PREFERENCE, MORTALITY AND FERTILITY OF Acanthoscelides obtectus (SAY) IN SIX LINES OF COMMON BEAN AND THE JAMAPA CULTIVAR

Abstract

Acanthoscelides obtectus is an important stored grains pest; thus there is the need to select bean genotypes (Phaseolus vulgaris L.) resistant to this insect attack, in order to reduce its damage. The objective of this work was to determine the Acanthoscelides obtectus larvae preference to penetrate seeds of six bean lines (CPG-0040, CPG-0065, CPG-0100, CPG-0116, CPG-0117, and CPG-0131) and to test the resistance of three of those lines (CPG-0065, CPG-0100, and CPG-0131) to the insect attack. Free election and life and fertility tables techniques were used for preference and resistance studies, respectively. The less preferred lines were CPG-0100 and CPG-0131. The most resistant was CPG0131, statistically equal to Jamapa cultivar, which was used as the resistant control.