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https://doi.org/10.37358/Rev.Chim.1949

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Revista de Chimie (Rev. Chim.), Year 2016, Volume 67, Issue 12,





ANA HONIGES, VASILE SIRBU, DANIELA RAHOTA, CATALINA MIHAELA LUCA, ANNAMARIA PALLAG
Biochemical Study of Helianthus Annuus L. Exudate, Related to Orobanche Cumana Wallr. Germination Inhibitors

Abstract:

For biochemists and breeders, increasing Helianthus annuus L. (sunflower) resistance against the root holoparastic angiosperm Orobanche cumana Wallr., remains a challenge, considering that the damage caused by this parasite is still significant in many countries of Eurasia. Resistance factors, such as Orobanche seed germination inhibitors, have been studied in root exudates of different sunflower lines. Instrumental analyses of root exudates show the presence of germination inhibitor benzoic acid. Substances from the cinamic acid family, ferulic acid family, cumaric acid family known as Orobanche seed germination inhibitors, were not found. The germination inhibiting effect of benzoic acid through Orobanche seed germination tests, under standardized laboratory conditions, is already known. Keywords: sunflower, Orobanche cumana, germination inhibitors, instrumental analysis, root exudates, benzoic acid


Issue: 2016, Volume 67, Issue 12
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