Phytoalexin basis of resistance to Cercospora leaf spot in peanut (Arachis hypogaea L.)

Date

3-1988

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Dolores A. Ramirez

Abstract

Phytoalexin production in peanut (Arachis hypogaga L.) before and after inoculation with Cercospora arachidicola was analyzed in two resistant varieties (NcAc 16940 and NcAc 17011), one susceptible variety (RLRS 1) and their resistant x susceptible Fl hybrids. Comparisons made between inoculated and uninoculated leaf samples by thin-layer chromatography with benzene: methanol (9:1 v/v) as solvent showed that the number of bands increased by two to five after inoculation. Compounds having the same DPNA reaction and approximately the same Rf value were observed. two (compound 41 and compound 44) of which are present on both resistant varieties only and another two (compound 33 and 37) present in all the tested parentals only. Compounds 24, 50, and 51 were observed to be present in all the tested varieties

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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