Thermal Situation of Plant Reproductive Organs Affected by Gravity and Light Intensity

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Abstract

Temperature increases in plant reproductive organs could cause fertility impediments and thus produce sterile seeds under artificial lighting conditions without adequately controlled environments in closed plant growth facilities. The thermal situation of the plant reproductive organs as affected by gravity levels of 0.01 and 1.0g for 20seconds each during parabolic airplane flights was determined under different light intensities in order to make an estimation of temperature increases in the reporoductive organs under microgravity in space. Thermal images of reproductive organs of rice, wheat and tomato were captured using infrared thermography. Temperatures of glumes of rice and wheat and anthers of tomato increased by 1.1, 0.7 and 0.4°C, respectively, over 20 seconds as gravity decreased from 1.0 to 0.01g at an irradiance of 150W-2. Restricted free air convection under microgravity conditions in space would cause the aberration of the reproductive growth of plants by retarding heat exchanges between the reproductive organs and the ambient air.

Journal

  • Journal of The Japan Society of Microgravity Application

    Journal of The Japan Society of Microgravity Application 24(4), 325-329, 2007-10-30

    The Japan Society of Microgravity Application

References:  22

Cited by:  1

Codes

  • NII Article ID (NAID)
    10020006546
  • NII NACSIS-CAT ID (NCID)
    AN10537663
  • Text Lang
    ENG
  • Article Type
    Journal Article
  • ISSN
    09153616
  • NDL Article ID
    9300872
  • NDL Source Classification
    ZM33(科学技術--宇宙科学) // ZM17(科学技術--科学技術一般--力学・応用力学)
  • NDL Call No.
    Z15-621
  • Data Source
    CJP  CJPref  NDL  J-STAGE 
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