The role of salinity and drought stress on the germination indices of giant reed (Arundo donax L.) in the next generation

Document Type : Research Paper

Authors

1 university of mashhad, agrotechnology department

2 Associate Professor of Agrotechnology Department, Ferdowsi University of Mashhad.

3 Professor of Agrotechnology Department, Ferdowsi University of Mashhad.

Abstract

In order to investigate the effect of environmental stress on the germination and establishment of Arundo donax reed and its roles in maintaining the survival and reproduction of this plant, two separate experiments were conducted in 1400 at Ferdowsi University of Mashhad. In the first stage, the rhizomes that were collected from the ecotype of farms around Gorgan city were tested as a factorial experiment in the form of a randomized complete block design in three replications and under salinity (0, 4, 8, and 12 dS/m) and drought (100, 75) stress treatments. and 50% of the farm capacity) was cultivated in the research farm of Ferdowsi University of Mashhad and the results showed that the application of both salinity and drought stress reduce the growth and development indicators of this plant. In the next step, the rhizomes and seeds obtained from the previous step were tested under optimal germination conditions in the laboratory of Ferdowsi University of Mashhad in the form of a randomized complete block design in 4 replications, and the results showed that the application of salt and drought stress during the growing season on the mother plant It also reduced the germination rate of the resulting rhizomes in the next generation from 76% to less than 20%. The rhizomes of mother plants that were grown in stress-free conditions had better growth rate, growth speed, and root and stem length than mother plants that were grown in stress conditions.

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