Chinese Science Bulletin

, Volume 58, Issue 15, pp 1787–1794 | Cite as

Effects of elevated [CO2] on stem and root lodging among rice cultivars

  • ChunWu Zhu
  • WeiGuo Cheng
  • Hidemitsu Sakai
  • Shimpei Oikawa
  • Rebecca C. Laza
  • Yasuhiro Usui
  • Toshihiro HasegawaEmail author
Open Access
Article Environmental Science


Studies showed that elevated [CO2] would improve photosynthetic rates and enhance yields of rice; however, few studies have focused on the response of rice lodging, which is a major cause of cereal yield loss and quality reduction, under elevated [CO2]. In this study, we examined the effects of elevated [CO2] on stem and root lodging using 4 rice cultivars (86Y8, japonica hybrid; LYP9, 2-line indica hybrid; variety 9311, type of indica inbred rice, and SY63, 3-line indica hybrid) grown under two [CO2] levels: 400 and 680 μmol mol−1. Our results indicated that under elevated [CO2], the stem-lodging risk (SLR) of 9311 decreased, while in SY63 the SLR increased, 86Y8 and LYP9 were not significantly affected; the risk of root lodging was reduced for all cultivars, because root biomass (instead of root number) and bending strength were increased significantly, and then the increase of anti-lodging ability is far higher than that of self-weight mass moment for all cultivars. These findings suggested that higher [CO2] can enhance the risk of stem-lodging for cultivars with strong-[CO2]-responses, but may not aggravate the root lodging for all rice cultivars.


climate change cultivars lodging rice 


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Copyright information

© The Author(s) 2013

Authors and Affiliations

  • ChunWu Zhu
    • 1
  • WeiGuo Cheng
    • 2
  • Hidemitsu Sakai
    • 1
  • Shimpei Oikawa
    • 3
  • Rebecca C. Laza
    • 4
  • Yasuhiro Usui
    • 1
  • Toshihiro Hasegawa
    • 1
    Email author
  1. 1.National Institute for Agro-Environmental SciencesIbarakiJapan
  2. 2.Faculty of AgricultureYamagata UniversityYamagataJapan
  3. 3.Faculty of International Agriculture and Food StudiesTokyo University of AgricultureTokyoJapan
  4. 4.Crop and Environmental Sciences DivisionInternational Rice Research InstituteMetro ManilaPhilippines

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