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Methane oxidation enhancement of rice roots with stimulus to its shoots

Author

Listed:
  • B. Zhao

    (Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou, P.R. China
    Key Laboratory of Ecological Agriculture of Ministry of Agriculture of the People's Republic of China, Guangzhou, P.R. China
    Key Laboratory of Agro-ecology and Rural Environment of Guangdong Regular Higher Education Institutions, Guangzhou, P.R. China)

  • J. Zhang

    (Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou, P.R. China
    Key Laboratory of Ecological Agriculture of Ministry of Agriculture of the People's Republic of China, Guangzhou, P.R. China
    Key Laboratory of Agro-ecology and Rural Environment of Guangdong Regular Higher Education Institutions, Guangzhou, P.R. China)

  • X. Lv

    (Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou, P.R. China)

  • L. Peng

    (Institute of Tropical and Subtropical Ecology, South China Agricultural University, Guangzhou, P.R. China)

  • H. Padilla

    (Kadoorie Farm and Botanic Garden, Hongkong, P.R. China)

Abstract

This study aimed to know whether the methane oxidation of rice roots was enhanced when rice shoots was stimulated. Stimulus was applied using a mechanical device which continuously touched the rice shoots with strength of 5, 30 and 60 min/day. In 5 min/day and 30 min/day stimuli treatments, methane oxidation rates of rice roots at 6 h were both significantly improved. Rice height was decreased significantly in 30 min/day stimuli treatment. Root biomass and root activities were significantly improved in 5 min/day and 30 min/day stimuli treatments. Length, surface area and volume of rice roots in 30 min/day stimuli treatment were improved significantly. Stomata areas were found to be significantly higher in 30 min/day and 60 min/day stimuli treatments. Continuous stimuli of 5 min/day and 30 min/day on rice shoots led to methane oxidation capacity enhancement of rice roots and response of rice at the physiological and morphological level. This study ascertained the importance of biological activity in paddy fields on the methane release process.

Suggested Citation

  • B. Zhao & J. Zhang & X. Lv & L. Peng & H. Padilla, 2013. "Methane oxidation enhancement of rice roots with stimulus to its shoots," Plant, Soil and Environment, Czech Academy of Agricultural Sciences, vol. 59(4), pages 143-149.
    • Handle: RePEc:caa:jnlpse:v:59:y:2013:i:4:id:530-2012-pse
    DOI: 10.17221/530/2012-PSE
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