The study of tolerance to high temperature of sweet potato

2013 Fiscal Year Final Research Report

• Project/Area Number: 23780016
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Crop science/Weed science
• Research Institution: Shimane University
• Principal Investigator: KADOWAKI Masayuki 島根大学, 生物資源科学部, 准教授 (00379695)
• Project Period (FY): 2011 – 2013
• Keywords: サツマイモ / 塊根生産 / 地温 / 気温 / 植被率

Research Abstract

This study aimed to investigate the tolerance to high soil temperature of sweet potato using twenty cultivars. They were evaluated at three levels of soil temperature under field condition. The coefficient of variation of commercial yield of tuberous root at three levels of soil temperature was used as the indicator of tolerance to high soil temperature. There were the varietal differences in the coefficient of variation. Soil temperature and the coefficient of variation of commercial yield decreased linearly with increasing canopy coverage in early growth stage. The translocation of assimilate to tuberous root decreased. These results suggested that the high canopy coverage in early growth stage was essential for stable tuberous root production under the high temperature.

Research Products

• [Presentation] Trends of sweet potato in Japan -cultivation, breeding and use-. The scientific report about the technology of purple sweet potato variety breeding and cultivation and the trend of new product development of sweet potato and other potatoes. (2013)
  • Author(s): Masayuki Kadowaki
  • Place of Presentation: Zhejiang Academy of Agricultural Sciences
  • Year and Date: 2013-11-18
• [Presentation] サツマイモの塊根生産における植被率と地温との関係 (2013)
  • Author(s): 門脇正行・鎌田晃輔・永見拓朗・西原由香・十倉宏幸・林司直・安田登
  • Organizer: 日本作物学会第236回講演会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2013-09-11
• [Presentation] サツマイモにおける地温反応性の品種間差異とその要因に関する一考察 (2012)
  • Author(s): 門脇正行・十倉宏幸・林司直・沖本和也・大木詩子・安田登
  • Organizer: 農業生産技術管理学会平成24年度大会
  • Place of Presentation: 鹿児島大学
  • Year and Date: 2012-10-28
• [Presentation] サツマイモにおける高地温耐性品種の検討 (2012)
  • Author(s): 門脇正行・十倉宏幸・林司直・沖本和也・大木詩子・安田登
  • Organizer: 日本作物学会第234回講演会
  • Place of Presentation: 東北大学
  • Year and Date: 2012-09-11
• [Presentation] 地温がサツマイモ塊根の収量および外観品質に及ぼす影響とその品種間差異 (2011)
  • Author(s): 門脇正行・沖本和也・藤原剛・山口浩司・河原克明・大木詩子・安田登
  • Organizer: 日本作物学会第232回講演会
  • Place of Presentation: 山口大学
  • Year and Date: 2011-09-02
• [Remarks] 「神在の里」に同封するリーフレットに研究活動を記載し,PRを行った 島根大学芋焼酎
• [Remarks] 「サツマイモ・ダイコンを育てよう」の受講者に対し,研究施設の見学と研究内容の紹介を行った 平成25年度島根大学公開講座