Selection of Superior Walnut Types With Lateral Bud Fruitfulness and High Nut Quality

The aim of this research is to protect genetic resources and to select new types of walnuts in Turhal and Zile walnut populations. Turkey is one of the most important producers of walnut in the world. In 2017, Turkey ranked fourth in world production with 190000 t of production. Juglans regia L. is a very important species commercially grown in Turkey. 55 walnut genotypes grown from seeds and having the lateral bud fruitfulness in walnut population were examined in Turhal and Zile regions. As a result of this examination, 21 genotypes were selected Promising walnut genotypes were selected according to by weighted-rankid method. The percentage of lateral bud fruitfulness of selected types is determined between 35 % (60-TR-12) and 85 % (60-ZL-01). The average of nut weight ranged between 8.16 g (60-TR- 16) and 14.71 g (60-TR-03), kernel weight changed between 3.98 g (60-TR-16) and 7.40 g (60-ZL-01), nut length was determined 26.41 mm (60-ZL-06) and 42.50 mm (60-TR- 07), nut suture 22.25 mm (60-ZL-06) - 34.58 mm (60ZL-04), nut cheek 23.77 mm (60- ZL-06) - 35.58 mm (60-ZL-02), shell thickness ranged from 0.36 mm (60-TR- 22) to1.48 mm (60-TR-03).

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  • Abdiş A 2010. Breeding walnuts growing in Taşköprü, Tosya town of Kastamonu Province, Ordu University, Graduate School of Natural and Applied Sciences Graduate Thesis Page: 64
  • Akça Y, and Özongun S (2004). Selection of late leafing, late flowering, laterally fruitful walnut (Juglans regia L.) types in Turkey. New Zealand Journal of Crop and Horticultural Science 32(4), 337-342.
  • Akça Y (2005). Determination an overview of selection breeding studies carried out in Turkey and definition of characteristics for selection breeding of walnut. Bahçe 34, 29-34.
  • Akça Y, Bilgen Y, and Ercisli S (2015). Selection of Superior Persian Walnut (Juglans regia L.) from Seedling Origin In Turkey, Acta Sci. Pol. Hortorum Cultus, 14(3) 2015, 103-114
  • Akça Y, Sütyemez M, Yilmaz S, and Karadağ H (2016). The new walnut variety breeding program in Turkey. VII International Scientific Agriculture Symposium Jahorina, pp: 461-466 October, 06-09-2016.
  • Anonymous (2016). FAO (2016) http://www.fao. org/Statistical Databases. Accessed on 05/03/2017
  • Aslansoy B (2012). Studies on breeding by selection of walnuts (Juglans regia L.) in Sultandağı (Afyon) Location. KonyaSelçuk University, Graduate School of Natural and Applied Sciences graduate thesis Page 147s.
  • Asma B.M (2012). Pomological and phenological characterization of promising walnut (Juglans regia L.) genotypes from Malatya, Turkey, Acta Sci. Pol., Hortorum Cultus. Vol. 11. No 4, pp. 169-178.
  • Beyhan Ö (2009). Relationships researches on breeding by selection of walnut (Juglans regia ) forms in Akyazi Province Bahçe 38 (2): 1 – 8.
  • Ebrahimi A, Khadivi-Khub A, Nosrati Z, and Karimi R (2015). Identification of superior walnut (Juglans regia) genotypes with late leafing and high kernel quality in Iran, Scientia Horticulturae Volume 193, 22 September 2015
  • Germain E (1988). Use of The Late Leafing Characters in a Walnut Variety Breeding Program, Intern. Confer. on Walnuts., p: 95-98, Yalova-Turkey.
  • Germain E (1989). Inheritance of Late Leafing and Lateral Bud Fruitfulness In Walnut Phenotypic Correlations Among Some Traits Of the Trees. First International Symposium on Walnut Production. Sept. 25- 29 Acta Hort. P:125- 143 Budapest, Hungary.
  • İmamoğlu A (2015). Walnut (Juglans regia L.) selection in Nevşehir province center, Avanos and Ürgüp towns Erciyes University, Graduate School of Natural and Applied Sciences graduate thesis Page: 104.
  • Kalan C (2011). Selection of walnuts (Juglans regia L.) naturally grown in Bingöl Yüzüncü Yıl University, Graduate School of Natural and Applied Sciences graduate thesis Page: 98s.
  • Khadivi-Khub A, Ebrahimi A, and Mohammadi, A (2015). Characterization and selection of walnut (Juglans regia L.) genotypes from seedling origin trees Tree Genetics & Genomes, 11:54.
  • Kırca S, Yarılgaç T, Kırca L, and Bak T (2014). Study on the selection of walnut (Juglans regia L.) in Trabzon, Turkish Journal of Agricultural and Natural Sciences. Special Issue No 1, pp. 835:841.
  • Öztürkci B (2015). Selection of walnuts (Juglans regia L) grown naturally in the district of (Malatya) Hekimhan, Yüzüncü Yıl University, Graduate School of Natural and Applied Sciences graduate thesis Page: 57.
  • Şimsek M and Osmanoğlu A (2010). Selection Selection of Native Walnuts (Juglans regia L.) in Mazıdağı (Mardin) (YYU J AGR SCI) 2010,20(2): 131-137
  • Turgut Y (2014). Selection of walnuts (Juglans regia L) grown naturally in the district of Beyazsu (Midyat-Mardin) Bingöl University, Graduate School of Natural and Applied Sciences graduate thesis Page: 62
  • UPOV (1988). Walnut/ Noyer/ Walnuss, 88-07-01. International union for the protection of new varieties of plants/TG/125/1 (Prog.). Geneva, Switzerland
  • Yarılgaç T, Kazankaya A, Balta M.F and Özrenk K 2005. Morphological and pomological characteristics of walnuts (Juglans regia L.) Grown in central van province, BAHÇE 34 (1): 101 – 107
  • Yılmaz S (2007). Selection of late leafing and laterally fruitful walnut types (J. regia L.) by selection from native population Gaziosmanpaşa University, Graduate School of Natural and Applied Sciences PhD Page:166.