Effects of Elevated CO2 on Floral Sterility of Rice Plants Caused by Low Temperature

• OKADA Masumi

  National Agricultural Research Center for Tohoku Region

• SHIMONO Hiroyuki

  National Agricultural Research Center for Tohoku Region

• YAMAKAWA Yasuhiro

  National Agricultural Research Center for Tohoku Region

• INOUE Meguru

  National Agricultural Research Center for Tohoku Region

• KOBAYASHI Kazuhiko

  Graduate School of Agricultural and Life Sciences, The University of Tokyo

書誌事項

タイトル別名

• Effects of Elevated CO₂ on Floral Sterility of Rice Plants Caused by Low Temperature

抄録

To evaluate the effects of elevated CO₂ concentration on low-temperature induced sterility, we conducted chamber and FACE (Free-Air CO₂ Enrichment) experiments under two levels of CO₂ concentration; ambient and elevated (ambient + 200ppmV). In the chamber experiment for three rice seasons from 2001 through 2003, rice (Oryza sativa L., cv. Sasanishiki) plants were submerged up to 25 cm above the soil surface in a water pool. The young panicles near the soil surface were thus subjected to a critical temperature of 19.5 ℃ throughout the susceptible period from panicle initiation to anthesis. The effects of elevated CO₂ on floral sterility were inconsistent among the three years, but the relationship between the floral sterility and the total spikelet number was consistent. As the spikelet number increased, the sterility increased, whether the change was caused by CO₂ or nitrogen. Similar results were obtained in the FACE experiment in 2003, when summer temperatures were extremely low. The earliest cultivar Kirara397 increased in spikelet number under elevated CO₂ but decreased in yield due to floral sterility. These results suggest that elevated CO₂ concentration may increase floral sterility under low temperature indirectly via the increase in spikelet number.

収録刊行物

• 農業気象

  農業気象 60 (5), 589-592, 2005

  日本農業気象学会

キーワード

• Cold summer damage
• Elevated CO₂
• Floral sterility
• Low temperature
• Rice

詳細情報

• CRID: 1390282679645707776
• NII論文ID: 130006847552
• NII論文ID: 40015149448
• NII書誌ID: AA11530034
• DOI: 10.2480/agrmet.589
• ISSN: 18810136
• ISSN: 00218588
• NDL書誌ID: 8540700
• Web Site: http://id.ndl.go.jp/bib/8540700
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8540700
• Web Site: https://www.jstage.jst.go.jp/article/agrmet/60/5/60_589/_pdf
• 本文言語コード: en
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
  • KAKEN
• 抄録ライセンスフラグ: 使用不可