Characterization of a diverse set of maize germplasm for resistance to infection by Aspergillus flavus and accumulation of aflatoxin
Abstract
140 words
Sources of resistance to A. flavus have been identified
elsewhere but no such materials are currently available for use
by the maize improvement program in Uganda. The goal of
this study was to initiate breeding for resistance to the fungus
by identifying maize inbred lines, testers and hybrids that show
high resistance to Aspergillus flavus and field accumulation
of aflatoxin through: (1) screening inbred lines, testers and
hybrids for resistance, (2) determining general and specific
combining ability associated with resistance and determining
the relationship between traits associated with resistance.
Results indicated a highly significant variation (P<0.001) in
resistance among inbred lines and testers. Testcrosses also
showed significant variability (P<0.05). Inbred lines showed a
significant GCA for kernel infection rate while testers showed
significant GCA for severity of infection (P<0.05). SCA for
both kernel infection rate and severity was non significant.
Subjects
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