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- Title
Growth behaviour of Azolla pinnata at various salinity levels and induction of high salt tolerance
- Authors
Rai, V.; Rai, A. K.
- Abstract
Azolla pinnata is an extremely NaCl-sensitive plant and cannot tolerate an external NaCl concentration beyond 30 mM. Preincubation of plants in 20 mM NaCl for 18 days, followed by stepwise transfer (10 mM NaCl per day) made them able to grow at an otherwise lethal NaCl concentration of 60 mM at rates comparable to the growth of unadapted plants in 20 mM NaCl. Plants, not preincubated in 20 mM NaCl or preincubated for a duration shorter than 18 days were unable to survive and did not grow in 60 mM external NaCl. Na+, K+ and Ca2+ concentrations inthe control, NaCl-stressed and adapted plants differed significantlyindicating that adaptation involved the development of a capability in the plants to regulate ion concentration.
- Subjects
CROP yields; SOIL salinity; BOTANY; AZOLLA pinnata; AGRICULTURE; PLANT development
- Publication
Plant & Soil, 1998, Vol 206, Issue 1, p79
- ISSN
0032-079X
- Publication type
Article
- DOI
10.1023/A:1004340005693