<abstract xmlns="http://www.w3.org/1999/xhtml">

The codling moth [<italic>Cydia pomonella</italic> L. (Lepidoptera: Tortricidae)] is the main pest in most apple orchards in Syria. It causes billions of dollars in loss of fruit crops every year. The present work examined the effects of gamma radiation and <italic>Bacillus thuringiensis</italic> (BT) on F1 progeny of <italic>C. pomonella.</italic> The experimental design was based on two factors, namely F1 offspring produced by males irradiated at a dose of 150 Gy, and artificial diet of BT-treated larvae. The first offspring of unirradiated and irradiated <italic>C. pomonella</italic> males, F1, were from parents treated with a commercial formulation of <italic>Bacillus thuringiensis</italic> BT (Dipel® 2X). F1 progeny of unirradiated was significantly less susceptible to BT than that of irradiated parents. The results showed high mortality in F1 progeny of <italic>C. pomonella</italic> when gamma radiation and BT were applied together. The LC50 in F1 progeny was 2.5 ppm for irradiated parents, while it was 13 ppm for unirradiated ones. A significant reduction in the fecundity and egg hatchability of F1 progeny of irradiated parents compared to unirradiated ones was observed. This study demonstrated that for F1 progeny the combination between Inherited Sterility Technique and BT can be useful to achieve an integrated pest management program of codling moth.
</abstract>

The codling moth [Cydia pomonella L. (Lepidoptera: Tortricidae)] is the main pest in most apple orchards in Syria. It causes billions of dollars in loss of fruit crops every year. The present work examined the effects of gamma radiation and Bacillus thuringiensis (BT) on F1 progeny of C. pomonella. The experimental design was based on two factors, namely F1 offspring produced by males irradiated at a dose of 150 Gy, and artificial diet of BT-treated larvae. The first offspring of unirradiated and irradiated C. pomonella males, F1, were from parents treated with a commercial formulation of Bacillus thuringiensis BT (Dipel® 2X). F1 progeny of unirradiated was significantly less susceptible to BT than that of irradiated parents. The results showed high mortality in F1 progeny of C. pomonella when gamma radiation and BT were applied together. The LC50 in F1 progeny was 2.5 ppm for irradiated parents, while it was 13 ppm for unirradiated ones. A significant reduction in the fecundity and egg hatchability of F1 progeny of irradiated parents compared to unirradiated ones was observed. This study demonstrated that for F1 progeny the combination between Inherited Sterility Technique and BT can be useful to achieve an integrated pest management program of codling moth.

Effects of gamma radiation and <italic>Bacillus thuringiensis</italic> on F1 progeny of <italic>Cydia pomonella</italic>

Department of Molecular Biology and Biotechnology

Hellenic Plant Protection Journal

This work is licensed under the Creative Commons Attribution 4.0 International License.

Effects of gamma radiation and  on F progeny of 

The codling moth [Cydia pomonella L. (Lepidoptera: Tortricidae)] is the main pest in most apple orchards in Syria. It causes billions of dollars in loss of...

Effects of gamma radiation and Bacillus thuringiensis on F₁ progeny of Cydia pomonella

Published Online: Jul 20, 2021

Page range: 99 - 107

Received: Sep 23, 2020

Accepted: Jun 30, 2021

DOI: https://doi.org/10.2478/hppj-2021-0010

Keywords
Bacillus thuringiensis, biocontrol, Cydia pomonella, radiation

© 2020 I. Idris et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Effects of gamma radiation and Bacillus thuringiensis on F1 progeny of Cydia pomonella

Published Online: Jul 20, 2021

Page range: 99 - 107

Received: Sep 23, 2020

Accepted: Jun 30, 2021

DOI: https://doi.org/10.2478/hppj-2021-0010

KeywordsBacillus thuringiensis, biocontrol, Cydia pomonella, radiation

© 2020 I. Idris et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Effects of gamma radiation and Bacillus thuringiensis on F₁ progeny of Cydia pomonella

Keywords
Bacillus thuringiensis, biocontrol, Cydia pomonella, radiation