Impact of Elevated CO2 and Temperature on Brown Planthopper Population in Rice EcosystemReport as inadecuate




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Proceedings of the National Academy of Sciences, India Section B: Biological Sciences

pp 1–8

First Online: 19 April 2016Received: 14 May 2015Revised: 08 November 2015Accepted: 23 February 2016DOI: 10.1007-s40011-016-0727-x

Cite this article as: Guru Pirasanna Pandi, G., Chander, S., Singh, M.P. et al. Proc. Natl. Acad. Sci., India, Sect. B Biol. Sci. 2016. doi:10.1007-s40011-016-0727-x

Abstract

Influence of elevated CO2 570 ± 25 ppm and elevated temperature ≃3 °C higher than ambient on rice Oryzasativa L. and brown planthopper BPH, Nilaparvata lugens Stal. was studied in open top chambers during rainy season of 2013. Elevated CO2 and temperature exhibited positive effect on BPH multiplication thus enhancing its population 55.2 ± 5.7 hoppers-hill in comparison to ambient CO2 and temperature 25.5 ± 2.1 hoppers-hill. Elevated CO2 + temperature significantly reduced the adult longevity and nymphal duration by 17.4 and 18.5 % respectively, however elevated conditions increased BPH fecundity by 29.5 %. In rice crop, interactive effect of elevated CO2 and temperature led to an increase in the number of tillers 20.1 % and canopy circumference 30.4 %, but resulted in a decrease of reproductive tillers 10.8 %, seeds-panicle 10.9 % and 1000-seed weight 8.6 % thereby reducing grain yield 9.8 %. Moreover, positive effect of increased CO2 concentration and temperature on BPH population exacerbates the damage 30.6 which in turn coupled with the plant traits to hampering production.

KeywordsBasmati rice Brown planthopper Climate change Elevated CO2 High temperature  Download fulltext PDF



Author: G. Guru Pirasanna Pandi - Subhash Chander - Madan Pal Singh - Himanshu Pathak

Source: https://link.springer.com/







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