Influence of plant growth regulators on sex differentiation and floral characteristics of pomegranate flowers: a case of brassinosteroids

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dc.contributor.authorGokbayrak, Zeliha
dc.contributor.authorEngin, Hakan
dc.date.accessioned2025-01-27T20:29:29Z
dc.date.available2025-01-27T20:29:29Z
dc.date.issued2018
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe objective of the present study was to determine the effects of brassinosteroid application on the sex determination and floral growth of pomegranate flowers. Whole tress of Punica granatum 'Mayhos-8' were sprayed with 0.001, 0.01, and 0.1 mg L-1 28-homobrassinolide (Hbr) at bud break. The selection of flowers was based on the appearance of a visible pistil/stigma and shape of the ovary of intact flowers. Grouping of bisexual flowers was based on their flower position, i.e., single, terminal, and lateral flowers, during the first flush of flowering in mid-June. Approximately 20 days and 40 days after spraying, 100 randomly chosen bisexual flowers per collection time were collected and measurements of floral parts were immediately taken. The differences between bisexual and functional male flowers were not distinct enough to assert any significant effects from the different Hbr treatments. Irrespective of treatments, the percentage of male flowers was higher than that of bisexual flowers. Hbr treatments applied at the bud break period had significant effects only on bisexual flowers that developed as single flowers. Applying 0.01 mg L-1 Hbr produced comparably lower percentages of single bisexual flowers (53.4%). Although the 0.1 and 0.001 mg L-1 Hbr treatments resulted in increased percentages of bisexual flowers, the difference was not significant. For the first collection time (mid-June), the effects of Hbr concentration on the size of the floral parts for bisexual flowers were only significant in ovary width and stigma diameter. As the concentration decreased, smaller ovaries were obtained. During the second flowering, application of 0.01 mg L-1 Hbr considerably increased the overall sizes of floral parts in bisexual flowers. Hbr might affect the ratio of flower formation in certain positions on a branch and could influence the growth of floral parts in bisexual flowers. Further elucidation of these effects would help to better understand floral organ development in plants.
dc.identifier.doi10.5586/asbp.3589
dc.identifier.issn0001-6977
dc.identifier.issn2083-9480
dc.identifier.issue3
dc.identifier.scopus2-s2.0-85054969293
dc.identifier.scopusqualityQ3
dc.identifier.urihttps://doi.org/10.5586/asbp.3589
dc.identifier.urihttps://hdl.handle.net/20.500.12428/22961
dc.identifier.volume87
dc.identifier.wosWOS:000446447000003
dc.identifier.wosqualityQ4
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPolskie Towarzystwo Botaniczne
dc.relation.ispartofActa Societatis Botanicorum Poloniae
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/openAccess
dc.snmzKA_WoS_20250125
dc.subjectbrassinosteroids
dc.subjectPunica granatum L.
dc.subjectsex development
dc.subjectflowers
dc.titleInfluence of plant growth regulators on sex differentiation and floral characteristics of pomegranate flowers: a case of brassinosteroids
dc.typeArticle

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