Effect of Freezing Stress on Electrolyte Leakage of Fennel Foeniculum vulgare

پژوهشهای زراعی ایران

Article 3, Volume 8, Issue 4 - Serial Number 18, September and October 2010, Pages 587-593   

Document Type: Research Article

DOI: 10.22067/gsc.v8i4.7951

Authors

A Nezami^* ; G Azizi; A Siahmarguee; A Mohammadabadi

Faculty of Agriculture, Ferdowsi University of Mashhad

Abstract

Abstract
In order to investigation of the effect of freezing stress on electrolyte leakage of two fennel landraces that grown on the field, a factorial experiment based on completely randomized design was conducted with three replications in Agricultural College, Ferdowsi University of Mashhad in 2004. Treatments were two fennel landraces (Khorasan and Kerman), two planting dates and six temperatures (0,-3,-6,-9,-12,-15°C). Seedlings were selected in 4-6 leaf stage from the field and transferred to the laboratory and different organs of seedlings (root, leaf and crown) were investigated for cytoplasmice membrane stability. Results indicated that electrolyte leakage percent of fennel landraces and those organs significantly affected by lowering temperature. LT50 in Kerman landrace was lower then Khorasan landrace and LT50 of second planting date was lower then first planting date in two landraces, and LT50 of crown was the lowest. According to the importance of the effect of cold injury on fennel, additional investigations are requested.

Keywords: Planting dates, Landrace, Membrane stability, LT50