Determination of ABA and GA3 contents during the seedling growth periods of some avocado rootstocks

• Published in: Anadolu tarım bilimleri dergisi (Online) Vol. 30; no. 1; p. 7
• Main Authors: Bayram, Süleyman, Askin, Mehmet Atilla
• Format: Journal Article
• Language: Turkish
• Published: Samsun Ondokuz Mayis University (OMU), Ziraat Fakultesi Kurupelit 01-02-2015
• Subjects: Agricultural production; Fruits; Plant biology; Plant growth
• ISSN: 1308-8750; 1308-8769

Avocado cultivation has increased rapidly since the mid-1980s, in the Mediterranean coastline places such as Alanya, Gazipasa and Anamur in Turkey. In our country, internal hormonal levels during the growing periods of seedling rootstocks used as propagating material in the avocado tree nurseries haven't been revealed yet. This project aimed to determine internal hormonal contents (ABA and GA3 levels) in the development of seedling to form the basis of plant growth regulator applications. It was studied on seedlings of the commercial varieties such as Bacon, Fuerte, Hass and Zutano along with Topa Topa and Mexicola used as a source of the seedling rootstocks. Therefore, the fruits of the varieties to be used as rootstock were harvested at two different times and seeds of these fruits were planted at two different times. During periods of seedling development, gibberellic acid (GA3) and abscisic acid (ABA) amounts were analyzed. As a result of this study; abscisic acid and gibberellin amounts of seedlings were found to be associated with each other generally depending on varieties. During seedling development between the months of January and June, both ABA and GA3 contents reduced. The cause of the decline between January and June in ABA and GA3 values is thought to be a result of the ongoing development of seedlings with the climatic effects.