and P.L. maize stalk and ear rot strains in northeast china. In field screening, Margala, NRL-4, EV-1097 showed maximum resistance followed by moderately resistant SP-3, NCML-73, NC-2703, NRL-6 and Local-Y maize genotypes. Bacterial stalk rot of maize caused by Dickeya zeae previously known as E. chrysanthemi pv. Disease prevalence (DP) was calculated on the basis of presence or absence of disease at each visited site. should thus focus strongly on reducing fungal contamination of maize and the detoxification of grain with focus on using regionally adapted maize varieties. Crop Protection Genetic analysis of resistance to post flowering stalk rot in tropical germplasm of... Biodiversity of Fusarium species in ears and stalks of maize plants in Belgium. The analysis of the trials under MSR, showed significant difference for GCA, SCA, GCA × environment (p < 0.01), and hybrid × environment (p < 0.05) while SCA × environment was non-significant. The aim was to determine the occurrence and impact of different Fusarium species in order to assess the potential risk of mycotoxin contamination. cropping factors in order to provide advice for growers on how to avoid high mycotoxin loads. Surveyed areas of different areas of Central and South Punjab, Pakistan. Post Flowering Stalk Rot Complex of Maize - Present Status and Future Prospects The disease is more prevalent in rainy season in India. INTRODUCTION pathogens have been reported to cause stalk rot of Maize is the third largest planted crop after wheat and rice in the world (USDA 2014). : Allgemeine, landwirtschaftliche und technische Mikrobiologie, By clicking accept or continuing to use the site, you agree to the terms outlined in our. Six isolates were identified asFusarium thapsinum on morphological and microscopic features. First Report of Bacterial Stalk Rot of Maize Caused by Dickeya zeae in Mexico. zeae have economic importance of reduced crop yield up to 98.8%. From each site data were collected from three fields well apart from each other. of 23 different Fusarium species identified to occur on ears and stalks. The disease severity index of seedlings inoculated with stalk isolates was slightly higher than that of seedlings inoculated with isolates from infected ears, whereas the pathogenicity of the stalk and ear isolates were identical. zeaehave economic importance of reduced crop yield up to 98.8%. Screening of maize germs plas. A phylogenic tree of translation elongation factor (EF-la) sequences designated the 40 isolates as F. graminearum sensu stricto (67.5%) and F. boothii (32.5%). Access scientific knowledge from anywhere. Post flowering stalk rot (PFSR) is one of the major biotic constraints to maize production in tropical and subtropical environments. All rights reserved. In this study, Fusarium spp. Surveys of 8 districts of Central Punjab, Pakistan namely Sialkot, Narowal, Gujranwal, Hafizabad, Shekhupura, (Butler & Khan) Gams were found associated with maize plants infected with, Table 1.Surveyed areas of different areas of Central and South P. Fusarium verticillioides is most frequently associated with maize in South Africa. Figure 2. Host range: D. zeae bacteria have a wide host range. Bradbury (1986) reported that E. chrysanthemi is caus-al agent of soft rot disease on wide range of plant spe-cies in tropical, subtropical and temperate region of the Investigation on pathogens associated with potato rot and role of PGPR Bacteria in disease Management. A set of maize inbred lines was evaluated at two locations for Fusarium stalk rot (FSR) and Macrophomina stalk rot (MSR). Maize is a socioeconomically important crop in many countries. We investigated the genetic diversity and pathogenicity of 40 FGSC isolates obtained from stalk and ear rot samples collected from 42 locations in northeastern China during 2013 and 2014. DISTRIBUTION OF STALK ROT OF MAIZE IN PUNJ, among the factors responsible for variation in disease with respect to, Different letters show significant difference at, and South Punjab with variable intensities. Pingali (2007). However, the isolates from the two different diseases could not be distinguished in pathogenicity. Maize crop showed highly susceptible reaction to the disease at western belts of Dang and susceptible reaction was marked in … Studies on certain aspects of chemical control of bacterial stalk rot disease of maize. All figure content in this area was uploaded by Muhammad Riaz, All content in this area was uploaded by Muhammad Riaz on Jan 01, 2020, DISTRIBUTION OF STALK ROT OF MAIZE IN PUNJAB, PAKISTAN, Institute of Agricultural Sciences, University of the Punja, for year 2016-17 was 1334 thousand hectares, extensive survey to document the distribution of stalk, Disease severity index was calculated by applying following for. Bacterial stalk rot of maize caused by Dickeya zeae previously known as E. chrysanthemi pv. Historical records report Fusarium moniliforme sensu lato as the pathogen responsible for Fusarium diseases of sorghum, however recent phylogenetic analyses has separated this complex into more than 25 species.
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