"Response of Scirpus maritimus L. and Pistia stratiotes L. to salt -stress."

Date

10-1977

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Bonifacio T. Mercado

Abstract

The lowland weed species, namely Scirpus maritimus L. and Pistia stratiotes L. were grown in soil and culture solution in increasing levels of NaC1 to determine the growth response of these weed species to salinity. Growth of Pistia in terms of offshoot production decreased at 0.1% and at higher concentrations of the salt. Growth of Scirpus in terms of shoot height, shoot production, tuber weight, fresh and dry weights increased in 0.1 and 0.2% NaC1, the plant surviving even at a con-centration as high as 1% NaCl. Increasing NaC1 concentration increased the OP, sodium and chloride content of leaf sheath and leaf blade of Scirpus. The OP of Pistia increased with increasing NaC1 levels but at much lower values. The content of the tissues with respect to sodium and chloride ions was much higher in Scirpus than in Pistia. The mechanism by which Scirpus, the salt-tolerant species, adjusts osmotically to the saline condition is discussed.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Document Type

Thesis

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