BD6 - new Persian walnut genotype for backyard garden production

The Persian walnut (Juglans regia L.) is the most important shell fruit species in Hungary. Growing of this species became very popular during the past 10 to 15 years, today there are 6 100 ha commercial walnut orchards countrywide. The most grown cultivar is ‘Alsószentiváni 117’, its growing ratio is approximately 40% in the Hungarian orchards, followed by ‘Milotai 10’ with 33% growing rate. As a part of the walnut breeding program of the NARIC Fruitculture Research Institute we are interested in some genotypes can be useful for backyard garden production because the Hungarian costumers are looking for them.
The examination was made at the National Agricultural Research and Innovation Centre – Fruitculture Research Institute between 2012 and 2015. The experimental orchard was established by Prof. Péter Szentiványi in 1997, and it contains around 100 different genotypes derived from cross breeding program and selection from the local population. During the examination period the most important characteristics of the genotypes were examined, such as leafing-out time, blooming time, ripening time and physical parameters of the fruits.
Based on our results the BD6 genotype had early leafing out time and similar blooming time to the standard Hungarian cultivars like ‘Milotai 10’ and ‘Alsószentiváni 117’. Its blooming is protogynic, but homogamy can be observed during the blooming time. The ‘Pedro’ can be used for pollinator for genotype BD6. Its ripening time is first days of September, 5 to 10 days ahead of the most grown cultivars in the Hungarian production. The fruits are mostly on the terminal buds; its lateral bearing capacity is low. Fruits of genotype BD6 have elongated fruit shape; 32 to 34 mm in diameter, smooth shell surface, light brown or light yellowish brown shell colour, straw-coloured kernel, good taste, their kernel rate is around 50%. During organoleptic tests BD6 reached excellent values in the case of fruit size, shell colour and shell surface. Based on our results this genotype doesn’t show high susceptibility to Xanthomonas arboricola pv. juglandis.
Because of the early leafing out time we are not recommend this genotype for commercial growing.

Publications

Book of Abstracts

22nd Conference of Plant Breeding, Budapest. ISBN 978-963-396-085-1 Published: 10-03-2016

Details

Activity type

Publication in scientific journal (peer review)

Activity work package

Performance of new fruit varieties

Activity number

NARIC-WP2-A12

Activity contact

dr. Geza Bujdoso
NARIC Fruitculture Research Institute
BUdapest
Park u. 2
1223
Hungary
[email protected]

Activity partner

NARIC

Activity country

Hungary

Last edit

18-07-2017