The Effect of Acetic Acid Treatments on the Quality of Stored Carrot (Daucus carota L.) Seeds

Hanna Dorna,Agnieszka Rosińska,Dorota Szopińska

doi:10.3390/agronomy11061176

Hanna Dorna, Agnieszka Rosińska + Show 1 more

Open Access

https://doi.org/10.3390/agronomy11061176

Copy DOI

Abstract

Alternaria dauci (J.G. Kühn) J.W. Groves et Skolko and A. radicina Meier, Drechsler et E.D. Eddy are important seed-transmitted pathogens of carrot. The aim of this study was to evaluate the effects of acetic acid treatments on the quality of stored carrot seeds. Seeds of two samples were soaked for 30 min in 0.5, 1 and 2% acetic acid. Controls included untreated seeds, seeds soaked in distilled water and seeds treated with fungicide Zaprawa Nasienna T 75 WS/DS (a.i. thiram 75%). Germination, vigour and health of untreated and treated seeds were evaluated before and after 5 and 12 months of storage at 4 and 20 °C. Seeds of both samples treated with 0.5 and 1% acetic acid were characterized by higher germination capacity after storage than untreated seeds. However, treatments with 1 and 2% acetic acid negatively affected seed vigour. Generally, seeds of both samples treated with acetic acid were characterized by lower infestation with A. alternata and A. radicina after storage than untreated seeds and seeds soaked in distilled water. Moreover, acetic acid often controlled these fungi more effectively than the fungicide. Regardless of the storage duration, infestation with fungi was higher if seeds of both samples were stored at a lower temperature.

Highlights

Eddy are important seed-transmitted pathogens of carrot
The fungicides, such as thiram, chlorothalonil and iprodione, have been used to control Alternaria spp. on carrot seeds, their effectiveness seems to be insufficient in the case of highly infested lots, especially if the pathogen is located in the inner tissues of the seeds [2]
The improvement of germination capacity was observed only if seeds were treated with fungicide and 0.5% acetic acid solution

Summary

Introduction

Eddy are important seed-transmitted pathogens of carrot. The aim of this study was to evaluate the effects of acetic acid treatments on the quality of stored carrot seeds. Treatments with 1 and 2% acetic acid negatively affected seed vigour Seeds of both samples treated with acetic acid were characterized by lower infestation with A. alternata and A. radicina after storage than untreated seeds and seeds soaked in distilled water. Alternaria alternata (Fr.) Keissl., another Alternaria species commonly associated with seeds of many plants as a saprotroph, is considered by some researchers as a weak pathogen of carrot [1] The fungicides, such as thiram, chlorothalonil and iprodione, have been used to control Alternaria spp. on carrot seeds, their effectiveness seems to be insufficient in the case of highly infested lots, especially if the pathogen is located in the inner tissues of the seeds [2]. Publisher’s Note: MDPI stays neutral with regard to jurisdictional claims in published maps and institutional affiliations

Objectives

Methods

Results

Discussion

Conclusion