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EFFECTS OF FREEZING TO 77 K (-196 DEG C) AND THAWING ON SETARIA LUTESCENS SEEDS.

Author(s) : JORDAN J. L., JORDAN L. S., JORDAN C. M.

Type of article: Article

Summary

ONE FREEZE TO 77 K FOLLOWED BY A SLOW THAW, INCREASED SEED GERMINATION FROM 40 TO 70%, BUT ADDITIONAL FREEZE-THAW CYCLES REDUCED GERMINATION TO 30%. USING A SCANNING ELECTRON MICROSCOPE, EVIDENCE WAS PRODUCED THAT SEED COAT CRACKING DID NOT CAUSE EITHER INITIAL INCREASED, OR SUBSEQUENT REDUCED GERMINATION. OBSERVATIONS WITH A TRANSMISSION ELECTRON MICROSCOPE REVEALED THAT DISRUPTION OF THE INTEGRITY OF LIPID BODIES ACCOMPANIED INCREASED DAMAGE FROM REPEATED FREEZING AT 77 K AND THAWING.

Details

  • Original title: EFFECTS OF FREEZING TO 77 K (-196 DEG C) AND THAWING ON SETARIA LUTESCENS SEEDS.
  • Record ID : 1983-0501
  • Languages: English
  • Source: Cryobiology - vol. 19 - n. 4
  • Publication date: 1982

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