Cold Induced Changes On Sugar Contents And Respiratory Enzyme Activities In Coffee.pdf

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Preview of Cold induced changes on sugar contents and respiratory enzyme activities in coffee
🔗 Source: scielo.br
📊 Size: 130 KB
📄 Pages: 6 pages
⬇️ Downloads: 166

Summary

Researchers studied the effects of cold temperatures on coffee genotypes, specifically Coffea canephora (clones 02 and 153) and C. arabica (Catucaí IPR 102), to understand the mechanisms involved in cold tolerance. One-year-old plants were subjected to a temperature decrease from 25/20°C to 13/8°C, followed by a three-day chilling cycle at 13/4°C and a 14-day recovery period at 25/20°C. The results showed that Catucaí, which is less cold-sensitive than clone 02, had increased activity in respiratory enzymes malate dehydrogenase and pyruvate kinase, as well as significant increases in soluble sugars (sucrose, glucose, fructose, raffinose, arabinose, and mannitol) that are involved in osmoregulation and membrane stabilization. The analysis of respiratory enzymes and soluble sugar balance may provide valuable information about cold acclimation/tolerance mechanisms, contributing to the selection and breeding of Coffea sp. genotypes.

Description

Researchers studied the effects of cold temperatures on coffee genotypes, specifically Coffea canephora (clones 02 and 153) and C.

Technical Information

  • File Format: PDF
  • File Size: 130 KB
  • Pages: 6
  • Language: EN
  • Total Downloads: 166
  • Last Updated: 3 weeks ago

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