Journal of Plant Physiology & Pathology ISSN: 2329-955X

Research Article, J Plant Physiol Pathol Vol: 5 Issue: 4

Impact of eCO2 and Temperature on Aphis craccivora koch. on Groundnut and Future Pest Status During Climate Change Scenarios

Srinivasa Rao Mathukumalli*1, Shaila Ongolu1, Vennila Sengottaiyan2 and Rama Rao Anantha Chitiprolu1

1ICAR-Central Research Institute for Dryland Agriculture (CRIDA), Hyderabad-500 059, India

2ICAR-National Centre for Integrated Pest Management (NCIPM), Pusa Campus, New Delhi-110012, India

*Corresponding Author : Srinivasa Rao Mathukumalli
ICAR-Central Research Institute for Dryland Agriculture (CRIDA), Hyderabad, 500 059 India
Tel: +90-40-24530161
Fax: +91-40-24531802
E-mail: [email protected]; [email protected]

Received: June 15, 2017 Accepted: August 04, 2017 Published: August 10, 2017

Citation: Mathukumalli SR, Ongolu S, Sengottaiyan S, Chitiprolu RRA (2017) Impact of eCO2 and Temperature on Aphis craccivora koch. on Groundnut and Future Pest Status During Climate Change Scenarios. J Plant Physiol Pathol 5:4. doi: 10.4172/2329-955X.1000171

Abstract

Impact of eCO2 and Temperature on Aphis craccivora koch. on Groundnut and Future Pest Status During Climate Change Scenarios

Studies were conducted to quantify the direct effects of temperature and indirect effect of elevated CO2 (eCO2), on Aphis craccivora Koch. on groundnut (Arachis hypogaea L.). The mean development time (DT) of nymph was significantly reduced by 1-2 days from 20 to 35°C temperature at eCO2 over ambient CO2 (aCO2) conditions. Increased production of offspring was noticed at eCO2. The thermal requirement of nymph varied from 74-102 DD on eCO2 with temperature in the range of 20-30°C as against 90-130 DD on aCO2. Non-linear mostly quadriatic relationship of lifetable parameters rm, Ro, T and λ varied with temperature and CO2 and found to have nonlinear relationship. Prediction of pest scenarios based on PRECIS A1B emission scenario data at eleven groundnut cultivating locations of India during near (NF) and distant future (DF) periods showed that increase of ‘rm’ and ‘λ’ with varied ‘Ro’ and reduced ‘T’. Similar trends were reflected in three decadal periods of NF also. The present results indicate that incidence of A. craccivora is likely to be higher in the future climate change periods.

Keywords: Aphids; Development time; Thermal constant; Life table parameters; Climate change; Pest status

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