Abstract

The aim of this study was to examine the effects of different neonicotinoid seed treatments on viability and vigour of maize (Zea mays L.) inbred lines. The trial included three maize inbred lines (207 x 312/5 DNS, 7-1 NS, and 312/5 DNS) treated with recommended doses of three commercial formulations of systemic insecticides (Poncho 600-FS, Gaucho 600-FS, and Cruiser 350-FS). Generally, formulation Gaucho 600-FS can be considered the most harmful regarding the impact on the reduction of germination in all tested maize inbred lines. A significant reduction of germination in maize inbred line 7-1 NS was observed after seed treatment with Cruiser 350-FS, using the standard germination test and cold test. A significant increase in seedlings root and shoot growth of maize inbred line 312/5 DNS treated with Poncho 600-FS and Cruiser 350-FS was noted using the cold test.

Highlights

  • The results obtained in this study showed that maize inbred line 207 x 312/5 DNS had a high germination rate in the standard germination test (Table 1)

  • No significant differences in shoot and root length of seedlings were observed using the standard germination test, and shoot length of seedlings using cold test (Table 2)

  • The results obtained in the cold test showed no significant differences in germination and abnormal seedlings of maize inbred line 312/5 DNS treated with the tested formulation compared to control (p>0.05)

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Summary

Introduction

The results obtained in this study showed that maize inbred line 207 x 312/5 DNS had a high germination rate in the standard germination test (Table 1). Unfavourable conditions of the accelerated ageing test and treatment with clothianidin led to a significant decrease in germination precentageof inbred line 207 x 312/5 DNS, the percentage of abnormal seedlings (0.00%) was significantly lower (p

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