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Mechanism of deleyed development on young panicle in sorghum varieties

Research Project

Project/Area Number 08660016
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 作物学
Research InstitutionTottori University

Principal Investigator

NAKANO Junichi  Faculty of Agriculture, Tottori University, Associate Professor, 農学部, 助教授 (20032641)

Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1997: ¥600,000 (Direct Cost: ¥600,000)
Fiscal Year 1996: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsDaylength / Delayd heading / Interaction / Panicle initiation / Photoperiod / Sorghum / Temperature
Research Abstract

1. Greenhouse experiment were conducted to clarify the interactions of temperature and photoperiod. From the results for Ryuujinwase (photosensitive variety), the minimum duration of panicle initiation (emergence to young panicle initiation stage) was observed by 22-24゚C in long daylength (16hrs) condition.
2. The period of panicle initiation was varied with diurnal temperatur change conditions (24(]SY.+-。[)0-24(]SY.+-。[)6゚C), and there was high correlation coefficient between the duration of panicle initiation and effective accumulate temperature (critical temperature ; 22゚C).
3. From the results of short daylength treatments (12hrs ; 3,6 and 9 days) before panicle initiation time in field conditions using some varieties, the durations of BVP (basic vegitative phase) of varieties were estimated ranging from 3 to 9 days, and the durations of BVP were reduced by hifh temperature. And also, the durations of PSP (Photo sensitive phase) were estimeted ranging 3-6 days, and the durations of PSP were increased at temperature above 22-24゚C.
4. This study confirmes the necessity to divide the entire pre-initiation period into the two phases for accurate estimation model for heading time in sorghum varieties. Futher studies are needed to elucidate the phenomon in some photo-sensitive cultivars of the deleyed heating by high temperatures.

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (8 results)

All Other

All Publications (8 results)

  • [Publications] 中野 淳一: "高温・長日条件でのソルガム品種の出穂遅延について" 日本作物学会記事. 66巻. 503-504 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 中野 淳一: "日長反応の温度依存性に着目したソルガム品種の分類" 日本草地学会誌. 43巻. 62-63 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] J.Nakano, T.Yamaguchi, M.Takayanagi And T.Takigami: "Delayd heating in sorghum varieties under high temperature and lon day-length condition." Jap.Journal of Crop Science. Vol 66 (3). 503-504 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] J.Nakano, J.Uozumi, S.Kasuga and H.Nakagawa: "A New Classification Method for Sorghum Varieties with Special Reference to the Interaction between Day-length and Temperature on Photoperiodic Reaction." Glassland Science. Vol 43 (1). 62-63 (1987)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 中野 淳一: "高温・長日条件でのソルガム品種の出穂遅延について" 日本作物学会紀事. 66巻. 503-504 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 中野 淳一: "日長反応の温度依存性に着目したソルガム品種の分類" 日本草地学会誌. 43巻. 62-63 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 中野 淳一: "高温・長日条件でのソルガム品種の出穂遅延について" 日本作物学会紀事. 66巻(印刷中). (1997)

    • Related Report
      1996 Annual Research Report
  • [Publications] 中野 淳一: "日長反応の温度依存性に着目したソルガム品種の分類" 日本草地学会誌. 43巻(印刷中). (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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