Abstract
In this selection survey that was performed to select the types with superior properties among the population of seedling walnut trees in Çankırı location, fruit samples were collected individually from 67 trees. Than these types were evaluated for fruit and tree properties and eight walnut types with fruit weight between 11.90 and 15.83 g, interior weight between 6.66 and 8.82 g, the interior ratio between 53.06 and 60.41 %, shell thickness between 1.21 and 1.50 mm were selected as promising. For these types the shell color was determined as dark in two types and tawny in six types. The inner color was found to be light yellow in four types and dark yellow in four types. The selected types were in a good condition for full and sound interior ratio. Seven types gave 100 % full and sound inner. Whereas one type gave 20 % empty fruit. Four types showed homogamous blooming, one types showed protandrous blooming and three types displayed protogynous blooming. The total oil content of selected types varied from 43.16 to 58.68 %. The range of fatty acid contents in the fruits of these types were also determined between 50.83 and 60.77 % for linoleic acid, between 16.14 and 26.44 % for oleic acid, between 5.42 and 7.29 % for palmitic acid, between 11.08 and 14.25 % for linolenic acid and between 1.70 and 2.55 % for stearic acid.
Zusammenfassung
Um Typen mit hervorragenden Eigenschaften aus der Sämlingspopulation von Walnussbäumen des Standortes Çankırı zu selektieren, wurden von 67 Bäumen Fruchtproben entnommen. Anschließend wurden diese Typen auf Frucht- und zusätzlich auf Baumeigenschaften evaluiert. Acht Walnuss-Typen mit einem Fruchtgewicht zwischen 11,90 und 15,83 g, einem Nusskerngewicht zwischen 6,66 und 8,82 g, einem Verhältnis von Nusskern zu Nussschale von 53,06 bis zu 60,41 % und einer Stärke der Nussschale zwischen 1,21 und 1,50 mm wurden als erfolgsversprechend angesehen. Die Farbe der Nussschalen wurde bei 2 Typen als dunkelbraun und bei 6 Typen als hellbraun beschrieben. Die Farbe des Nusskerns wurde bei 4 Typen als hellgelb und bei 4 Typen als dunkelgelb bestimmt. Die selektierten Typen hatten in der Regel Nussfrüchte, die mit ganzen und unversehrten Nusskernen gefüllt waren. 7 Typen hatten eine vollständige Füllung. Ein Typ war zu 20 % weniger gefüllt. 4 Typen zeigten ein homogames Verhalten während der Blüte, ein Typ ein proterandrisches Verhalten und 3 Typen ein protogynes Verhalten. Der Gesamtölgehalt der selektierten Typen variierte von 43,16 bis zu 58,68 %. Der Anteil der Fettsäuregehalte in der Früchten der beschriebenen Typen lag bei Linolsäure zwischen 50,83 und 60,77 %, bei Ölsäure zwischen 16,14 und 26,44 %, bei Palmitinsäure zwischen 5,42 und 7,29 %, bei Linolensäure zwischen 11,08 und 14,25 % und bei Stearinsäure zwischen 1,70 und 2,55 %.
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Ünver, H., Sakar, E. & Sülüşoğlu, M. Determination of Pomological and Morphological Characteristics with Fatty Acid Composition of High Kernel Ratio Walnut Genotypes. Erwerbs-Obstbau 58, 11–18 (2016). https://doi.org/10.1007/s10341-015-0249-3
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DOI: https://doi.org/10.1007/s10341-015-0249-3