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 F1 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.