Assessment of impact of climate change with reference to elevated CO2 on rice brown planthopper, Nilaparvata lugens (Stal.) and
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Title |
Assessment of impact of climate change with reference to elevated CO2 on rice brown planthopper, Nilaparvata lugens (Stal.) and
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Creator |
N. R. Prasannakumar, Subhash Chander,* and Madan Pal
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Subject |
Brown planthopper, climate change, elevated CO2, rice.
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Description |
Not Available
Impact of elevated CO2 on the rice brown planthopper (BPH), Nilaparvata lugens (Stal.) population and rice yield was assessed in open-top chambers during kharif 2010 and 2011. Brachypterous females laid more eggs (324.3 ± 112.3 eggs/female) on the rice plants exposed to elevated CO2 (570 ± 25 ppm) than 380 ppm ambient CO2 (231.7 ± 31.8 eggs). Elevated CO2 exhibited positive effect on BPH multiplication and resulted in morethan a doubling of its population (435.4 ± 62.0 hoppers/ hill) at peak incidence compared to ambient CO2 (121.4 ± 36.8 hoppers/hill) during kharif 2010; corresponding populations being 113.0 ± 11.5 and 47.0 ± 8.1 hoppers/hill during kharif 2011 respectively. Besides, honeydew excretion was observed to be 74.41% more under elevated CO2 (187.6 ± 44.8 mm2/5 females) than ambient CO2 (48 ± 20.1 mm2/5 females). On the other hand, high CO2 exhibited nutritive effect on uninfested rice crop through 21.6%, 15.3% and 14.1% increase in the number of tillers, reproductive tillers and seeds/panicle respectively, and as a consequence increased grain by 11.1% compared to ambient CO2. However, despite the nutritive effect, crop under elevated CO2 suffered higher yield loss (26.5%) due to higher BPH population as well as sucking rate compared to ambient CO2 (12.4%). Not Available |
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Date |
2024-04-24T12:20:19Z
2024-04-24T12:20:19Z 2012-01-01 |
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Type |
Research Paper
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Identifier |
Prasannakumar, N.R., Chander, S. and Pal, M. 2012. Assessment of impact of climate change with reference to elevated CO2 on rice brown planthopper, Nilaparvata lugens (Stal.) and crop yield. Current Science 103 (10): 1201-1205
Not Available http://krishi.icar.gov.in/jspui/handle/123456789/82344 |
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Language |
English
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Relation |
Not Available;
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Publisher |
Current Science
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