Akademik Veri Yönetim Sistemi
FRESENIUS ENVIRONMENTAL BULLETIN, cilt.28, sa.3, ss.1952-1958, 2019 (SCI-Expanded)
Fire blight caused by Erwinia amylovora is a difficult disease to control and has a high destructive effect. There is no certain management practice against this disease. Prohibition of antibiotics, harmful effects of the proposed chemicals to the ecosystem and health, emergence of the residues in customs controls, and increasing organic farming tendency, make the use of resistant varieties, rootstocks, and interstocks increasingly more important in the control of the disease. For this purpose, 32 hybrid F-1 pear genotypes were evaluated for fire blight resistance and fruit quality characteristics and they were compared with their parents. How the maternal and pollinator parents transferring their features to the next generations also investigated. As a result of the study, among cultivars, 'Magness' found better for the transmission of fire blight resistance as maternal parent. Similar result obtained from 'Moonglow' as pollinator. 'Santa Maria' and 'Magness' transferring good fruit attractiveness, eating quality and shape while 'Williams' transferring irregular and rusty shaped genes as female parent. 'Akca' and 'Moonglow' hybrids' fruit is smooth and in the form of a pear-shaped bulb, cheeky on a yellow-green background. So they have good attractiveness with low stone cell amount. Hybrids of 'Conference' and 'Kaiser Alexandre' have smoothly shaped and finely textured fruits that are good in terms of eating quality but their surface are usually green coloured and rusty. Coloration of 'Guz', 'Tas' and 'Ankara' hybrids' fruit are also inadequate and they have high stone cell amount with irregular shape. As a conclusion of the study, registration of the genotypes which are found fire blight resistant and have superior fruit characteristics (29CD-4, 22CD-28, 29CD (7/6) and 29CD-14) is thought to contribute to fire blight disease management and pear cultivation.