36 KB330 KB31 KB200220222010Kolarič, Jureštevilka:1letnik:7ISSN:1580-8432COBISSID:3283560URN:URN:NBN:SI:doc-RGD6ES5PenUniverza v Mariboru, Fakulteta za kmetijstvoAgricultura (Maribor)abscizijacvetovietilenjablanaplodičiredčenjeAbscission of young apple fruits (Malus domestica Borkh.)| a review|Abscission is a morphogenetic process, which is genetically regulated and plays several roles in plant life. Abscission of young apple (Malus domestica Borkh.) fruits is especially important to prevent alternate bearing and to improve several quality parameters of mature fruits. For the stimulation of fruitlet abscission different chemical substances can be used. Chemical substances act by prevention of pollination/fertilization (bloom thinning) or by stimulation of fruitlet drop (fruit thinning). Although the chemical thinning is a well known technological measure in fruit growing, the mode of action of different chemical thinners is still unclear. Researchers believed that chemicals can act by interfering hormonal state in plant, inhibiting assimilate production, or affect on polar auxin transport (PAT). However, until now none of these theses have been fully confirmed. Since abscission is a genetically controlled process, several experiments were designed to identify genes related to abscission in the last years. Until now groups of genes related to ethylene biosynthesis, to auxin efflux/influx carriers, to carbohydrate metabolism and to hydrolytic enzymes were identified. All mentioned genes are differently down- or up-regulated during the abscisssion process and to clarify the role of these genes in abscission more experiments have to be designedTEXTznanstveno časopisjejournalsSlovenian National E-content AggregatorNational and University Library of SloveniaUniverza v Mariboru, Fakulteta za kmetijstvo