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CHANGES IN CYTOPLASMIC AND VACUOLAR PH IN HARVESTED LETTUCE TISSUE AS INFLUENCED BY CO2.

Author(s) : SIRIPHANICH J., KADER A. A.

Type of article: Article

Summary

CLIMAX LETTUCE (LACTUCA SATIVA L) EXHIBITED MORE SEVERE CO2 INJURY SYMPTOMS THAN < SALINAS > AND < WINTERHAVEN > LETTUCE WHEN EXPOSED AT 293 K (20 DEG C) TO AIR FOR 1 DAY FOLLOWING TREATMENT FOR 6 DAYS AT 273 K (0 DEG C) WITH 15% CO2 IN AIR. VARIATION IN THE BUFFERING CAPACITY WAS NOT RELATED TO DIFFERENCES IN SUSCEPTIBILITY TO CO2 INJURY AMONG THESE CULTIVARS. ALTHOUGH CO2 REDUCED PH, IT ALSO REDUCED TITRATABLE ACIDITY OF LETTUCE TISSUE. THIS CHANGE RESULTED IN A HIGHER PH WHEN THE LETTUCE WAS MOVED TO AIR. EXPOSURE AT 273 K TO LIGHT REDUCED CO2 INJURY BY ABOUT 50% RELATIVE TO TISSUE KEPT IN THE DARK.

Details

  • Original title: CHANGES IN CYTOPLASMIC AND VACUOLAR PH IN HARVESTED LETTUCE TISSUE AS INFLUENCED BY CO2.
  • Record ID : 1986-1943
  • Languages: English
  • Source: J. am. Soc. hortic. Sci. - vol. 111 - n. 1
  • Publication date: 1986/01
  • Document available for consultation in the library of the IIR headquarters only.

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