and Plant Breeding

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In the article there are presented some results of morphological and ecological researches of wal-nut (Juglans regia L.) genotypes, selected in different pomological zone of Rep. Moldova. Obtained data shows manifestation of different characteristics like flowering period, dichogamous types, manifestation of capacity to develop pistillate flowers from lateral buds, as well as capacity of formation of fruits from lateral buds.

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Persian walnut breeding program at Naric Fruticulture Research Institute in Hungary

Cited by 5 publications

References 8 publications

Effects of Phenolic Compounds on Walnut Bacterial Blight in the Green Husk of Hungarian-Bred Cultivars

Effects of Phenolic Compounds on Walnut Bacterial Blight in the Green Husk of Hungarian-Bred Cultivars

Is “Esterhazy II”, an Old Walnut Variety in the Hungarian Gene Bank, the Original Genotype?

Cercetări privind diversitatea genofondului nucului (Juglans regia L.) în Republica Moldova

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