Moldovan walnut (Juglans regia L.) biotypes studies from different pomological zones
Abstract. The studies were focused on evaluation of perspective local walnut biotypes, selected from different natural populations of local pomological zones (North, North-West, Central and partially South) of the Republic of Moldova. The whitest shell color and high index of kernel/endocarp relation: 45-59% of kernel were noticed at 13 biotypes of north zone. Most of the biotypes had a moderate kernel fill and shriveling score. In the same time the highest score of aroma, flavor and sweetness intensity was noted in central pomological zone (1Cmd, 2Cmd, 3Cmd, 17Cmd). In general bitterness, puckeriness and sweetness assessments greatly change among local varieties and biotypes. Crispness rating of the biotypes was almost the same in all zones. Thus, we suppose the existence of genetically important walnut (Juglans regia L.) genetical resources within Moldovan investigated area.
Key words: Juglans regia; Biotypes; Fruit; Organoleptic properties; Fatty acids; Republic of Moldova.
2. BUJDOSÓ, G., IZSÉPI, F., SZÜGYINÉ BARTHA, K., VARJAS, V., SZENTIVÁNYI, P. (2020). Persian walnut breeding program at Naric Fruticulture Research Institute in Hungary. In: Acta Horticulturae. vol. 1280, pp. 89-94. DOI: 10.17660/ActaHortic.2020.1280.13
3. BUJDOSÓ, G., CSEKE, K. (2021). The Persian (English) walnut (Juglans regia L.) assortment of Hungary: nut characteristics and origin. In: Scientia Horticultuae. vol. 283(39). DOI: https://doi.org/10.1016/j.scienta.2021.110035.
4. MALVOLTI, M.E., POLLEGIONI, P., BERTANI, A., MAPELLI, S., CANNATA, F. (2010). Juglans regia provenance research by molecular, morphological and biochemical markers: a case study in Italy. In: Bioreme¬diation, Biodiversity and Bioavailability, vol. 4, pp. 84-92.
5. MC GRANAHAN, G. and LESLIE, C.A. (1991). Walnuts (Juglans). In: J.N. Moore and J.R.Jr. Ballington, eds. Genet-ic resources of temperate fruit and nut crops. International Society for Horticultural Science, Wageningen, pp. 907-951.
6. MOSIVAND, M., HASSANI, D., PAYAMNOUR, V., JAFAR AGHAEI, M. (2013). Comparison of tree, nut, and kernel characteristics in several walnut species and inter-specific hybrids. In: Crop Breeding Journal, vol. 3, no. 1, pp .25-30.
7. PINTEA, M. (2004). Walnut: reproductive biology. Chisinau: F.E.-P.Central Printing. 366 p. (in Romanian).
8. PINTEA, M., BALAN, V., CIMPOIES, G. (2014). Following walnut footprints in Republic of Moldova. In: D. Avanzato et al., eds. Following walnut footprints (Juglans regia L.) cultivation and culture, folklore and history, traditions and uses. Leuven, International Society for Horticultural, Scripta horticulturae, vol. 17, pp. 203-211. ISBN 978-94-6261-003-3.
9. UPOV (1999). Guidelines for the conduct of tests for distinctness, uniformity and stability. Walnut (Juglans regia L.). Geneva, 34 p. Available: http://www.upov.org/en/publications/tg-rom/tg125/tg_125_6.pdf
10. ÜNVER, H., SAKAR, E., SÜLÜŞOĞLU, M. (2016). Determination of pomological and morphological characteristics with fatty acid composition of high kernel ratio walnut genotypes. In: Erwerbs-Obstbau, vol. 58(1), pp. 11–18. ISSN 0014-0309.
11. WARMUND, M.R., ELMORE, J.R., ADHIKARI, K., MCGRAW, S. (2009). Descriptive sensory analysis of light, medium, and dark colored kernels of black walnut cultivars. In: Journal of the Science of Food and Ag¬riculture, vol. 89, pp. 1969–1972. ISSN:1097-0010.
12. YUEMEI, C., JUNMIN, D., CAIHONG, Z. (2014). The analysis on fat characteristics of walnut varieties in different production areas of Shanxi Province. In: Journal of Plant Studies, vol. 3, no. 1, pp. 28-34.
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