Physiological descriptors for salt stress susceptibility in Mangifera mango plant genetic resources

Ulrich Schmutz, Peter Luedders

Research output: Contribution to journalArticle

Abstract

This paper describes an attempt to gain more detailed stress susceptibility descriptors under controlled environment conditions. Two different Mangifera species (M. indica cv. 13-1 and M. zeylanica) were characterized in an environment-simulation laboratory. During increasing levels of NaCl salinity (15 to 60 mM) physiological description data (CO2 assimilation, root respiration, carbon gain) were simultaneously recorded over a period of one month. At the end of the experiment mineral composition was measured in various plant parts. At 60 mM NaCl the average CO2 assimilation rate (Aav) was 7.9 µmol m-2s-1 in M. zeylanica, whereas it was only 2.8 µmol m-2s-1 in M. indica 13-1. Root respiration was increased more in M. zeylanica. M. zeylanica had lower Na+ and Cl- contents in leaves but higher K+ contents in roots and higher Ca2+ and Mg2+ contents in leaves, compared with M. indica 13-1. There were also higher K+/Na+ ratios in all plant parts, especially in roots of M. zeylanica. From this data it was concluded that the M. zeylanica type examined may have a relatively higher saline tolerance than M. indica 13-1.
Original languageEnglish
Pages (from-to)7-11
Number of pages5
JournalPlant Genetic Resources Newsletter
Volume188
Publication statusPublished - 1 Jan 1999

Bibliographical note

Published by FAO (Food and Agricultural Organisation of the United Nations and IPGRI (International Plant Genetic Resources Institute). Rome, Italy

Keywords

  • mango
  • Salt stress
  • physiological characterization
  • Root respiration
  • Carbon gain

Fingerprint Dive into the research topics of 'Physiological descriptors for salt stress susceptibility in Mangifera mango plant genetic resources'. Together they form a unique fingerprint.

Cite this