Mapping QTL conferring resistance in maize to gray leaf spot disease caused by Cercospora zeina.

ABSTRACT:

Background

Gray leaf spot (GLS) is a globally important foliar disease of maize. Cercospora zeina, one of the two fungal species that cause the disease, is prevalent in southern Africa, China, Brazil and the eastern corn belt of the USA. Identification of QTL for GLS resistance in subtropical germplasm is important to support breeding programmes in developing countries where C. zeina limits production of this staple food crop.

Results

A maize RIL population (F7:S6) from a cross between CML444 and SC Malawi was field-tested under GLS disease pressure at five field sites over three seasons in KwaZulu-Natal, South Africa. Thirty QTL identified from eleven field trials (environments) were consolidated to seven QTL for GLS resistance based on their expression in at least two envi

SUBMITTER: Berger DK 

PROVIDER: S-EPMC4059882 | biostudies-literature | 2014 May

REPOSITORIES: biostudies-literature