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Evaluation of certain rainfed food and oil seed crops for their response to elevated CO2 at vegetative stage

Author

Listed:
  • M. Vanaja

    (Central Research Institute for Dryland Agriculture, Santhoshnagar, Hyderdabad, India)

  • P. Vagheera

    (Central Research Institute for Dryland Agriculture, Santhoshnagar, Hyderdabad, India)

  • P. Ratnakumar

    (Central Research Institute for Dryland Agriculture, Santhoshnagar, Hyderdabad, India)

  • N. Jyothi Lakshmi

    (Central Research Institute for Dryland Agriculture, Santhoshnagar, Hyderdabad, India)

  • P. Raghuram Reddy

    (Central Research Institute for Dryland Agriculture, Santhoshnagar, Hyderdabad, India)

  • S.K. Yadav

    (Central Research Institute for Dryland Agriculture, Santhoshnagar, Hyderdabad, India)

  • M. Maheswari

    (Central Research Institute for Dryland Agriculture, Santhoshnagar, Hyderdabad, India)

  • B. Venkateswarlu

    (Central Research Institute for Dryland Agriculture, Santhoshnagar, Hyderdabad, India)

Abstract

A study was conducted with two important rainfed food crops viz., sorghum (Sorghum bicolor L. Moench.) and blackgram (Vigna mungo L. Happer) and two oil seed crops viz., sunflower (Helianthus annuus L.) and groundnut (Arachis hypogaea L.) under two conditions viz., elevated CO2 (600 ppm) and ambient CO2 (365 ppm) in open top chambers (OTCs). The observations were recorded at the vegetative stage at 7, 14, 21 and 30 days after sowing (DAS). The results showed significant differences between crops, conditions and time intervals, as well as the single and double order interactions for all the characters studied viz., total dry weight, stem dry weight, root dry weight, leaf dry weight, shoot length, root length and leaf area. Total dry weight and its components viz., stem dry weight, root dry weight and leaf dry weight along with leaf area showed a significant increase under enhanced CO2 conditions. Among the four crops studied the overall results showed the highest response to elevated CO2 by blackgram while the lowest response by sorghum.

Suggested Citation

  • M. Vanaja & P. Vagheera & P. Ratnakumar & N. Jyothi Lakshmi & P. Raghuram Reddy & S.K. Yadav & M. Maheswari & B. Venkateswarlu, 2006. "Evaluation of certain rainfed food and oil seed crops for their response to elevated CO2 at vegetative stage," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 52(4), pages 164-170.
    • Handle: RePEc:caa:jnlpse:v:52:y:2006:i:4:id:3361-pse
    DOI: 10.17221/3361-PSE
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    Citations

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    Cited by:

    1. M. Vanaja & P. Ratnakumar & P. Vagheera & M. Jyothi & P. Raghuram Reddy & N. Jyothi Lakshmi & M. Maheshwari & S.K. Yadav, 2006. "Initial growth responses of blackgram (Vigna mungo L. Hepper) under elevated CO2and moisture stress," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 52(11), pages 499-504.
    2. M. Vanaja & P. Raghuram Reddy & N. Jyothi Lakshmi & M. Maheswari & P. Vagheera & P. Ratnakumar & M. Jyothi & S.K. Yadav & B. Venkateswarlu, 2007. "Effect of elevated atmospheric CO2 concentrations on growth and yield of blackgram (Vigna mungo L. Hepper) - a rainfed pulse crop," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 53(2), pages 81-88.
    3. M. Vanaja & M. Jyothi & P. Ratnakumar & P. Vagheera & P. Raghuram Reddy & N. Jyothi Lakshmi & S.K. Yadav & M. Maheshwari & B. Venkateswarlu, 2008. "Growth and yield responses of castor bean (Ricinus communis L.) at two enhanced CO2 levels," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 54(1), pages 38-46.
    4. M. Vanaja & P.R. Ram Reddy & N.J. Lakshmi & S.K. Abdul Razak & P. Vagheera & G. Archana & S.K. Yadav & M. Maheswari & B. Venkateswarlu, 2010. "Response of seed yield and its components of red gram (Cajanus cajan L. Millsp.) to elevated CO2," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 56(10), pages 458-462.

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