Characterization of Oleaster-Leafed Pear (Pyrus elaeagrifolia Pall. subsp. elaeagrifolia) Fruits in Turkey

Oleaster-leafed pear (Pyrus elaeagrifolia Pall. subsp. elaeagrifolia) fruits are used for food and dietary supplements in Turkey, and seedlings are used as rootstock for pear cultivars. Information on the effect of genotypes on oleaster-leafed pear fruit characteristics is needed in order to optimize production of quality food and dietary supplements. The characteristics of oleaster-leafed pear fruits relative to genetic background were evaluated from 16 wild grown oleaster-leafed pear genotypes at eastern Turkey. Genotype influenced ripening dates, fruit weight, fruit length/width ratio, fruit pedicel length, fruit flesh texture, fruit firmness, the number of seeds per fruit, soluble solid content, titratable acidity, total phenolic content, total flavonoid content and antioxidant activity. Analysis of the data obtained from 16 oleaster-leafed pear genotypes demonstrated a highly significant influence of genotype on fruit characteristics. The genotypes G12, G13 and G9 had the highest fruit weight (19.22, 18.54 and 18.30 g) and G9 the highest total phenolic content (122 mg gallic acid equivalent/100 g fresh fruit). The genotypes G3, G5, G11 and G13 had the slightly sandy fruit flesh texture and those genotypes may be good selections for processing and producing health oleaster-leafed pear products.

Особенности выращивания сеянцев семенных подвойных форм груши в Крыму

Приведены результаты изучения влияния сроков посева семян груши обыкновенной (Pirus communis L.), лохолистной (Pirus elaeagrifolia Pall), иволистной ( Pirus salicifolia Pall) и груши Бретшнейдера (Сян-Ли, Мин-Юэ- Ли, Цзы- Ли, Чан-Бай- Ли) на всхожесть и рост сеянцев в школе сеянцев в условиях предгорной части Крыма. Определено, что оптимальным сроком посева семян груши лохолистной и иволистной является третья декада октября груши Бретшнейдера первая половина ноября семена груши обыкновенной лучше сеять в февральские окна, которые присущи погодным условиям полуострова. При выполнении сроков посева всхожесть семян составляет 45 53 6772 85 соответственно, при этом большая часть растений соответствует стандартам, т.е. диаметр условной корневой шейки составляет 410 мм.The paper summarizes study findings on the influence of seeding time on germination and seedlings growth in a nursery in the conditions of piedmont part of Crimea for common peer (Pirus communis L.), oleaster pear (Pyrus elaeagnifolia Pall), willowleaf pear (P. salicifolia Pall) and Bretshneider pear (Syan-Li, Min-Yue-Li, Tsy-Li, Chan-Bay-Li).The study determined the third decade of October to be the optimal planting time for Pyrus elaeagrifolia Pall and Pyrus salicifolia Pall for Bretshneider pear, the best planting time is the first decade of November for Pyrus communis L. the best planting timeframe is February windows (a period of warm weather in February typical for the climate of the peninsula). The timeliness of the seeding ensures seed germination at45 53 6772 85, respectively. Furthermore, the majority of the plants develop up to standard, specifically: the diameter of the nominal root collar makes 410 mm.