Pistillate Flower Abscission in Turkish Walnut Cultivars and Its Reduction by AVG

Dublin Core

Title

Pistillate Flower Abscission in Turkish Walnut Cultivars and Its Reduction by AVG

Author

Gün, Ayse
Erdoğan, Veli
Akçay, M. Emin
Fidanci, Ayse
Tosun, İsmail

Abstract

Level of pistillate flower abscission (PFA) in Turkish walnut cultivars was investigated in this study. Emasculated and bagged female flowers were pollinated with 5%, 50% and 100% pollen concentrations at receptivity. Control flowers left for open pollination. In addition, a whole tree was sprayed with 125 ppm ethylene inhibitor AVG (amino ethoxy vinyl glycine) when anthesis reached to 5-30% and a control tree was not treated for each cultivar. Number of aborted flowers at diameter of 3-4cm was counted and percent PFA was calculated. The results showed that Turkish walnut cultivars had medium (65.4%) to high (100%) levels of PFA including the leading cultivars ‘Sebin’ and ‘Bilecik’ (94.8% and 93.4% PFA, respectively). Application of AVG reduced PFA from 82.4% to 43.6% in average and increased fruit set significantly in all cultivars except ‘Sen-1’.

Keywords

Conference or Workshop Item
PeerReviewed

Date

2010-06

Extent

326

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