Document Type : Research paper
Authors
1 Department of Horticulture, University of Tokat Gaziosmanpaşa, Tokat, Turkey
2 Department of Biology, International Hodja Ahmet Yesevi Turkish-Kazakh University, Kazakhstan
3 Department of Horticulture, College of Aburaihan, University of Tehran, Tehran, Iran
Abstract
Kazakhstan has very rich walnut genetic resources; however there is no ongoing walnut breeding program. Kazakhstan government has several projects in cooperation with Russia, USA, Bulgaria, Czech Republic and Poland for plant breeding purposes. In the present research walnut genetic resources originated from Jabağıl, Tulkıbas, Sayram, Lenger, and Botanical Garden of International Hodja Ahmet Yesevi Turkish-Kazakh University of Kazakhstan were evaluated during 2015-2018. In the pre-selection stage, 47 genotypes were selected according to their lateral bearing, disease and pest tolerance. In the next step, 10 genotypes with high nut quality and high yield were selected. These genotypes were grafted onto seedling walnut rootstocks in Turkey. All of the grafted genotypes had fruit at the first year. Among 47 genotypes, we recorded nut weight between 6.21-15.18 g, kernel weight 2.36-6.64 g, kernel percentage 33.55-70.96% and average nut length 2.61-4.19 cm and nut diameter between 2.65 to 3.39 cm. The selected genotypes have been found to have very low fruit quality compared to commercial walnut varieties in the world. However, these genotypes have been evaluated as a good genetic resource for lateral bearing which can be used in breeding programs.
Keywords
2. Amiri R, Vahdati K, Mohsenipoor S, Mozaffari M.R, Leslie C.A. 2010. Correlations between some horticultural traits in walnut. HortScience. 45(11):1690–1694.
3. Anonymous 1996. Plant Protection Standard, Trial Methods. (2):176-177. Ankara.
4. Anonymous 1999.UPOV Guidelines for the conduct of tests for distinctness, uniformity and stability ‘Walnut’ Juglans regia L, Geneva
5. Anonymous 2016. http://ucanr.edu/repositoryfiles/2015-003-160260. pdf.
6. Anonymous 2020. https://tr.climate-data.org/asya/kazakistan/south-kazakhstan-province/ tuerkistan -2077/climate-table
7. Arzani K, Mansouri H.A, Vezvaei A, Roozban M.R. 2008. Morphological variation among Persian walnut (Juglans regia) genotypes from central Iran. New Zealand Journal of Crop and Horticultural Science. 36:159-168.
8. Ashımov K. 2014. Cостояние Орехово-Плодовых Лесов Южной Киргизии (Status of the Walnut Forests of South Kyrgyzstan). Vestnik, УДК: 634.
9. Aslantaş R. 2006. Identification of superior walnut (Juglans regia) genotypes in north‐eastern Anatolia, Turkey. New Zealand Journal of Crop and Horticultural Science, Vol. 34: 231-237.
10. Çelebioglu G, Ferhatoglu Y, Burak M. 1988. Population, selection and plantation of walnut in Turkey. International Conference on Walnuts, Atatürk Central Horticultural Research Institute, Yalova, Turkey. Pp. 83-87.
11. Ebrahimi A, Fattahi Moghadam M.R, Zamani Z, Vahdati K. 2009. An investigation on genetic diversity of 608 Persian walnut accessions for screening of some genotypes of superior traits. Iranian Journal of Horticultural Sciences. 40(4):83-94.
12. Eskandari S, Hassani D, Abdi A. 2006. Investigation on genetic diversity of Persian walnut and evaluation of promising genotypes. Acta Horticulture. 705: 159-166.
13. Germain E. 1997. Genetic improvement of the Persian walnut (Juglans regia L.). Acta Horticulture. 442: 21-31
14. Hassankhah A, Vahdati K, Rahemi M, Hassani D, Sarikhani K.S. 2017. Persian walnut phenology: Effect of chilling and heat requirements on bud break and flowering date. International Journal of Horticultural Science and Technology, 4: 259-271.
15. Khodadadi F, Tohidfar M, Mohayeji M, Dandekar A.M, Leslie CA, Kluepfel D, Butterfield T, Vahdati K. 2016. Induction of polyphenol oxidase in walnut and its relationship to the pathogenic response to bacterial blight. Journal of the American Society for Horticultural Science. 141: 119-124.
16. Khorami S.S, Arzani K, Karimzadeh G, Shojaeiyan A, Ligterink W. 2018. Genome size: A novel predictor of nut weight and nut size of walnut trees. HortScience, 53: 275-282.
17. Kondratenko PV, Satina GM, Zatokovy FT, Satina LF. 2006. Genetic Fund of the Persian Walnut in the Prydnistrovya- Prykarpathian
102 Int. J. Hort. Sci. Technol; Vol. 7, No. 2; June 2020
Region of Ukraine. Pro. Acta Horticulture 705: 111-116.
18. Küden A, Kaşka N, Türemiş N. 1997. Walnut selection in Middle Taurus Mountains. Acta Horticulturae 442: 117-119.
19. Mamatzhanov D. 2005. Рекомендации По Внедрению Лучших Сортов и Форм Ореха Грецкого (Suggestions for Growing of Promising Walnut Varieties and Types. Bishkek, ISBN 9967-23-115-7.
20. Mohammadi A, Vahdati K, Abdousi V, Najaf Abadi F, Mahmoudi M.J. 2015. Identification of some walnut genotypes in Lorestan province of Iran and selection of 54 superior genotypes. Journal of Crop Production and Processing, 5: 25-36.
21. Muratbek Kyz A. 2016. Determination of promising walnut types in Kyrgyzstan’s Zhal abad province, Kara-Alma Forest area. MSc Thesis, Akdeniz University.
22. Oğuz H.I. 1998. Studies on walnut breeding by selection in Ermenek District. PhD Thesis YYÜ University.
23. Özaktan H, Mısırlı A, Erdal M, Akköprü A, Aslan E, Bozkurt A. 2011. Bacterial diseases of
stone fruits and nuts (Stone fruit health), Report of COST Action Project. Project Number: 873
24. Sharma S.D, Sharma O.C, Gautam D.R. 2006. Studies on the variability in nut characters of selected trees growing in different location of Himachal Pradesh. Indiana. Acta Horticulture, 705: 167-171.
25. Shevchenko V. 1976. Формовое Разнообразие и Селекция Ореха Грецкого в Южной Киргизии (Variations and selection of walnut types in walnut forests of south Kyrgyzstan). İlim, Frunze, 9: 63-64.
26. Vahdati K, Arab M.M, Sarikhani Khorami S, Sadat Hosseini M, Leslie C.A, Brown PJ. 2019. Advances in walnut (Juglans regia L.) breeding strategies, Chapter 13. In: JM Al-Khayri, SM Jain and DV Johnson (eds.) Advances in plant breeding strategies, Vol 4. Nut and Beverage Crops. Springer, Switzerland.
27. Zeneli G, Kola H, Dida M. 2005. Phenotypic variation in native walnut populations of Northern Albania. Scientia Horticulturae, 105: 91–100.
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