The ontogeny of B-D- Mannanase in the mutant (Makapuno) and normal coconut endosperms.

Date

6-1985

Degree

Bachelor of Science in Biology

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Dolores A. Ramirez

Abstract

The activity of B-D-mannanase was investigated in the two nut types' endosperms to determine the role of the enzyme in the production of the tumor-like growth in the makapuno. the normal nut's B-D-mannanase activity showed a significant decrease from the first to the second stage of endosperm development followed by a slight. Neverthelwss constant reduction all the way to maturity. In contrast, the activity of the enzyme in the makapuno coconut remained consistently higher, ranging from 0.217 to 0.130, from the second stage of the fifth. It plunged only at the sixth stage where the value observed was 0.008. It was noted that the levels of enzyme activity followed the trends in galactomannan and was held to be indicative of the polysaccharide's degradation and metabolism. The suggestion was put forward that such system also serves to facilitate mannan deposition and storage in the worked nut. The possible contribution of difficiency B-Dmannanase activities in the two nut types to the production of tumor-like growth in the makapuno was discussed.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Document Type

Thesis

This document is currently not available here.

Share

COinS