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Response of Aphis craccivora Koch to elevated CO2 on Cowpea

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Title Response of Aphis craccivora Koch to elevated CO2 on Cowpea
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Creator Srinivasa Rao, M*., Padmaja PCM., Manimanjari, Rao,VUM .,Maheswari, M., Abdul Khadar, Vanaja , M andVenkateswarlu
 
Subject Aphis craccivora, elevated CO2, fecundity, MRGR, leaf nitrogen, C:N ratio
 
Description Not Available
Changes in climate and weather could profoundly affect the population dynamics and status of insect pests of
crops. Aphids are ubiquitous insect herbivores whose behavior could be influenced by climate change. We
studied the impact of elevated CO2 (eCO2) on Aphis craccivora Koch on cowpea (Vigna unguiculata L.).
Cowpea plants were grown under ambient (380 ppm) and elevated (550 and 700 ppm) CO2 conditions in open
top chambers (OTCs). Feeding trials were conducted using ‘cut leaf’ technique and the aphids were cultured
individually in the laboratory. Results showed that the host plant and aphid species were significantly and
positively influenced by eCO2. The mean fecundity (number of nymphs per day, 80%), Mean relative growth
rate (MRGR, 8%) and adult weight (22%) of aphids increased but the longevity (5 %) and development time
(5%) decreased significantly at eCO2 conditions over ambient CO2. Bio chemical analysis of cowpea foliage
indicated an increased C:N ratio (8%) and decreased nitrogen content (7%) and non-significant variation of
carbon and phenol content at eCO2 conditions.
Not Available
 
Date 2021-08-25T04:48:05Z
2021-08-25T04:48:05Z
2013
 
Type Research Paper
 
Identifier 15, Special Issue (1). 51-56.
Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/60463
 
Language English
 
Relation Not Available;
 
Publisher Journal of Agrometeorology