Early detection of graft incompatibility in apricot (Prunus armeniaca L.) using phenol analyses |
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Authors: | V. Usenik,B. Kr&scaron ka,M. Vičan,F. &Scaron tampar |
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Affiliation: | 1. University of Ljubljana, Biotechnical Faculty, Agronomy Department, Chair for Fruit Growing, Jamnikarjeva 101, 1000 Ljubljana, Slovenia;2. Mendel University of Agriculture and Forestry Brno, Faculty of Horticulture Lednice, Valticka 337, 691 44 Lednice na Moravě, Chech Republic |
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Abstract: | The study investigated the role of phenols in apricot graft incompatibility. Assays of phloem with cambium from 1-year-old apricot trees of cultivars Marlen, Leskora and Betinka which were grafted on the rootstocks of different genetic origin: M-LE-1, Lesiberian, MY-KL-A, Tetra, Penta, Green Gage, Julior, MRS 2/5 and Isthara were analysed with HPLC (together 23 scion/stock combinations). The phloroglucinol, catechin, p-coumaric acid and further non-identified phenols with the retention time 23–25 and 30 min were determined. The content of individual phenol compounds was related to specific cultivar/rootstock combination. The minimum number of statistical significant differences in the phenol content between tissues above and below graft union was established in homospecific combinations (P. armeniaca/P. armeniaca). Cultivars Marlen, Leskora and Betinka differ in the degree of compatibility or incompatibility with rootstocks. The pattern of non-identified phenol 23 in different graft combinations is similar to catechin and p-coumaric acid. |
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Keywords: | Apricot Prunus armeniaca Prunus Graft Incompatibility Phenolic compounds |
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