Ideotype of rice under global warming from a view point of pollination ecology

• Project/Area Number: 25660015
• Research Category: Grant-in-Aid for Challenging Exploratory Research
• Allocation Type: Multi-year Fund
• Research Field: Crop production science
• Research Institution: Gifu University
• Principal Investigator: MATSUI Tsutomu 岐阜大学, 応用生物科学部, 教授 (70238939)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2014: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2013: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000)
• Keywords: 受粉 / 稔実 / 風速 / 穂の深さ / イネ / 高温不稔 / 穂の位置 / 高温耐性 / 不稔 / 葯の裂開

Outline of Final Research Achievements

The relationship between depth of florets in foliage, meteorological factors, pollination and seed setting were examined with a model experiment in which flowering rice grown in the 4L pots were set in canopy at different heights. There was an optimum height of florets in the view seed set percentages. Under low wind condition below 0.5 meter per second made the pollination unstable. Variation of pollination under the different depths was well explained by wind velocity around the florets, but did not completely correspond to seed sets.

Research Products

• [Journal Article] QTL mapping of dehiscence length at the basal part of thecae related to heat tolerance of rice（Oryza sativa L.） (2016)
  • Author(s): Ling Zhao, Chun-Fang Zhao, Li-Hui Zhou, Jing Lin, Qing-Yong Zhao, Zhen Zhu, Tao Chen, Toshihiro Hasegawa, Tsutomu Matsui, Cai-Lin Wang.
  • Journal Title: Euphytica Volume: 未定
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] QTL analyses for anther length and dehiscence at flowering as traits for the tolerance of extreme temperatures in rice (Oryza sativa L.). (2015)
  • Author(s): Tazib,T., Kobayashi, Y., Koyama, H., Matsui, T.
  • Journal Title: Euphytica Volume: 203 Issue: 3 Pages: 629-642
  • DOI: 10.1007/s10681-014-1291-1
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Lower-than-expected floret sterility of rice under extremely hot conditions in a flood- irrigated field in New South Wales, Australia (2014)
  • Author(s): Tsutomu Matsui, Kazuhiro Kobayasi, Hiroshi Nakagawa, Mayumi Yoshimoto, Toshihiro Hasegawad, Russell Reinke, John Angus
  • Journal Title: Plant Production Science Volume: 17
  • NAID: 130004678263
  • Peer Reviewed
• [Presentation] Identification of quantitative trait locus for anther dehiscence at the basal part under heat stress at flowering in rice (Oryza sativa L.) (2014)
  • Author(s): Tanveer Tazib, Matsunaga Makoto, Matsumoto Yushi, Tsutomu Matsui
  • Organizer: 日本作物学会
  • Place of Presentation: 千葉大学
• [Presentation] QTL analyses of longitudinal anther dehiscence at flowering in rice (Oryza saliva L.) (2013)
  • Author(s): Tanveer Tazib, Tsutomu Matsui, Shouta Yamada
  • Organizer: 日本作物学会
  • Place of Presentation: 鹿児島大学