Floral biological investigations of apple cultivars in relation to fire blight

A tétel rövid nézete
dc.contributor.authorOrosz-Kovács, Zs.
dc.contributor.authorFarkas, A.
dc.contributor.authorBubán, T.
dc.contributor.authorBukovics, P.
dc.contributor.authorNagy Tóth, E.
dc.contributor.authorDéri, H.
dc.date.accessioned2021-06-28T09:58:52Z
dc.date.available2021-06-28T09:58:52Z
dc.date.issued2004-05-10
dc.description.abstractFloral activity was studied in two apple cultivars: an Erwinia-tolerant (Treedorn') and a sensitive one (`Sampion'). Since more types of protogyny occur in apples, the period of stigma activity is different. Papillae of the exposed stigma in flowers of 'Freedom' function longer (usually more than a week) than in the delayed homogamous `Sampion'. Despite of this, cv. 'Freedom' is tolerant to Erwinia amylovora (Burr.) Winslow et al., suggesting no relationship between the floral biological type (including the exposure and longevity of stigma) and the infection by E. amylovora. According to SEM micrographs, nectary stomata in `Freedom' are already open in the flower bud, where nectar secretion starts and continues until the senescence of the stigma. However, the long period of nectar secretion does not create optimal conditions for bacterial growth, since nectar production is scant in the flowers of 'Freedom'. The surface of the nectary, its nectar-retaining capacity, and the amount and concentration of nectar may influence the susceptibility of apple cultivars. It is manifested well by the smooth nectary surface with nectary stomata rising slightly above the epidermis in flowers of cv. 'Freedom', contrasting the wrinkled, striate nectary surface with slightly sunken stomata in the flowers of 'Sampion'.en
dc.formatapplication/pdf
dc.identifier.citationInternational Journal of Horticultural Science, Vol. 10 No. 2 (2004) , 9-14.
dc.identifier.doihttps://doi.org/10.31421/IJHS/10/2/454
dc.identifier.eissn2676-931X
dc.identifier.issn1585-0404
dc.identifier.issue2
dc.identifier.jatitleInt. j. hortic. sci.
dc.identifier.jtitleInternational Journal of Horticultural Science
dc.identifier.urihttps://hdl.handle.net/2437/314243en
dc.identifier.volume10
dc.languageen
dc.relationhttps://ojs.lib.unideb.hu/IJHS/article/view/454
dc.rights.accessOpen Access
dc.rights.ownerInternational Journal of Horticultural Science
dc.subjectappleen
dc.subjectErwinia amylovoraen
dc.subjectfloral biologyen
dc.subjectnectaryen
dc.subjectnectaren
dc.subjectnectary stomataen
dc.subjectstigmaen
dc.titleFloral biological investigations of apple cultivars in relation to fire blighten
dc.typefolyóiratcikkhu
dc.typearticleen
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International Journal of Horticultural Science (DE-journals)