Determination of some botanical, phenological, physical and chemical characteristics of walnut (Juglans regia L.) genotypes grown in Tureky

Abstract

Abstract. Botanical, phenological, physical and chemical characteristics of promising walnut (Juglans regia L.) genotypes grown in the Beyazsu region (Mardin) of Turkey were studied during years 2012-2013. The physical properties of genotypes were attributed to the quality criteria of nuts. Fruit weight (Fw1), kernel weight (Kw), fruit length (Fl), fruit witdh (Fw2), fruit height (Fh), kerrnel ratio (Kr) and shell thickness (St) were determined as 9. 67-15.68 g, 5.35-8.54 g, 5.35-8.54 g, 33.53-45.78 mm, 28.42-37.00 mm, 28.30-36.32 mm, 48.35-67.27 % and 0.66-1.40 mm, respectively. The kernel color (Kc) and fruit size (Fs2) were light yellow and ekstra of all the genotypes. The fruits were found to be rich in crude protein (Cp) and crude oil (Co). The total energy (Toe), moisture (Mo), total ash (Ta), crude oil (Co), crude protein (Cp) and total carbohydrate (Toc) contents were determined as 692. respectively. Fruitful laterals (Frl) ranged from 40 to 90% while harvest date (Hd) ranged from 10-15 September to 1-10 October. The flowering habits (Fh) observed as 6 protandrous, 6 protogynous and 2 homogamous of the promising genotypes. The results might contribute to breeding studies in order to identify better walnut genotypes, the commercial production for the farmers in the region, and healthy diets in future.

Genetic Diversity among Some Walnut (Juglans regia L.) Genotypes by SSR Markers

“…Numerous studies have been conducted on walnut fruits concerning biochemical, phytochemical, and antioxidant characteristics, and their contribution to human health and nutrition. Walnut kernel has a high amount of protein, fat, vitamins, minerals, and polyphenols, therefore, placing walnut in the human diet is inevitable [3,4]. Walnut has been also using in folk medicine due to its high antioxidant capacity [5] and alkaloids content with antimicrobial properties and ω-3 fatty acid concentration [6] for a long time.…”

Some Chemical and Physical Qualities of Cold-Adapted Promising Walnut Genotypes:turkey, Bingol Region

“…Apart from 12YE28 and 12YE29, the genotypes had total oil content of over 50%. Simsek et al [13] reported a higher total oil content of 63.63-66.78% for 12 promising genotypes in Bingol but in different districts. However, the average total oil content of the genotypes of the present study was ca.…”

“…Therefore, there is a wide genetic variation adapted to the ecological conditions of the region and having different characteristics from each other. There is only a little literature related to walnuts grown in the Bingol province [12][13][14].…”

Morphological to Molecular Markers: Plant Genetic Diversity Studies in Walnut (Juglans regia L.)—A Review

“…The reference standard cultivars such as Payne (phenologically early season variety), Hartley (phenologically midseason variety), Franquette (phenologically late season variety) or local check variety are frequently used to compare and characterize germplasm for phenological characters as these characters show high variability due to changes in agroclimatic conditions of the cultivation area (McGranahan and Forde 1985). The phenological characteristics of walnut genotypes and cultivars can vary with harvest year, environmental conditions, horticultural practices, and genetic characteristics, altitude, planting direction, plant age (Simsek et al, 2017, Akca et al, 2009Sutyemez et al, 2018). The phenological characters bud break and leafing date terms are used interchangeably but leafing date is the date when one of the leaves unfolds and occours few days after bud break.…”