Morpho-physiological characterization of Azolla UPLB-hybrid 1 and its parents (A. microphylla 4018 and A. mexicana 2001)

Date

3-1990

Degree

Bachelor of Science in Biology

Major Course

Major in Cell Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Pacifico C. Payawal

Abstract

With the aim of determining and comparing the effects of the varying phosphorus phosphorus and pH levels, and susceptibility of fungal pathogens of Azolla UPLB hybrid I and its parents, this study was conducted. Specific parameters tested include color changes, doubling time, root length and number, chlorophyll content and heterocyst index.

Results showed that phosphorus deficiency is a big constraint to the optimum growth, reproduction and deficiency of the three Azolla strains, although each exhibited different levels of adaptation in response to the stress. The optimus concentration of P was found to be at 20 ppm in which the Azolla strains exhibited desirable characteristics for all the parameters tested. Azolla UPLB Hybris I prove to have the best mechanism for adapting to such stress, as compared with the parents.

Azolla UPLB Hybrid I was found to be susceptible to the fungal pathogens inoculated, namely, Sclerotum, sp. And Phizoctonia like isolates. The former was the most infective as compared to the low degree of infection of the Rhizoctomia-like species.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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