FATTY ACID COMPOSITION OF PLASMALEMMA LIPIDS ASSOCIATED WITH GENETIC VARIABILITY IN COLD TOLERANCE OF SWEETPOTATO IPOMOEA BATATAS. (L). LAM

in HortScience
View More View Less
  • 1 Department of Plant and Soil Sciences, Mississippi State University, MS 39762

Storage roots of `Beauregard' and `Centennial' were used to identify varietal differences in fatty acid composition in plasmalemma lipids during storage conditions. Total plasmalemma fatty acid composition of glycolipids and phospholipids in storage roots of `Beauregard' and `Centennial' did not differ. The fatty acid composition of MGDG and DGDG in storage root plasmalemma was >50% unsaturated fatty acids in `Beauregard'. The high percentage of 18:2 (65.44%) fatty acid compared to `Centennial' (19.70%) and 79.35% total unsaturated fatty acid content in MGDG may contribute to low temperature tolerance in `Beauregard'. The higher percentages of 16:1 and 22:1 fatty acids in `Centennial' compared to `Beauregard' contributed to MGDG fatty acid unsaturation. However, these fatty acids have not been related to chilling tolerance.

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 39 10 3
PDF Downloads 74 31 2