The effects of different concentrations of malathion on the different growth stages of Vigna sp.

Date of Publication

1995

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Biology

College

College of Science

Department/Unit

Biology

Abstract/Summary

The effects of spraying different levels of malathion on certain morphological and chemical characteristics of the leaf of Vigna sp. (bush sitao) at different stages of growth were investigated. During the vegetative, flowering, and fruiting stages, sprayed plants exhibited greater number of leaves (units), surface area per leaf (sq. cm.), and shoot-root ratio than that of unsprayed plants. However, malathion spraying did not significantly affect these morphological parameters based on the One-way Analysis of Variance at 5 percent level of significance. On the other hand, the protein, sugar, and starch contents in the leaves were significantly affected by malathion spraying based on One-way ANOVA. The unsprayed plants had the highest leaf protein (ug/mg leaf sample), and sugar (percent leaf dry weight) contents while the starch content (percent leaf dry weight) was lower than that of the sprayed plants. Leaf sugar content in the sprayed plants increased together with the malathion concentration while leaf starch resulted otherwise.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU06928

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

84 leaves ; Computer print-out.

Keywords

Plant physiology; Growth (Plants); Pesticides; Legumes

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