Resistance of early maturity maize genotypes to southern corn leaf blight

Analysis of quantitative trait Loci for resistance to southern leaf blight in juvenile maize.

ABSTRACT A set of 192 maize recombinant inbred lines (RILs), derived from a cross between the inbred lines Mo17 and B73, were evaluated as 3-week-old seedlings in the greenhouse for resistance to southern leaf blight, caused by Cochliobolus heterostrophus race O. Six significant (LOD >3.1) quantitative trait loci (QTL) were identified for disease resistance, located on chromosomes 1, 2, 3, 6, 7...

Helminthosporium: Secondary Metabolites, Southern Leaf Blight of Corn, and Biology

The recent outbreak of the southern corn blight is caused by race T of fIel1l1intlzosporiulIl lIlaydis, a species in the fungus genus Hel1l1intlzosporiU1I1 which consists of about 175 species, worldwide in distribution, on grasses. Three species of HellllintlzosporiulIl-H. lIlaydis, H. turciculIl, and H. carbonUIIl-attack corn and are placed in the genus Bipolaris. The southern corn blight fung...

Trichoderma uiride Isolated from Southern Leaf Blight-Infected Corn

During 1970. field corn produced in southern and midwestern United States was heavily infected with Helminthosporium maydis )iisikado and :v1iyake race T. the causative agent of southern corn leaf blight. The main secondary im'aders of the blighted corn were Trichoderma. Fusarium. and A.lternaria i.J. .J. Ellis. personal communication J. Several toxic compounds have been isolated from Trichoder...

Reactions of Open-Pollinated Sweet Corn Cultivars to Stewart’s Wilt, Common Rust, Northern Leaf Blight, and Southern Leaf Blight

The first commercially successful F1 hybrid sweet corn, Golden Cross Bantam, was released by Smith in the early 1930s (17). Today, over 600 sweet corn hybrids are available commercially in the United States and thousands of new hybrids are developed and evaluated each year. These hybrids display a wide range of phenotypic reactions to prevalent diseases (9), indicating a considerable amount of ...

OCCURRENCE OF NORTHERN LEAF BLIGHT, Phaeosphaeria LEAF SPOT , SOUTHERN LEAF BLIGHT, RUST AND MAIZE STREAK VIRUS IN KENYA